Timing Chain and Sprockets Removal

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 42846 Crankshaft Protector Button

Measure the camshaft timing chain free play. If the chain can be moved back and forth in excess of 16 mm (0.625 in), make a note that the camshaft timing chain and the sprockets must be replaced during assembly.
Remove the camshaft sprocket bolts.
Remove the camshaft sprocket and the camshaft timing chain.

Fig 1: Camshaft Sprocket & Timing Chain
Courtesy of GENERAL MOTORS CORP.
Install the J 42846 (1) into the end of the crankshaft.
Remove the crankshaft sprocket using a suitable three jaw puller (2).

Fig 2: Removing Crankshaft Sprocket Using J 42846
Courtesy of GENERAL MOTORS CORP.