Timing Chain and Sprockets Removal

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8433-1 Two Jaw Puller
J 41558 Crankshaft Sprocket Remover
J 41816-2 Crankshaft End Protector

CAUTION: 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 1: Removing Camshaft Sprocket Bolts, Sprocket & Timing Chain
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.

Fig 2: Removing Crankshaft Sprocket Using J 8433-1, J 41816-2 & J 41558
Courtesy of GENERAL MOTORS CORP.
Remove the crankshaft sprocket.

Fig 3: Removing Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.
Remove the crankshaft sprocket key, if required.

Fig 4: Removing Crankshaft Sprocket Key
Courtesy of GENERAL MOTORS CORP.