Chevrolet Silverado / GMC Sierra. Service manual — part 1431

Fig. 114: 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. 115: 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. 116: 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 propeller shaft yoke retaining clamp bolts to 25 N.m (18 lb ft).

12. Install the axle shafts (10.5 inch, 11.5 inch axle). Refer to Rear Axle Shaft and/or Gasket

Replacement.

13. Install the brake rotors (8.6 inch, 9.5 inch axles). Refer to Rear Brake Rotor

Replacement (JD9) or Rear Brake Rotor Replacement (JH6) or Rear Brake Rotor

2008 Chevrolet Silverado 1500

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

Replacement (JH7) .

14. Install the brake calipers (8.6 inch, 9.5 inch axles). Refer to Rear Brake Caliper

Replacement (JH6, JH7) or Rear Brake Caliper Replacement (JD9) .

15. Install the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .

16. 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).

17. Lower the vehicle.

DRIVE PINION FLANGE/YOKE AND/OR OIL SEAL REPLACEMENT (8.6 INCH AXLE W/DRU
W/DRUM BRAKES)

Tools Required

J 8614-01 Flange/Pulley Holding Tool

J 22388 Rear Axle Pinion Oil Seal Installer - Rear. See Special Tools.

Removal Procedure

IMPORTANT: Observe and mark the positions of all the driveline components,

relative to the propeller shaft and the axles, prior to disassembly.
These components include the propeller shafts, drive axles,
pinion flanges, output shafts, etc. Reassemble all the
components in the exact places in which you removed the parts.
Follow any specifications, torque values, and any measurements
made prior to disassembly.

2008 Chevrolet Silverado 1500

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