Chevrolet Silverado / GMC Sierra. Manual — part 2746

Fig. 7: Drilling Hole In Shock Absorber At Centerpunched Locations
Courtesy of GENERAL MOTORS CORP.

1. Make an indentation 10 mm (0.4 in) from the bottom (4) of the tube (3) using a

centerpunch.

2. Clamp the shock absorber in a vise horizontally with the shock absorber rod (1) completely

extended.

3. Drill a hole in the shock absorber at the centerpunch (4) using a 5 mm (3/16 in) drill bit.

Gas or a gas/oil mixture will exhaust when the drill bit penetrates the shock absorber. Use
shop towels in order to contain the escaping oil.

4. Make an indentation in the middle (2) of the tube (3) with a centerpunch.

5. Drill a second hole in the shock absorber at the centerpunch (2) using a 5 mm (3/16 in) drill

bit. Oil will exhaust when the drill bit penetrates the shock absorber. Use shop towels in
order to contain the escaping oil.

6. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan

horizontally with the holes down. Move the rod (1) in and out of the tube (3) to completely
drain the oil from the shock absorber.

SPRING JOUNCE BUMPER REPLACEMENT (2500/3500)

2008 Chevrolet Silverado 1500

2008 SUSPENSION Rear Suspension - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 8: Spring Jounce Bumper (2500/3500)
Courtesy of GENERAL MOTORS CORP.

SPRING JOUNCE BUMPER REPLACEMENT (1500)

Callout

Component Name

Preliminary Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the rear tire and wheel. Refer to Tire and Wheel Removal and

Installation .

1

Jounce Bumper Nut (Qty: 2)

Tighten: 33 N.m (24 lb ft)

NOTE:

Refer to Fastener Notice .

2

Jounce Bumper

2008 Chevrolet Silverado 1500

2008 SUSPENSION Rear Suspension - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 9: Spring Jounce Bumper (1500)
Courtesy of GENERAL MOTORS CORP.

LEAF SPRING REPLACEMENT

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Support the rear axle independently in order to relieve the tension on the leaf springs.

3. Remove the trailer hitch, if equipped. Refer to Trailer Hitch Replacement (Light Duty)

or Trailer Hitch Replacement (Heavy Duty) .

4. Remove the fuel tank, left side only. Refer to Fuel Tank Replacement (15 Reg Cab w/26

Gal Tank) or Fuel Tank Replacement (25 Ext/Crew Cab w/26 gal Tank) or Fuel
Tank Replacement (15 Ext/Crew Cab w/26 gal Tank) or Fuel Tank Replacement
(15/25 Reg/Ext/Crew Cab w/34 gal Tank) or Fuel Tank Replacement (35
Reg/Ext/Crew Cab w/34 gal Tank) .

Callout

Component Name

Preliminary Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .

1

Jounce Bumper Bolt

Tighten: 33 N.m (24 lb ft)

NOTE:

Refer to Fastener Notice .

2

Jounce Bumper

2008 Chevrolet Silverado 1500

2008 SUSPENSION Rear Suspension - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado