A/T Upshift Control System (08-23-86)
Publication date: 1986-11-13Reference number: 08-23-86
A/T UPSHIFT CONTROL SYSTEM
TECHNICAL SERVICE BULLETIN
Reference Number(s): 08-23-86, Date of Issue:
November 13, 1986
UPSHIFT CONTROL SYSTEM FOR AUTOMATIC TRANSMISSIONS (KDLH)
APPLICATION
Model(s): 1983-86 Vehicles Equipped with Automatic Transmissions
Group: Transmissions
Bulletin No.: 08-23-86
Date: November 13, 1986
SERVICE INFORMATION
Some Automatic Transmission models from 1983 to 1986 have an "upshift control system" or kickdown low hold (KLDH).
Automatic Transmission vehicles are equipped with an upshift control system in order to meet applicable EPA emission control standards. After a cold start, that system may prevent the transmission from upshifting from first to second gear for approximately up to one minute or until vehicle speed reaches approximately 40 km/H (25 MPH), whichever occurs first. This characteristic is normal. Routine shifting can be obtained by warming up the engine before starting out.
NOTE:
THIS EXPLANATION APPLIES TO ALL MODELS WITH THE KDLH SYSTEM.
MODELS WITH THE (KDLH) SYSTEM
| MODEL YEAR | VEHICLE TYPE |
|---|---|
| 1983-1984 Except Turbo EFI |
|
| " | Hatchback FWD |
| " | 4 Door Sedan FWD |
| " | Hardtop GL FWD |
| " | Station Wagon GL FWD |
| " | Station Wagon GL FWD |
| " (4WD Cal. Only) |
Station Wagon GL 4WD |
| " (4WD Cal. Only) |
BRAT GL 4WD |
| 1985-1986 Except Turbo EFI (*4WD Cal. Only) |
|
| " | 4 Door Sedan GL FWD Carb. |
| " | 4 Door Sedan GL SPI |
| " | 4 Door Sedan GL-10 SPI |
| " | 4 Dr Sdn GL-10 MPI (Non-Turbo) |
| " | Station Wagon GL FWD Carb. |
| " | Station Wagon GL SPI |
| " | Station Wagon GL-10 SPI |
| " | S/W GL-10 MPI (Non-Turbo) |
| " | 3 Door Coupe GL SPI |
| " | XT GL MPI (Non-Turbo) |
| " | Hatchback GL FWD Carb. |
| " | *4 Door Sedan GL {4WD Carb.{ |
| " | *Station Wagon GL (4WD Carb.) |
| " | *3 Door Coupe GL (4WD Carb.) |
| " | *BRAT GL (4WD Carb.) |