Electrical - Ignition Switch Wires Rub on Pedal Linkage

9218chevy01

Number: 88-433-6D

Section: 6D

Date: January 1990

Corporate Bulletin No.: 966403


Subject:
REROUTING IGNITION SWITCH HARNESS TO PROVIDE CLEARANCE TO BRAKE PEDAL


Model and Year:
1987-88 UNITED STATES POSTAL SERVICE S1 TRUCKS


TO:
ALL CHEVROLET DEALERS

Ignition switch wiring harness and brake pedal linkage interference could cause ignition switch wiring harness wear in early production USPS vehicles. Should you be asked by USPS to repair this condition on one of these vehicles, the service procedure below should be followed.

Vehicles Involved

1987 and 1988 USPS Vehicles from 1GBBS10E2H2300001 to 1GBBS10E2J2304242

Parts Information

Quantity
1

Description
Nylon Strap

Part #
11509088

Parts are currently available from GMSPO.

Service Procedure





1. See Figure 1.

2. Pull the ignition switch wire harness to the vehicle left side of the steering column.
Thread a nylon strap (P/N 11509088) around the harness and through the opening between the brake pedal support bracket and the engine cover.

3. Tighten the strap around the harness and the bracket leg to obtain a minimum of 0.75" clearance between the harness and the brake pedal lever.

4. Cut off and remove excess strap.