Camshaft Installation

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 7872 Dial Indicator Set

Install the camshaft thrust plate to the camshaft.
Install the camshaft driven gear.
Install a new camshaft driven gear bolt.
Leave the bolt finger tight.

Fig 1: View Of Camshaft, Camshaft Gear & Camshaft Thrust Plate

GM660540

Courtesy of GENERAL MOTORS CORP.

Install the camshaft and gear assembly into the cylinder block, aligning the camshaft gear to the crankshaft gear as shown.

Fig 2: Aligning Camshaft W/Cylinder Block

GM663813

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the camshaft thrust plate bolts.
Tighten: Tighten the camshaft thrust plate bolts to 22 N.m (16 lb ft).
Install the camshaft position sensor exciter ring to the camshaft gear.
Install the camshaft position sensor exciter ring bolts.
Tighten: Tighten the camshaft position sensor exciter ring bolts to 9 N.m (80 lb in).

Fig 3: View Of Camshaft Exciter Ring & Camshaft Thrust Plate Bolts

GM663091

Courtesy of GENERAL MOTORS CORP.

Block the crankshaft from turning using a wooden handle.

Fig 4: Blocking Crankshaft Using Wooden Handle

GM660539

Courtesy of GENERAL MOTORS CORP.

Install the new camshaft gear bolt.
Tighten: Tighten the new camshaft gear bolt to 234 N.m (173 lb ft).
Measure the camshaft end play with J 7872 .
- The production value is 0.050-0.114 mm (0.0020-0.0045 in) and service limit is 0.2 mm (0.0079 in).
- Replace the camshaft gear or the camshaft thrust plate if measured value exceeds the service limit.

Fig 5: Measuring Camshaft End Play Using J 7872

GM663816

Courtesy of GENERAL MOTORS CORP.