Fuel - Accelerator Position Is Lower After Using Cruise

BULLETIN NUMBER:
92-6A-135

SECTION:
6A

NUMBER:
1

CORPORATE
REFERENCE NUMBER:
266106

DATE:
October 1992



SUBJECT:
ACCELERATOR PEDAL POSITION IS LOWER AFTER USING CRUISE/MORE EFFORT NEEDED (SERVICE PROCEDURE)

MODELS:
1991-92 S/T TRUCKS AND M/L/G VANS



Owners of some 1991-92 S/T and M/L vehicles equipped with 4.3L engines (RPO LB4) or 1991 and 1992 G-vans equipped with 4.3L, 5.0L and 5.7L engines (RPO LB4, L03 and L05) may comment that after tising cruise control the accelerator pedal position at idle is lower. Customers may also comment that more effort is needed to use the accelerator pedal. Floor contact by the pedal may also be encountered prior to wide open throttle reducing the performance capability of the vehicle.





The above conditions may be the result of the accelerator cable slipping out of the pulley channel on the throttle body (Figure 1). The pulley acts as a cam and is located on the driver's side of the TBI unit 1. When the cable slips off the pulley the effective radius of the cam is reduced and more effort is required to depress the pedal. Also the pedal position at idle is lowered.

The accelerator cable may slip out of the pulley channel when in cruise control and under the following conditions:

- The accelerator cable is kinked, curled, or bent.

- A build up of foreign material occurs in the back side of the cable wiper-cap where the cable enters the cable jacket. The foreign material prevents the cable to operate freely.



SERVICE PROCEDURE

To correct vehicles encountering the cable slipping out of the pulley replacement of the accelerator cable is necessary. Refer to the 1992 Light Duty Fuel and Emissions Service Manual X-9236, page 4-72 for proper accelerator cable removal and installation.

NOTE:
Before installation, inspect the cable for kinks, curls or bends, especially at the TBI end.

SERVICE PARTS INFORMATION

Part Number Description Application
15693481 Cable Asm-Accel S/T
15957337 Cable Asm-Accel M/L
15631395 Cable Asm-Accel G

Parts are currently available from GMSPO.

WARRANTY INFORMATION

For vehicles repaired under warranty use:

Labor Operation: J5330

Labor Time: 0.4 hrs