Chevrolet Silverado / GMC Sierra. Service manual — part 1976

(4.8L, 5.3L, 6.0L, and 6.2L) .

5. Remove the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement.

6. Remove the engine ground strap bolt from the rear of the cylinder head.

7. Remove the ground strap from the cylinder head.

Fig. 277: View Of Cylinder Head & Bolts
Courtesy of GENERAL MOTORS CORP.

8. Remove and discard the cylinder head bolts (220, 221).

IMPORTANT: The cylinder head bolts are of a torque-to-yield design and

are NOT to be reused.

NOTE:

After removal, place the cylinder head on 2 wood blocks in

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

9. Remove the cylinder head (218).

Fig. 278: View Of Cylinder Head Gasket & Locating Pins
Courtesy of GENERAL MOTORS CORP.

10. Remove and discard the cylinder head gasket (217).

11. If required, clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and

Inspection .

Installation Procedure

order to prevent damage to the sealing surfaces.

CAUTION: Wear safety glasses in order to avoid eye damage.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

NOTE:

Clean all dirt, debris, and coolant from the engine block cylinder
head bolt holes. Failure to remove all foreign material may result in
damaged threads, improperly tightened fasteners or damage to
components.

IMPORTANT:

Do not reuse the cylinder head bolts. Install NEW cylinder
head bolts during assembly.

Do not use any type of sealant on the cylinder head gasket
(unless specified).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 279: Checking Cylinder Head Bolt Holes
Courtesy of GENERAL MOTORS CORP.

1. Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-

107, found in J 42385-200 may be used to clean the threads of old threadlocking material.
See Special Tools .

2. Spray cleaner GM P/N 12346139, P/N 12377981 (Canadian P/N 10953463), or equivalent

into the hole.

3. Clean the cylinder head bolt holes with compressed air.

4. Check the cylinder head locating pins for proper installation (a) 8.3 mm (0.327 in).

Fig. 280: View Of Cylinder Head Gasket & Locating Pins
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: When properly installed, with FRONT on the left side, the tab

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado