Chevrolet Silverado / GMC Sierra. Service manual — part 185

21. If reusing the engine oil pressure gage sensor, apply sealant GM P/N 12346004 (Canadian

P/N 10953480) or equivalent, to the threads of the engine oil pressure gage sensor.

22. Install the engine oil pressure gage sensor using the J 41712 . See Special Tools.

Tighten: Tighten the engine oil pressure gage sensor to 30 N.m (22 lb ft).

Fig. 618: Block Heater
Courtesy of GENERAL MOTORS CORP.

23. Install the block heater from the right side of the lower engine block.

Tighten: Tighten the block heater to XX N.m (XX lb ft).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 619: View Of Knock Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.

24. Install the knock sensor on the right side of the lower engine block.

25. Install the knock sensor bolt.

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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 620: View Of Knock Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.

26. Install the knock sensor on the left side of the lower engine block.

27. Install the knock sensor bolt.

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

CRANKSHAFT AND BEARING INSTALLATION

Tools Required

J 45059 Angle Meter. See Special Tools.

Installation

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 621: View Of Crankshaft Bearings At Engine Block
Courtesy of GENERAL MOTORS CORP.

1. Install the crankshaft bearings into the engine block.

2. Apply clean engine oil to the crankshaft bearings.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado