GMC C7 1986: STEERING:HYDRAULIC POWER ASSIST SYSTEM

General Information

NHTSA Campaign ID Number: 86V170000

Make Model Year
GMC C7 1986
Date Owners Notified Date Received by ODI Date Added to Database
1987-02-20 1986-12-22 1986-12-30

Production Dates: 1985-03-01 - 1986-07-01

Manufacturers Involved: General Motors, LLC

Component: STEERING:HYDRAULIC POWER ASSIST SYSTEM

Potential Number Of Units Affected: 9038

Report Initiator: MFR MFR Report

Summary

THE POWER STEERING ASSIST CYLINDER MOUNTING BRACKET BOLTS MAY LOOSEN DUE TO PAINT ON THE BOLT THREADS AND THE MOUNTING BRACKET MATING SURFACE. CONSEQUENCE OF DEFECT: THIS MAY RESULT IN LOOSENESS AND ERRATIC STEERING DURING FULL TURNS. WITH CONTINUED OPERATION POWER CYLINDER COULD DETACH FROM THE FRAME RAIL RESULTING IN RESTRICTED STEERING, SEVERING OF FRONT BRAKE HOSE AND LOSS OF FRONT AXLE BRAKING. WITH EITHER CONDITION, A VEHICLE CRASH COULD RESULT.

Remedy

REMOVE PAINT FROM MATING SURFACES OF BRACKET AND FRAME RAIL; REPLACE POWER STEERING ASSIST CYLINDER MOUNTING BOLTS.

Notes

SYSTEM: POWER STEERING. VEHICLE DESCRIPTION: MEDIUM DUTY TRUCKS EQUIPPED WITH POWER STEERING AND 12,000 LBS. FRONT AXLES.