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Electrical Center Identification Views

Fig 1: View Of Fuse Block - Underhood Label
GM2293849Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - UNDERHOOD - FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 ABS MTR Fuse 50A Electronic Brake Control Module (EBCM)
2 ABS MDL Fuse 40A Electronic Brake Control Module (EBCM)
3 RT STOP/TRN TRLR Fuse 15A Trailer Connector
4 SPARE Fuse 10A Not Used
5 SPARE Fuse 10A Not Used
6 FCSM IGN Fuse 10A Fuel Pump Flow Control Module (LMF)
7 BCM-5 Fuse 10A Body Control Module
8 BCM-7 Fuse 10A Body Control Module
9 BCM-4 Fuse 10A Body Control Module
10 IPC Fuse 10A Instrument Panel Cluster (IPC)
11 TRLR WRG Fuse 30A Blunt Cut (UY7)
12 SPARE Fuse 10A Not Used
13 BRK SW Fuse 10A Stop Lamp Switch
14 WASH Fuse 15A Windshield Washer Fluid Pump
15 RUN/CRNK Relay - AIRBAG, BRK SW, ECM IGN/GLOW PLUG MDL IGN, FCSM IGN (LMF), IPC, STR/WHL/SNSR (JL4), TCM IGN and TRANS Fuses
16 HORN Fuse 20A Horn Assembly
17 TRANS Fuse 15A Automatic Transmission
18 A/C CMPRSR Fuse 15A A/C Compressor Clutch (C60)
19 ECM BATT Fuse 10A Engine Control Module (ECM) (L20, LMF or L96)
20 SPARE Fuse 10A Not Used
21 LT STOP/TRN TRLR Fuse 15A Trailer Connector
22 SPARE Fuse 10A Not Used
23 SPARE Fuse 15A Not Used
24 FUEL PUMP Fuse 30A Fuel Pump and Sender Assembly (LU3, L20 or L96)
20A Fuel Pump (LMM or LGH)
25 AUX PWR OUTLET Fuse 20A Accessory Power Outlet - Center Console 2
26 BCM-3 Fuse 10A Body Control Module
27 SEO Fuse 10A Instrument Panel Cluster (IPC) (8S8)
28 AIRBAG Fuse 10A Inflatable Restraint I/P Module Disable Switch (C99) or Inflatable Restraint I/P Module Indicator (without C99) and Inflatable Restraint Sensing and Diagnostic Module (SDM)
29 STR/WHL/SNSR Fuse 10A Steering Wheel Speed/Position Sensor (JL4)
30 ECM IGN/GLOW PLUG MDL IGN Fuse 15A Engine Control Module (ECM) (LU3, L20, LMF or L96) or Glow Plug Control Module (GPCM) (LMM or LGH)
31 TCM IGN Fuse 15A Transmission Control Module (TCM)
32 TCM BATT Fuse 10A Control Solenoid Valve Assembly (MYD) or Transmission Control Module (TCM) (M30)
33 SPARE Fuse 15A Not Used
34 SPARE Fuse 15A Not Used
35 FOH MDL Fuse 15A Coolant Heater (LMM with K08)
36 FCSM BATT Fuse 20A Fuel Pump Flow Control Module (LMF)
37 SPARE Relay - Not Used
38 FUEL PUMP Relay - FUEL PUMP Fuse (except LMF)
39 CRNK Starter Relay - STRTR SOL Fuse
40 A/C CMPRSR Relay - A/C CMPRSR Fuse
41 SPARE Fuse 20A Not Used
42 TRLR WRG Fuse 30A Trailer Connector (UY7)
43 FAN HI Fuse 40A Not Used
44 STRTR SOL Fuse 40A Starter Motor
45 ECM PWR/TRN Fuse 30A Engine Control Module (ECM) (LMM or LGH)
46 SPARE Fuse 30A Not Used
47 FAN LO Fuse 40A Not Used
48 FAN HI Relay - Not Used
49 PWR/TRN Powertrain Relay - ECM PWR/TRN, EVEN IGN/INJ (L20, LMF or L96), FAN CLTCH (EV) (LMM or LGH), FUEL HTR (LMM or LGH), MAF/CNSTR VENT, O2 SNSR 1 (PRE)/CLS (L20, LMF or L96), O2 SNSR 2 (POST) (L20, LMF or L96), ODD IGN/INJ (L20, LMF or L96) and V6 FUEL INJ (LU3) Fuses
50 FAN CLTCH (EV) Relay - Engine Cooling Fan (LMM or LGH)
51 LT HI BEAM Fuse 10A Headlamp - Left High Beam (Composite) or Headlamp - Left (Sealed)
52 RT HI BEAM Fuse 10A Headlamp - Right High Beam (Composite) or Headlamp - Right (Sealed)
53 LT LO BEAM Fuse 10A Headlamp - Left Low Beam (Composite) or Headlamp - Left (Sealed)
54 RT LO BEAM Fuse 10A Headlamp - Right Low Beam (Composite) or Headlamp - Right (Sealed)
55 WPR Fuse 25A WPR PCB Relay
56 CNSTR VENT SOL Fuse 10A Evaporative Emission (EVAP) Canister Vent Solenoid Valve (LU3, L20, LMF or L96)
57 FAN LO Relay - Not Used
58 BCM-2 Fuse 10A Body Control Module
59 BCM-1 Fuse 10A Body Control Module
60 FAN CNTRL Relay - Not Used
61 SPARE Fuse 15A Not Used
62 O2 SNSR 2 (POST) Fuse 10A HO2S Bank 1 Sensor 2 (LU3, L20, LMF or L96) and HO2S Bank 2 Sensor 2 (LU3, L20, LMF or L96)
63 FAN CLTCH (EV) Fuse 10A FAN CLTCH (EV) Relay (LMM or LGH)
64 MAF/CNSTR VENT Fuse 15A Evaporative Emission (EVAP) Canister Purge Solenoid Valve (LU3, L20, LMF or L96) and Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
65 ODD IGN/INJ Fuse 20A Ignition Control Module (LU3), Odd Fuel Injectors (L20, LMF or L96) and Odd Ignition Coils (L20, LMF or L96)
66 DRL2 (LOLVL-V22) Fuse 10A Headlamp - Left (Sealed) and LT LO BEAM Fuse
67 DRL 1 (LOLVL-V22) Fuse 15A Headlamp - Left Low Beam (Composite) and LT LO BEAM Fuse
68 AUX STOP LAMP(S) Fuse 15A X405 (Cutaway)
69 SPARE Fuse 10A Not Used
70 SPARE Fuse - Not Used
71 FUEL HTR Fuse 15A Fuel Heater (LMM or LGH)
72 BCM-6 Fuse 10A Body Control Module
73 LTR/DLC Fuse 20A Accessory Power Outlet - Center Console 1 (without DT4) or Cigar Lighter (DT4) and Data Link Connector (DLC)
74 FRT BLWR Fuse 40A Blower Motor Resistor
75 V6 FUEL INJ Fuse 15A Fuel Injectors (LU3)
76 SPARE Fuse 10A Not Used
77 O2 SNSR 1 (PRE)/CLS Fuse 10A HO2S Bank 1 Sensor 1 (LU3, L20, LMF or L96) and HO2S Bank 2 Sensor 1 (LU3, L20, LMF or L96)
78 ECM PWR/TRN Fuse 10A Engine Control Module (ECM)
79 EVEN IGN/INJ Fuse 20A Even Fuel Injector (L20, LMF or L96) and Even Ignition Coils (L20, LMF or L96)
IMPORTANT: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
K3 WPR HI PCB Wiper Relay - Windshield Wiper Motor
K5 HORN/WASH PCB Relay - HORN and WASH Fuses
K6 LO BEAM PCB Relay - LT LO BEAM and RT LO BEAM Fuses
K7 HI BEAM PCB Relay - LT HI BEAM and RT HI BEAM Fuses
K9 TRLR LT STOP/TRN PCB Relay - LT STOP/TRN TRLR Fuse (UY7)
K11 STOP LAMP(S) PCB Relay - AUX STOP LAMP(S) Fuse
K13 WPR PCB Wiper Relay - Windshield Wiper Motor and WPR HI PCB Relay
K18 TRLR RT STOP/TRN PCB Relay - RT STOP/TRN TRLR Fuse (UY7)
K19 DRL PCB Relay - DRL 1 (LOLVL-V22) and DRL2 (LOLVL-V22) Fuses
Fig 2: Identifying Fuse Block - Underhood Top View
GM2293871Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Fuse Block - Underhood Bottom View
GM2293873Courtesy of GENERAL MOTORS CORP.
Fig 4: View Of Fuse Block - Underhood X1 Connector End View
GM1665659Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X1

Pin Wire Circuit Function
A1 0.5 RD/WH 440 Battery Positive Voltage (LU3, L20, LMF or L96)
1 RD/WH 440 Battery Positive Voltage (LMM or LGH)
A2 0.35 RD/WH 1840 Battery Positive Voltage
A3-A8 - - Not Used
B1 - - Not Used
B2 0.5 D-GN 59 A/C Compressor Clutch Supply Voltage (C60)
B3 - - Not Used
B4 0.8 D-GN 29 Horn Control
B5 0.5 PK 439 Ignition Voltage
0.5 PK 439 Ignition Voltage (LMM)
C1 - - Not Used
C2 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control (Gas with C60)
0.5 D-GN/WH 459 A/C Compressor Clutch Relay Control (Diesel with C60)
C3-C5 - - Not Used
C6 0.35 YE/BK 625 Starter Enable Relay Control (LU3, L20, LMF or L96)
0.5 YE/BK 625 Starter Enable Relay Control (LMM or LGH)
C7 1 BK 1250 Ground
C8 0.35 D-GN/WH 465 Fuel Pump Relay Control - Primary (L20, LMF or L96)
0.5 D-GN/WH 465 Fuel Pump Relay Control - Primary (LMM or LGH)
D1 - - Not Used
D2 0.8 PK 3039 Ignition Voltage
D3 0.5 PK 2139 Ignition Voltage
D4-D5 - - Not Used
E1 5 PU 6 Starter Solenoid Crank Voltage
E2 - - Not Used
F1 5 PK 1439 Ignition Voltage (LMM or LGH)
F2 5 RD/BK 542 Battery Positive Voltage
G1 1 PK 1039 Ignition Voltage (L20, LMF or L96)
0.8 PK 1039 Ignition Voltage (LU3)
G2 0.8 PK 1039 Ignition Voltage (L20, LMF or L96)
0.8 PK 1039 Ignition Voltage (L20, LMF or L96)
G3 0.8 PK 1039 Ignition Voltage (L20, LMF or L96)
0.8 PK 1039 Ignition Voltage (L20, LMF or L96)
G4 0.5 PK 1939 Ignition Voltage
G5 0.5 PK 1939 Ignition Voltage (LU3, L20, LMF or L96)
H1 0.5 WH/BK 2366 Cooling Fan Clutch Control (LMM or LGH)
H2 0.5 PK 1339 Ignition Voltage
H3-H8 - - Not Used
J1 1 PK 1239 Ignition Voltage (L20, LMF or L96)
J2 0.8 PK 1239 Ignition Voltage (L20, LMF or L96)
0.8 PK 1239 Ignition Voltage (L20, LMF or L96)
J3 0.8 PK 1239 Ignition Voltage (L20, LMF or L96)
0.8 PK 1239 Ignition Voltage (L20, LMF or L96)
J4 0.5 PK 1839 Ignition Voltage (LU3)
J5 - - Not Used
K1 0.8 PK 539 Ignition Voltage (LU3, L20, LMF or L96)
0.8 PK 539 Ignition Voltage (L20, LMF or L96)
K2 0.5 WH 2368 Cooling Fan Clutch Control (LMM or LGH)
K3 0.5 PK 439 Ignition Voltage (LMM or LGH)
K4 0.8 PK 1539 Ignition Voltage (LU3, L20, LMF or L96)
0.8 PK 1539 Ignition Voltage (L20, LMF or L96)
K5-K7 - - Not Used
K8 0.5 YE 5991 Powertrain Relay Control
Connector Part Information 
  • Harness: Engine
  • OEM: 15477823
  • Service: 13574911
  • Description: 56-Way F GT 150 280 Metri-Pack Series, (L-GY)
Terminal Part Information 
  • Pins: A1 (Gas), A2, C2, C6, C8, H1, H2, K2, K8
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: A1 (Diesel), C7, K1, K4
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: B4, D2, G1, G2, G3, G4 (Gas), J1, J2, J3
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B2, B5, D3, G4 (Diesel), G5, J4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: E1, F1, F2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 5: Fuse Block - Underhood C1 Connector End View
GM1665656Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X2

Pin Wire Circuit Function
A1 - - Not Used
A2 1 YE 618 Left Rear Turn Signal Lamp Control (Cutaway)
A3 0.8 D-BU/WH 149 Courtesy Lamp Control (Cutaway)
A4 1 D-GN 619 Right Rear Turn Signal Lamp Control (Cutaway)
A5-A6 - - Not Used
A7 1 BN 2109 Trailer Park Lamps Control (UY7)
A8 0.5 PK 2739 Ignition Voltage (LMF)
B1 0.8 GY 120 Fuel Pump Control (LMM or LGH)
2 GY 120 Fuel Pump Control (LU3, L20 or L96)
B2 0.8 PK 2239 Ignition Voltage (LMM or LGH)
B3 - - Not Used
B4 2 RD/WH 1740 Battery Positive Voltage (Diesel with K08)
B5 1 D-GN 1619 Trailer Right Rear Turn/Stop Lamp Control (UY7)
C1 - - Not Used
C2 3 RD/WH 1640 Battery Positive Voltage
D1 3 RD/BK 742 Battery Positive Voltage (UY7)
D2 5 RD/BK 442 Battery Positive Voltage
E1 - - Not Used
E2 1 YE 1618 Trailer Left Rear Turn/Stop Lamp Control (UY7)
E3 3 D-BU 47 Trailer Auxiliary Control (UY7)
E4 1 L-BU 1320 CHMSL Control/Stop Lamp Control (Cutaway)
E5 2 RD/WH 1940 Battery Positive Voltage (LMF)
F1 1 L-GN 1624 Trailer Backup Lamps Control (Cutaway, 8S3 or UY7)
F2 0.5 RD/WH 40 Battery Positive Voltage (LU3, L20, LMF or L96)
F3 1 BN 2109 Trailer Park Lamps Control (Cutaway)
F4-F8 - - Not Used
Connector Part Information 
  • Harness: Chassis
  • OEM: 13567518
  • Service: 19179282
  • Description: 30-Way F GT 280 M/P Series (BK)
Terminal Part Information 
  • Pins: C2, D1, D2
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: B1 (Diesel), B2, B5, E2, E4
  • Terminal/Tray: 13525970/4
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins:A2-A4, A7, F1-F3
  • Terminal/Tray: 15496302/5
  • Core/Insulation Crimp: Pin: F2 - E/A
  • Core/Insulation Crimp: Pins: A2-A4, A7, F1, F3 - 2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: B1 (Gas), B4, E3
  • Terminal/Tray: 13525969/4
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 6: Fuse Block - Underhood X3 Connector End View
GM1581655Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X3

Pin Wire Circuit Function
A1 0.35 PK 1639 Ignition Voltage
A2 0.35 RD/WH 2840 Battery Positive Voltage (8S8)
A3 0.8 RD/WH 2240 Battery Positive Voltage
A4 0.8 RD/WH 3040 Battery Positive Voltage
A5 0.5 RD/WH 2540 Battery Positive Voltage
A6 - - Not Used
A7 0.8 RD/WH 2740 Battery Positive Voltage
A8 - - Not Used
B1 3 RD/WH 3940 Battery Positive Voltage (UY7)
B2 0.35 PK 1139 Ignition Voltage
B3 0.35 PK 1139 Ignition Voltage
B4 0.8 RD/WH 1040 Battery Positive Voltage
B5 1 BN 2109 Trailer Park Lamps Control (UY7)
C1 0.35 PK 239 Ignition Voltage
C2 0.5 PK 2239 Ignition Voltage (JL4)
C3 - - Not Used
C4 0.35 OG 5186 Left Trailer Turn Signal Lamp (UY7)
C5 1 BN 2109 Trailer Park Lamps Control (Cutaway)
C6 1 D-GN 619 Right Rear Turn Signal Lamp Control (Cutaway)
C7 0.8 D-BU/WH 149 Courtesy Lamp Control (Cutaway)
C8 1 YE 618 Left Rear Turn Signal Lamp Control (Cutaway)
D1 0.5 OG 228 Windshield Washer Pump Control
D2 0.35 YE 5199 Run/Crank Relay Coil Control
D3 1 L-GN 1624 Trailer Backup Lamps Control (Cutaway, UF7 or 8S8)
D4 3 D-BU 47 Trailer Auxiliary Control (UY7)
D5 - - Not Used
E1-E2 - - Not Used
F1-F2 - - Not Used
G1 0.8 RD/WH 640 Battery Positive Voltage
G2 0.35 OG 2268 Windshield Washer Relay Control
G3 0.35 YE 5187 Right Trailer Turn Signal Lamp (UY7)
G4 2 PU 92 Windshield Wiper Motor High Speed
G5 2 D-GN 95 Windshield Washer Switch Signal
H1 - - Not Used
H2 0.5 RD/WH 3840 Battery Positive Voltage (except LU3 or LMF)
1 RD/WH 3840 Battery Positive Voltage (LU3 or LMF)
H3 0.35 TN 28 Horn Relay Control
0.35 TN 28 Horn Relay Control
H4 0.35 PK/WH 1970 Headlamp Low Beam Relay Control
H5 0.35 PU 544 Headlamp Low Beam Control
H6 0.35 GY 91 Windshield Wiper Switch Signal 2
H7 0.5 WH 5065 Stop Lamps Control
H8 0.35 TN 860 Front Windshield Wiper Switch High Signal
J1 0.8 RD/WH 640 Battery Positive Voltage
J2 0.8 RD/WH 2940 Battery Positive Voltage
J3 0.8 BN 2309 Front Park Lamps Control
J4 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control
J5 - - Not Used
K1-K2 - - Not Used
K3 0.8 RD/WH 2140 Battery Positive Voltage
K4-K6 - - Not Used
K7 0.8 L-BU/WH 1314 Left Front Turn Signal Lamp Control
K8 0.35 TN/WH 1969 Headlamp High Beam Relay Control
Connector Part Information 
  • Harness: Instrument Panel
  • OEM: 15477822
  • Service: 19115189
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: A1-A5, A7, C1-C2, C4-C8, H2-H8, K3, K7-K8
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp :Pins: A1, A2, A5, C1, C2, C4, H2, H4, H5, H6, H7, H8, K8 - E/C
  • Core/Insulation Crimp: Pins: A3, A4, A7, C5, C6, C7, C8, H3, K3, K7 - C/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: B2-B5, D1-D3, G1-G3, J1-J4
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins: B2, B3, D1, D2, G2, G3 - E/A
  • Core/Insulation Crimp: Pins: B4, B5, D3, G1, J1, J2, J3, J4 - 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: B1, D4, G4, G5
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 7: Fuse Block - Underhood X4 - Connector End View
GM823321Courtesy of GENERAL MOTORS CORP.
Fuse Block - Underhood X4

Pin Wire Circuit Function
A - - Not Used
B 0.5 BN 2309 Front Park Lamps Control
C 0.5 BN 2309 Front Park Lamps Control
D 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control
E 0.8 L-BU/WH 1314 Left Front Turn Signal Lamp Control
F 0.5 YE 712 Left Headlamp Low Beam Control (V22)
0.5 YE 712 Left Headlamp Low Beam Control (V22)
0.35 YE 712 Left Headlamp Low Beam Control (except V22)
0.35 YE 712 Left Headlamp Low Beam Control (except V22)
G - - Not Used
H - - Not Used
J - - Not Used
K 0.5 YE 712 Left Headlamp Low Beam Control (V22 without T79)
L 0.35 YE 712 Left Headlamp Low Beam Control (except V22 without T79)
M 0.8 L-GN/BK 311 Right Headlamp High Beam Control
N 0.5 D-GN/WH 711 Left Headlamp High Beam Control
P 0.35 TN/WH 312 Right Headlamp Low Beam Control (except V22)
0.5 TN/WH 312 Right Headlamp Low Beam Control (V22)
R - - Not Used
S - - Not Used
Fuse Block - Underhood X5

Terminal Part Information 
  • Harness: Battery Positive (Gas)
  • Harness: Auxiliary Battery Positive (Diesel)
  • Terminal: 15441775
  • Core/Insulation Crimp: N/A
  • Description: Ring Terminal
Fuse Block - Underhood X5

Pin Wire Circuit Function
S 19 RD 1 Battery Positive Voltage
Connector Part Information 
  • Harness: Forward Lamp
  • OEM: 15326952
  • Service: 15306426
  • Description: 16-Way F GT 280 Series (BK)
Terminal Part Information 
  • Pins: B, C, D, E, F, K, L, M, N, P
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: Pins B, C, F, K, L, N, P- E/A
  • Core/Insulation Crimp: Pins D, E, M - 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
Fig 8: View Of Fuse Block - Body Label
GM2293877Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - BODY - FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
F1 EMPTY - Not Used
F2 STR/WHL/SNSR Fuse 2A Inflatable Restraint Steering Wheel Module Coil (K34 or W1Y)
F3 AUX PRK LAMP(S) Fuse 15A X405 (Cutaway)
F4 FRT PRK LAMP(S) Fuse 10A Inflatable Restraint I/P Module Disable Switch (C99), Marker Lamp - Left Front, Marker Lamp - Right Front, Park/Turn Signal Lamp - Left and Park/Turn Signal Lamp - Right
F5 TRLR PRK LAMP(S) Fuse 15A Trailer Connector (UY7)
F6 UPFTR PRK LAMP(S) Fuse 10A X320 (YF2 or YF7)
F7 RT REAR PRK LAMP Fuse 10A Tail/Stop and Turn Signal Lamp - Right (Passenger or Cargo)
F8 LT REAR PARK LAMP Fuse 10A License Lamp (Passenger or Cargo) and Tail/Stop and Turn Signal Lamp - Left (Passenger or Cargo)
F9 OSRVM SW Fuse 5A Outside Rearview Mirror Switch (DE5 or DE7)
F10 AIRBAG/AOS Fuse 10A Inflatable Restraint Front Passenger Presence System (PPS) Sensor (Light Duty without YF7), Inflatable Restraint Sensing and Diagnostic Module(SDM) and Inflatable Restraint Vehicle Rollover Sensor (ASF)
F11 EMPTY - Not Used
F12 EMPTY - Not Used
F13 HVAC2 Fuse 10A Air Temperature Actuator, Air Temperature Actuator - Auxiliary (C69), HVAC Control Assembly (C49, DE5 or DE7), HVAC Control Assembly-Rear Auxiliary (C69 with Rear Auxiliary Controls), HVAC Control Module - Auxiliary, Blower Motor High Speed Relay - Auxiliary (C36 without C69), Blower Motor Low Speed Relay - Auxiliary (C36 without C69), Blower Motor Medium Speed Relay - Auxiliary (C36 without C69) and Mode Actuator - Auxiliary (C69)
F14 HVAC1 Fuse 20A HVAC Control Assembly and Vacuum Pump (LMM or LGH)
F15 EMPTY - Not Used
F16 UPFITTER AUX1 Fuse 50A Blunt Cut (YF1), X222 (YF2 or YF7) and X321 (YF2 or YF7)
F17 OSRVW HTR Fuse 20A Outside Rearview Mirror - Driver (DE5 or DE7) and Outside Rearview Mirror - Passenger (DE5 or DE7)
F18 REAR DEFOG Fuse 30A Rear Window Defogger Grid - Left (C49) and Rear Window Defogger Grid - Right (C49)
F19 CMPS Fuse 10A Electronic Compass Module (U80)
F20 RDO/CHIME Fuse 15A Chime Module (UL5) and Radio
F21 RFA/TPM Fuse 10A Remote Control Door Lock Receiver (RCDLR) (AU0 or UJ6)
F22 IGN SW (DLIS)/PK3 Fuse 2A Ignition Switch and Theft Deterrent Module (TDM)
F23 I/P CLUSTER Fuse 10A Instrument Panel Cluster (IPC) (except 8S8)
F24 SPARE-1 Fuse 30A Not Used
F25 HVAC CNTRL Fuse 10A HVAC Control Assembly (C49, DE5 or DE7)
F26 AUX/TRLR BCK/UP Fuse 10A Backup Alarm (8S3), Trailer Connector (UY7) and X405 (Cutaway)
F27 TAIL LAMP(S) BCK/UP Fuse 10A Backup Lamp - Left (Passenger or Cargo) and Backup Lamp - Right (Passenger or Cargo)
F28 UPFITTER AUX2 Fuse 50A Blunt Cut (YF1), X321 (YF2 or YF7) and X222 (YF2 or YF7)
READING LAMP(S) Fuse 30A Blunt Cut - Provisional Wiring (5B3)
F29 REAR BLWR Fuse 30A Blower Motor High Speed Relay - Auxiliary (C36 without C69), Blower Motor Low Speed Relay - Auxiliary (C36 without C69) and Blower Motor Medium Speed Relay - Auxiliary (C36 without C69)
F30 UPFTR CTSY LAMP(S) Fuse 15A Body Control Module (except YF7), X405 (Cutaway), Dome/Reading Lamp - Middle (Passenger), Dome Lamp (Cargo), Dome/Reading Lamp - Rear (Passenger), X320 (YF7) and Dome/Reading Lamp Front
F31 FRT DR LCK Fuse 15A Door Latch - Driver (AU3) and Door Latch - Passenger (AU3)
F32 REAR DR LCK Fuse 15A Door Latch - Cargo (Passenger or Cargo), Door Contact Plate - Left Side (E26) and Door Contact Plate - Right Side (E24 or YA2)
F33 CARGO DR UNLCK Fuse 15A Door Latch - Cargo (Passenger or Cargo with AU3)
F34 FRT PASS DR UNLCK Fuse 15A Door Latch - Passenger (AU3)
F35 REAR PASS DR UNLCK Fuse 15A Door Contact Plate - Left (E26 with AU3), Door Contact Plate - Right (Passenger or Cargo with AU3) and Fuse Block - Body
F36 DVR DR UNLCK Fuse 15A Door Latch - Driver (AU3)
F37 EMPTY - Not Used
F38 EMPTY - Not Used
CB1 PWR SEATS Circuit Breaker 30A Seat Adjuster Switch - Driver (AG1) and Seat Adjuster Switch - Passenger (AG2)
CB2 PWR WINDOW(S) Circuit Breaker 25A Window Switch - Driver (A31) and Window Switch - Passenger (A31)
K1 RUN Relay - CMPS, HVAC1 and HVAC2 Fuses and UPFTR AUX2 Relay
K2 EMPTY - Not Used
K3 PRK LAMP(S) Relay - AUX PRK LAMP(S) (Cutaway), FRT PRK LAMP(S), LT REAR PARK LAMP, RT REAR PRK LAMP, TRLR PRK LAMP(S) and UPFTR PRK LAMP(S) Fuses
K4 UPFTR AUX2 Relay - READING LAMP(S) (5B3) or UPFITTER AUX2 (YF1, YF2 or YF7) Fuses
K5 REAR DEFOG Relay - OSRVM HTR and REAR DEFOG Fuses
K6 RAP Relay - PWR WINDOW(S) Circuit Breaker (A31)
IMPORTANT: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block.
K7 BCK/UP PCB Relay - AUX/TRLR BCK/UP and TAIL LAMP(S) BCK/UP Fuses
K8 UPFTR CTSY LAMP(S) PCB Relay - UPFTR CTSY LAMP(S) Fuse
K9A FTR REAR PASS DR UNLCK PCB Relay - FRT PASS DR UNLCK and REAR PASS DR UNLCK Fuses
K9B DRVR DR UNLCK PCB Relay - DVR DR UNLCK Fuse
K10A FTR REAR DR LCK PCB Relay - FRT DR LCK and REAR DR LCK Fuses
K10B CARGO DR UNLCK PCB Relay - CARGO DR UNLCK Fuse
Fig 9: Fuse Block - Body Top View
GM2293880Courtesy of GENERAL MOTORS CORP.
Fig 10: Fuse Block - Body Bottom View
GM2293883Courtesy of GENERAL MOTORS CORP.
Fig 11: Fuse Block - Underhood X4 Connector End View
GM1665659Courtesy of GENERAL MOTORS CORP.
Fuse Block - Body X1

Pin Wire Circuit Function
A1-A3 - - Not Used
A4 0.35 YE 6817 LED Backlight Dimming Control (K34 or W1Y)
A5 0.35 D-BU 45 Park Lamp Control
A6 0.35 BN 6136 Supply Voltage (K34 or W1Y)
A7-A8 - - Not Used
B1 - - Not Used
B2 1 BN 2109 Trailer Park Lamps Control (UY7)
B3 0.35 BN 341 Ignition Voltage
B4 0.5 BN 2309 Front Park Lamps Control
0.8 BN 2309 Front Park Lamps Control (C99)
B5 1 BN 2109 Trailer Park Lamps Control (Cutaway)
C1 1 YE 618 Left Rear Turn Signal Lamp Control (Passenger or Cargo)
C2 0.35 BN/WH 230 Instrument Panel Lamps Dimming Control
C3 1 D-GN 619 Right Rear Turn Signal Lamp Control (Passenger or Cargo)
C4 0.35 WH 193 Rear Defog Relay Control (C49, DE5 or DE7)
C5 0.35 BN 341 Ignition Voltage
C6 - - Not Used
C7 0.35 OG 300 Ignition Voltage
C8 0.8 BN 141 Ignition Voltage (LMM or LGH)
D1-D4 - - Not Used
D5 1 BN 141 Ignition Voltage
E1 5 RD/BK 1042 Battery Positive Voltage (YF7)
E2 0.5 BK 350 Ground
F1 5 BN 541 Ignition Voltage (YF2 or YF7)
F2 - - Not Used
G1-G2 - - Not Used
G3 0.8 D-BU/WH 1315 Right Front Turn Signal Lamp Control (DE5 or DE7)
G4 1 RD/WH 340 Battery Positive Voltage
G5 - - Not Used
H1 0.8 L-BU/WH 1314 Left Front Turn Signal Lamp Control (DE5 or DE7)
H2 0.8 D-BU/WH 149 Courtesy Lamp Control (Cutaway)
0.8 D-BU/WH 149 Courtesy Lamp Control (except YF2 or YF7)
H3 0.35 BK/WH 351 Ground
H4 0.35 YE 43 Ignition Voltage
H5 0.8 RD/WH 4440 Battery Positive Voltage (C49, DE5 or DE7)
H6 0.35 RD/WH 2840 Battery Positive Voltage (except 8S8)
H7 0.35 RD/WH 540 Battery Positive Voltage
H8 0.5 RD/WH 5340 Battery Positive Voltage (AU0 or UJ6)
J1-J4 - - Not Used
J5 1 L-GN 1624 Trailer Backup Lamps Control (Cutaway, UY7 or 8S3)
K1 - - Not Used
K2 0.5 YE 356 Driver Door Lock Relay Unlock Control (AU3)
K3 0.5 L-BU 244 Passenger Door Lock Switch Lock Control (AU3)
K4 0.5 L-BU 244 Passenger Door Lock Switch Lock Control (AU3)
K5 0.5 YE 356 Driver Door Lock Relay Unlock Control (AU3)
0.5 YE 356 Driver Door Lock Relay Unlock Control (AU3 with PRP)
K6 - - Not Used
K7 0.5 GY/BK 690 Courtesy Lamp Control (YF2 or YF7)
K8 0.35 D-BU 38 Backup Lamp Relay Control
Connector Part Information 
  • Harness: Instrument Panel
  • OEM: 15477823
  • Service: 13574911
  • Description: 56-Way F GT 150 280 Metri-Pack Series, (L-GY)
Terminal Part Information 
  • Pins: E1, F1
  • Terminal/Tray: 7116-4122-02/10
  • Core/Insulation Crimp: D/G
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
  • Pins: A4-A6, B3, C2, C4, C5, C7, E2, K2-K5, K8, H3, H4, H6-H8
  • Terminal/Tray: 8100-4443/22
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
  • Pins: B2, B5, C1, C3, C8, D5, G3, G4, H1, H2, J5
  • Terminal/Tray: 8100-4444/22
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
  • Pins: B4, K5
  • Terminal/Tray: 8100-4445/22
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
Fig 12: Fuse Block - Body X2 Connector End View
GM1581655Courtesy of GENERAL MOTORS CORP.
Fuse Block - Body X2

Pin Wire Circuit Function
A1 0.5 RD/WH 3440 Battery Positive Voltage (Light Duty except C99 or YF7)
A2 0.5 RD/WH 3440 Battery Positive Voltage (ASF)
A3 0.5 RD/WH 3440 Battery Positive Voltage
A4 0.5 BN 2509 Left Rear Park Lamps Control (Passenger or Cargo)
A5 0.5 BN 2609 Right Rear Park Lamps Control (Passenger or Cargo)
A6 0.5 RD/WH 4340 Battery Positive Voltage (DE5 or DE7)
A7-A8 - - Not Used
B1 3 RD/WH 3540 Battery Positive Voltage (AG2)
B2 3 RD/WH 3540 Battery Positive Voltage (AG1)
B3 - - Not Used
B4 0.5 BN 2209 Rear Park Lamps Control (YF2 or YF7)
B5 - - Not Used
C1-C2 - - Not Used
C3 0.35 BN 341 Ignition Voltage (C69)
C4 0.35 BN 341 Ignition Voltage (C69, C36 or ENC)
C5 0.35 BN 341 Ignition Voltage (C49, DE5, DE7 or C60)
C6 1 D-GN 619 Right Rear Turn Signal Lamp Control (Passenger or Cargo)
C7 1 YE 618 Left Rear Turn Signal Lamp Control (Passenger or Cargo)
C8 0.35 BN/WH 230 Instrument Panel Lamps Dimming Control
D1 5 PU 293 Rear Defog Element Control (C49)
D2 5 PU 293 Rear Defog Element Control (C49)
D3 0.8 OG 2267 Mirror Heating Element Control (DE5 or DE7)
D4 0.8 OG 2267 Mirror Heating Element Control (DE5 or DE7)
D5 - - Not Used
E1 - - Not Used
E2 5 RD/BK 1042 Battery Positive Voltage (YF1, YF2 or YF7)
F1 5 RD/WH 1740 Battery Positive Voltage (C69, C36 or ENC)
F2 5 BN 541 Ignition Voltage (YF1, YF2 or YF7)
G1 3 D-GN 1001 RAP 12-Volt Fuse Control (A31)
G2 3 D-GN 1001 RAP 12-Volt Fuse Control (A31)
G3 - - Not Used
G4 1 GY 295 Door Lock Actuator Lock Control (Passenger or Cargo with AU3)
G5 1 GY 295 Door Lock Actuator Lock Control (AU3 with E26)
1 GY 295 Door Lock Actuator Lock Control (AU3 with E26 or YA2)
H1 - - Not Used
H2 0.35 BN 441 Ignition Voltage
H3 0.35 BK/WH 351 Ground
H4 - - Not Used
H5 0.5 D-BU/WH 1315 Right Front Turn Signal Lamp Control (DE5 or DE7)
H6 0.5 L-BU/WH 1314 Left Front Turn Signal Lamp Control (DE5 or DE7)
H7 0.5 D-BU/WH 149 Courtesy Lamp Control
H8 0.8 D-BU/WH 149 Courtesy Lamp Control (Passenger)
0.8 D-BU/WH 149 Courtesy Lamp Control (Passenger or Cargo except YF2 or YF7)
J1 0.8 TN 694 Driver Door Lock Actuator Unlock Control (AU3)
J2 1 TN 294 Door Lock Actuator Unlock Control (Passenger or Cargo with AU3)
J3 0.8 TN 294 Door Lock Actuator Unlock Control (AU3 with E24 or YA2)
0.8 TN 294 Door Lock Actuator Unlock Control (AU3 with E26)
J4 0.8 TN 294 Door Lock Actuator Unlock Control (AU3)
J5 1 GY 295 Door Lock Actuator Lock Control (AU3)
1 GY 295 Door Lock Actuator Lock Control (AU3)
K1-K2 - - Not Used
K3 1 TN/BK 1095 Right Rear Door Lock Actuator Unlock Control (Passenger or Cargo with AU3)
K4-K6 - - Not Used
K7 1 TN 294 Door Lock Actuator Unlock Control (Passenger or Cargo with AU3)
K8 0.8 L-GN 24 Backup Lamp Control (Passenger or Cargo)
0.8 L-GN 24 Backup Lamp Control (Passenger or Cargo)
Connector Part Information 
  • Harness: Body
  • OEM: 15477822
  • Service: 19115189
  • Description: 56-Way F GT 150 280 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: D1, D2, E2, F1, F2
  • Terminal/Tray: 7116-4122-02/10
  • Core/Insulation Crimp: D/G
  • Release Tool/Test Probe: 12094430/J-35616-42 (RD)
  • Pins: A1-A6, B4, C3-C5, C8, H2, H3, H5-H7
  • Terminal/Tray: 8100-4443/22
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
  • Pins: C6, C7, D3, D4, G4, G5, J1-J4, K7
  • Terminal/Tray: 8100-4444/22
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
  • Pins: B1, B2, G1, G2, H8, J3, J5, K8
  • Terminal/Tray: 8100-4445/22
  • Core/Insulation Crimp: Pins B1, B2, G1, G2 - F/D
  • Core/Insulation Crimp: Pins G5, H8, J3, J5, H8 - See Terminal Repair Kit
  • Release Tool/Test Probe: 15315247/J-35616-35 (VT)
Fig 13: Fuse Block - Rear (PRP) - Top View
GM828373Courtesy of GENERAL MOTORS CORP.
FUSE BLOCK - REAR (PRP) - FUSE AND RELAY IDENTIFICATION LEGEND

No. Fuse And Relay Description Rating Circuits
1 Access Panel Relay - Left Side Rear - Access Panel Latches - Left Side Rear
2 Dome Fluorescent Work Lamps Fuse 10 Dome Fluorescent Work Lamps (UF2)
3 Panel Actuator Fuse 15 Access Panel Relays
4 - - Not Used
5 Access Panel Relay - Left Side Front - Access Panel Latches - Left Side Front
6 Access Panel Relay - Right Side - Access Panel Latches - Right Side
Fig 14: Fuse Block - Rear (PRP) - Bottom View
GM828377Courtesy of GENERAL MOTORS CORP.
Fuse Block - Rear (PRP) - Bottom View

Pin Wire Circuit Function
1 OG 740 Battery Positive Voltage
2 TN 294 Access Panel Left Front Side Lock Actuators Unlock Control
3 L-BU 195 Access Panel Left Side Front Relay Control
4 - - Not Used
5 OG 740 Battery Positive Voltage
6 OG 740 Battery Positive Voltage
7 PK 1092 Access Panel Left Rear Side Lock Actuators Unlock Control
8 L-GN 1391 Access Panel Left Side Rear Relay Control
9 - - Not Used
10 OG 740 Battery Positive Voltage
11 OG 740 Battery Positive Voltage
12 TN/BK 1095 Access Panel Right Side Lock Actuators Unlock Control
13 L-BU 1344 Access Panel Right Side Relay Control
14 - - Not Used
15 OG 740 Battery Positive Voltage
16 RD 1042 Battery Positive Voltage (UF2)
17 OG 840 Battery Positive Voltage (UF2)
18 RD 1042 Battery Positive Voltage
19 OG 740 Battery Positive Voltage
20-21 - - Not Used
Connector Part Information 
  • OEM: 63995
  • Service: See Catalog
  • Description: 21-Way F Fuse Block (BK)
Terminal Part Information 
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
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