S15/T15 Jimmy 2WD L4-119 1.9L VIN A 2-BBL (1983)
Cruise Control Switch: Technical Service Bulletins
Cruise Control - Custom Cruise III, Mode Information
Number:
83-I-11
Section:
VI
Date:
Nov. 1982
SUBJECT:
CUSTOM CRUISE III R/A (RESUME ACCEL) MODE INFORMATION - 1983 "S", "T" AND "C-K" 10-20 MODELS
TO:
ALL CHEVROLET DEALERS
When the brake pedal is momentarily depressed to disengage cruise operation, the cruise set speed is retained in the system memory. Momentarily
moving the slider to the R/A (Resume/Accel) position will return the vehicle to the previously set speed.
Do not hold the slider in the R/A position --- release it immediately.
If the slider is held in the R/A position for more than one second, the system reverts to the accel mode and will continue to accelerate. When the slider is
released after one second retention, the speed to which the vehicle accelerated becomes the new cruise speed. The vehicle operator may erroneously
interpret this failure to return to the previously set speed as an inoperative resume function.
In order to minimize transmission shift cycling, the electronic controller has a feature programmed into it that limits excess throttle during resume or
accel modes.
On certain steep grades, such as encountered in mountainous terrain, the vehicle acceleration during the resume or acceleration mode will be reduced due
to the controller action.
If the grade is sufficiently long, the cruise system may drop out, though the cruise set speed memory is retained in the controller. Drop out occurs
because the vehicle has not reached "set speed" within the controller accel limits computed for normal road slope operation. This is an acceptable
operating condition.
The resume and accel feature may be reinitiated with the slide switch when the road slope returns to normal.
