Chevrolet Silverado / GMC Sierra. Manual - part 184
Fig. 614: Right Side Cylinder Head Locator Dowel Pins Proper Installation Position
Courtesy of GENERAL MOTORS CORP.
15. Install the right side cylinder head locator dowel pins, if required.
The installation height should be 6.3-6.5 mm (0.248-0.256 in) (a).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 615: View Of Engine Block Coolant Drain Hole Plugs
Courtesy of GENERAL MOTORS CORP.
16. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of
the engine block coolant drain hole plugs.
17. Install the engine block coolant drain hole plugs.
Tighten: Tighten the engine block coolant hole plugs to 20 N.m (15 lb ft).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 616: Engine Oil Pressure Sensor Proper Installation Position
Courtesy of GENERAL MOTORS CORP.
18. If reusing the engine oil pressure sensor fitting, apply sealant GM P/N 12346004 (Canadian
P/N 10953480) or equivalent, to the threads of the engine oil pressure sensor fitting.
19. Install the engine oil pressure sensor fitting.
IMPORTANT: Do not loosen the engine oil pressure fitting after the initial
torque has been obtained.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Tighten: Tighten the engine oil pressure sensor fitting to 15 N.m (11 lb ft).
20. Rotate the engine oil pressure sensor fitting clockwise to the proper position (1), 50 degrees
from the centerline (2).
Fig. 617: View Of Engine Oil Pressure Gage Sensor
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not rotate the engine oil pressure fitting clockwise more
than 359 degrees after the initial torque has been obtained.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado