Fuel - Pedal Position Lower After Using Cruise Control

Number:
92-293-6C

Section:
6C

Date:
OCT. 1992

Corporate Bulletin No.:
266106

ASE No.:
A1, A8



Subject:
ACCELERATOR PEDAL POSITION IS LOWER AFTER USING CRUISE/MORE EFFORT NEEDED


Model and Year:
1991-92 S/T TRUCKS AND WL, G VANS



Owners of some 1991 and 1992 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 using 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. 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 appropriate 1992 Light Truck Service Manual, Fuel and Emissions section, 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

Use applicable labor time guide for labor hours.