STG COLUMN SHAKING/VIBRATION INSTALL NEW PENCIL BRACE

SUBJECT: STEERING COLUMN SHAKING/VIBRATION

MODEL and YEAR: 1992 G VANS

Some owners of 1992 G-Vans may experience a shaking/vibration at the steering column.

The cause is due to several changes in the steering column assembly for 1992 model year G-Vans.

A pencil brace has been developed to minimize steering column/wheel vibration. The pencil brace should be installed from the cowl to the lower steering column bracket, behind the existing pencil brace.

When installing the new pencil brace it is not necessary to remove the instrument panel. The pencil brace can be installed by removing the instrument cluster. This will allow access to the cowl for the upper attachment stud.

Service Procedure

1) Remove the lower steering column trim panel.

2) Remove the upper steering column support retaining nuts(2) (Figure 1).

3) Remove the steering column lower bracket bolts(2).

4) Remove the instrument panel bezel retaining screws.

5) Remove the bezel.

6) Remove the instrument panel cluster retaining screws.

7) Remove the instrument panel cluster.

8) Remove the left side steering column pencil brace upper retaining nut (Figure 2.)

9) Remove the existing pencil brace and install the new brace behind the existing brace.

10) Install the original brace removed in step 9.

11) Raise the steering column and install the steering column support retaining nuts (Torque nuts 20-34 N.m) (15-25 lbs.ft.).

12) Connect the new brace below the steering column support and install the steering column bracket retaining bolts (Torque bolts 18-25 N.m) (13-18 lbs.ft.).

Note: Install the pencil brace attachment below the lower support bracket on the steering column (Figure 1 and 2.)

13) Install retaining nut to the upper pencil brace bolt (Torque to 25-30 N.m)(18-22 lbs.ft.).

14) Install the instrument cluster and retaining bolts.

15) Install the instrument panel bezel and the retaining screws.

16) Install the steering column lower trim panel.

Note: It is not necessary to remove the instrument panel from the vehicle.

PARTS INFORMATION Part # ----------------- ------ Steering column lower support (Pencil brace) 15699970

Parts are currently available from GMSPO.

WARRANTY INFORMATION

For vehicles repaired under warranty use:

T7526 0.5 hrs

Note: Labor Operation is coded to base vehicle coverage in the warranty system.

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.