TrailBlazer 2WD L6-4.2L VIN S (2003)
Steering Shaft Coupler: Customer Interest
Steering - Steering Column Squeaking/Rubbing Noise
Bulletin No.: 02-02-35-006B
Date: March 17, 2006
TECHNICAL
Subject:
Squeak, Rub/Scrub Type Noise in Steering Column (Lubricate Upper Intermediate Shaft Serration (Slip) Joint and Remove Material from Upper
Intermediate Shaft Bushing)
Models:
2002-2003 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2003 GMC Envoy, Envoy XL
2002-2003 Oldsmobile Bravada
Supercede:
This bulletin is being revised to change the lubricant part number. Please discard Corporate Bulletin Number 02-02-35-006A (Section 02 - Steering).
Condition
Some customers may comment on a squeak noise coming from the steering column while turning the steering wheel. Some customers may also comment
on a rubbing/scrubbing type noise/feel in the steering wheel during low speed turns/parking maneuvers. This condition may be more pronounced in cold
temperatures.
The rubbing/scrubbing noise condition affects vehicles built prior to VIN breakpoint 32214010 (Moraine, OH) and 36170447 (Oklahoma City, OK).
Cause
Inadequate distribution and amount of grease in the serration (slip) joint of the upper intermediate shaft may cause the squeak noise. The
rubbing/scrubbing type noise may be due to an interference fit between the upper intermediate shaft boot seal and the intermediate shaft bushing.
Correction
Lubricate the upper intermediate shaft serration (slip) joint. After lubrication, remove material from the upper intermediate shaft bushing. Use the
following procedure.
1.
Remove the two screws that retain the left closeout/insulator panel to the instrument panel (IP).
2.
Release the insulator panel retaining clip from the IP substrate and lower the panel.
3.
Remove the push pin retainer and the LH floor air outlet duct from the heater module.
4.
Insert the flexible applicator hose of the spray lubricant, P/N 89021668 (Canadian P/N 89021674), through the top, hollow end (1) of the
intermediate shaft.