Chevrolet Silverado / GMC Sierra. Manual — part 205

Fig. 687: View Of Engine Coolant Temperature Sensor
Courtesy of GENERAL MOTORS CORP.

15. If reusing the engine coolant temperature sensor, if applicable, apply sealant GM P/N

12346004 (Canadian P/N 10953480) or equivalent, to the threads of the engine coolant
temperature gage sensor.

16. Install the engine coolant temperature sensor, if applicable.

Tighten: Tighten the engine coolant temperature sensor to 20 N.m (15 lb ft).

CYLINDER HEAD INSTALLATION - RIGHT SIDE

Tools Required

J 45059 Angle Meter. See Special Tools.

Installation

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 688: Right Side Cylinder Head Locator Dowel Pins Proper Installation Position
Courtesy of GENERAL MOTORS CORP.

1. Clean the cylinder head gasket surfaces on the engine block.

2. Inspect the cylinder head locator dowel pins for proper installation.

The installation height should be 6.3-6.5 mm (0.248-0.256 in) (a).

3. Clean the cylinder head gasket surfaces on the cylinder head.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 689: View Of Cylinder Head Gasket And Alignment Pins - Right
Courtesy of GENERAL MOTORS CORP.

4. Install the NEW cylinder head gasket in position over the cylinder head locator dowel pins.

IMPORTANT: Do not use any type sealer on the cylinder head gasket,

unless specified.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado