Timing Chain and Sprockets Removal

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8433-1 Two Jaw Puller. See Special Tools and Equipment .
J 41558 Crankshaft Sprocket Remover. See Special Tools and Equipment .
J 41816-2 Crankshaft End Protector

Fig 1: Camshaft Sprocket, Bolt & Timing Chain

Courtesy of GENERAL MOTORS CORP.

NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.

Remove the camshaft sprocket bolts.
Remove the camshaft sprocket and timing chain.

Fig 2: Removing The Crankshaft Sprocket Using J 8433-1, J 41816-2 & J 41558

Courtesy of GENERAL MOTORS CORP.

Use the J 8433-1 , the J 41816-2 , and the J 41558 in order to remove the crankshaft sprocket. See Special Tools and Equipment .

Fig 3: View Of Crankshaft Sprocket

Courtesy of GENERAL MOTORS CORP.

Remove the crankshaft sprocket.

Fig 4: View Of Crankshaft Key & Keyway

Courtesy of GENERAL MOTORS CORP.

Remove the crankshaft sprocket key, if required.