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Connector Identification

Fig 1: PCM 80-Pin Harness Connector Terminal ID (C1 & C2 - "G" & "H" bodies)
G98I01904Courtesy of GENERAL MOTORS CORP.
Fig 2: PCM 80-Pin Harness Connector Terminal ID (C1 - Except "G" & "H" Bodies)
G98I01904Courtesy of GENERAL MOTORS CORP.
Fig 3: PCM 80-Pin Harness Connector Terminal ID (C2 - Except "G" & "H" bodies)
G98B01905Courtesy of GENERAL MOTORS CORP.
Fig 4: 20-Pin Connector Terminal Locations (Harness-To-Transaxle)
G98H01890Courtesy of GENERAL MOTORS CORP.
20-PIN WIRING HARNESS-TO-TRANSAXLE CONNECTOR TERMINAL ID

Terminal Wire Color (1) Component
A LT GRN 1-2 Shift Solenoid
B YEL 2-3 Shift Solenoid
C PPL Pressure Control Solenoid (High)
D LT BLU Pressure Control Solenoid (Low)
E RED Fused Ignition No. 1 Feed
L BRN TFT Sensor Signal
M GRY Sensor Ground
N PNK Pressure Switch Input A
P ORN Pressure Switch Input C
R DK BLU Pressure Switch Input B
S BLK Input Speed Sensor (High)
T TAN TCC PWM Solenoid
U WHT TCC Release Switch Input
V DK GRN Input Speed Sensor (Low)
W N/A N/A
(1) Table applies to 1998 Riviera. Terminal letters and components are the same for all models. Wire colors may vary. See WIRING DIAGRAMS  .
Fig 5: 20-Pin Connector Terminal Locations (Harness-To-PCM)
G98J01891Courtesy of GENERAL MOTORS CORP.
20-PIN WIRING HARNESS-TO-PCM CONNECTOR TERMINAL ID

Terminal Wire Color (1) Component
A LT GRN 1-2 Shift Solenoid
B YEL/BLK 2-3 Shift Solenoid
C RED/BLK Pressure Control Solenoid (High)
D LT BLU/WHT Pressure Control Solenoid (Low)
E PNK Fused Ignition No. 1 Feed
F-K N/A N/A
L YEL/BLK TFT Sensor Signal
M BLK Sensor Ground
N PNK Pressure Switch Input A
P RED Pressure Switch Input C
R DK BLU Pressure Switch Input B
S RED/BLK Input Speed Sensor (High)
T BRN TCC PWM Solenoid
U YEL TCC Release Switch Input
V DK BLU/WHT Input Speed Sensor (Low)
W N/A N/A
(1) Table applies to 1998 Riviera. Terminal letters and components are the same for all models. Wire colors may vary. See WIRING DIAGRAMS  .
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