For 1990-2009 cars

# SEAT CHUCKING NOISE TWO-WAY MANUAL SEAT ADJUSTER

#### Models Affected: 1984-88 FIREBIRD

This bulletin is intended to reduce the number of manual two-way seat adjusters being REPLACED for chucking conditions, when adjustments to the system may correct the condition. This bulletin is not intended to resolve all chucking conditions.

1. Remove complete seat assembly from vehicle and place upside-down on clean work surface.

2. Remove assist spring, and using adjuster handle, release inner and outer lock bars and move adjuster track fore and aft several times.

Replace Only If:

A. Adjuster can not be cycled. B. Adjuster track toggles within housing. C. Other identifiable conditions exists.

3. Reinstall assist spring to the handle side track, and position both adjuster tracks so the seat is full forward.

4. Verify that the inner and outer lock bars are seated within the last opening in the adjuster track by visual inspection.

5. With seat still in full forward position, reinstall in vehicle and torque rear attachments to 20-28 N.m.

6. Start front attachments with seat full forward, adjust seat rear-ward and torque to 20-28 N.m.

#### WARRANTY INFORMATION

Labor Operation: T1379

Labor Time : .3 Hours

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.