Chevrolet Silverado / GMC Sierra. Service manual — part 197

1. Install the NEW engine front cover.

2. Install the engine front cover bolts.

Tighten: Tighten the bolts to 12 N.m (106 lb in).

Fig. 658: camshaft position sensor & bolt

front cover.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Courtesy of GENERAL MOTORS CORP.

3. Lubricate the NEW camshaft position sensor O-ring seal with clean engine oil.

4. Install the NEW camshaft position sensor O-ring seal onto the camshaft position sensor

assembly.

5. Install the camshaft position sensor assembly until fully seated into the engine front cover.

6. Install camshaft position sensor bolt.

Tighten: Tighten the camshaft position sensor bolt to N.m ( lb in).

IMPORTANT: DO NOT reuse the original camshaft position sensor O-ring

seal. When installing the camshaft position sensor assembly
be sure the camshaft position sensor assembly is fully
seated and held stationary in the engine front cover camshaft
position sensor bore. A camshaft position sensor that is not
completely seated will cock in the engine front cover and
may result in erratic engine operation.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 659: View Of Crankshaft Position Sensor Seal O-Ring
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: DO NOT reuse the original crankshaft position sensor seal,

O-ring. When installing the crankshaft position sensor be
sure the crankshaft position sensor is fully seated and held

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

7. Lubricate the NEW crankshaft position sensor seal, O-ring, with clean engine oil.

8. Install the NEW crankshaft position sensor seal, O-ring, onto the crankshaft position sensor.

stationary in the engine front cover crankshaft position
sensor bore. A crankshaft position sensor that is not
completely seated will cock in the engine front cover and
may result in erratic engine operation.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado