Chevrolet Silverado / GMC Sierra. Service manual — part 2763

7. Adjust the front toe. Refer to Front Toe Adjustment .

IDLER ARM INSPECTION

Tools Required

J 35999 Spring Scale. See Special Tools.

J 42640 Steering Column Anti-Rotation Pin

J 45101 Hub and Wheel Runout Gage

Inspection

1. Raise the vehicle on a hoist and support it with jackstands. Refer to Lifting and Jacking

the Vehicle .

2008 Chevrolet Silverado 1500

2008 STEERING Steering Linkage - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 14: Identifying J 42640
Courtesy of GENERAL MOTORS CORP.

2. Position the wheels straight-ahead and install anti-rotation pin J 42640 .

3. Install runout gauge J 45101 between the idler arm and the vehicle frame.

Ensure the runout gage is at zero before taking the measurement.

NOTE:

The wheels of the vehicle must be straight ahead and the
steering column in the LOCK position before disconnecting the
steering column or intermediate shaft from the steering gear.
Failure to do so will cause the SIR coil assembly to become
uncentered, which may cause damage to the coil assembly.

2008 Chevrolet Silverado 1500

2008 STEERING Steering Linkage - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 15: Placing J 35999 Near Relay Rod End Of Idler Arm
Courtesy of GENERAL MOTORS CORP.

4. Place scale J 35999 near the relay rod end of the idler arm. See Special Tools.

2008 Chevrolet Silverado 1500

2008 STEERING Steering Linkage - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 16: Measuring Upward Force
Courtesy of GENERAL MOTORS CORP.

5. Exert a 110 N.m (25 lb) force upward and then downward while measuring the total

distance the idler arm moves.

2008 Chevrolet Silverado 1500

2008 STEERING Steering Linkage - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado