Chevrolet Silverado / GMC Sierra. Service manual — part 1434

Fig. 125: Pinion Nut And Washer
Courtesy of GENERAL MOTORS CORP.

2. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the splines of

the pinion yoke.

3. Install the pinion yoke. Align the marks made during removal.

4. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few

pinion shaft threads show through the yoke.

5. Install the washer and a NEW pinion nut.

NOTE:

Refer to Pinion Flange/Yoke Installation Notice .

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 126: Holding Pinion Yoke With Special Tool
Courtesy of GENERAL MOTORS CORP.

6. Install the J 8614-01 onto the pinion yoke as shown.

7. Tighten the pinion nut while holding the J 8614-01 .

Tighten: Tighten the nut until the pinion end play is just taken up. Rotate the pinion while
tightening the nut to seat the bearings.

NOTE:

Refer to Fastener Notice .

IMPORTANT: If the rotating torque is exceeded, the pinion will have to be

removed and a new collapsible spacer installed.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 127: Measuring Pinion Rotating Torque
Courtesy of GENERAL MOTORS CORP.

8. Measure the rotating torque of the pinion. Compare this measurement with the rotating

torque recorded during removal.

Tighten: Tighten the nut in small increments, as needed, until the rotating torque is 0.40-
0.57 N.m (3-5 lb in) greater than the rotating torque recorded during removal.

9. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings

have seated. Recheck the rotating torque and adjust if necessary.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 128: Identifying Driveshaft Pinion, Yoke Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

10. Install the propeller shaft (3) to the pinion yoke (4).

Align the reference marks made during removal.

11. Install the propeller shaft yoke retaining clamps and the bolts.

Tighten: Tighten the bolts to 25 N.m (18 lb ft).

12. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Rear Axle

Lubricant Level Inspection (11.5 Inch Axle) or Rear Axle Lubricant Level Inspection
(8.6, 9.5 LD Axle) or Rear Axle Lubricant Level Inspection (10.5 Inch Axle).

13. Lower the vehicle.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado