Timing Chain, Sprockets & Tensioner - Removal

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The timing chain on the LD9 (VIN T) Twin Cam Engine is not to be replaced with the timing chain from any other model year. The timing sprockets are different on the Twin Cam engine and the shape of the links matches the sprockets. Engine damage may result if the wrong timing chain is used. The timing chain and the crankshaft sprocket must be marked so that they are reinstalled in the same side facing out at the time of reassembly.

Important: Read the entire procedure before removing the timing chain.

Mark the timing chain and the crankshaft sprocket outer surfaces for reassembly. Ensure that this is done in order to prevent noise and increased wear on the chain.
Remove the timing chain guides.

Fig 1: Timing Chain Guides
Courtesy of GENERAL MOTORS CORP.
Remove the tensioner assembly retaining bolts.
Remove the tensioner shoe. Use a small locking ring pliers to engage the hole in the locking tab to remove the shoe from the stud.

Fig 2: Tensioner Shoe
Courtesy of GENERAL MOTORS CORP.
Remove the timing chain.
Inspect the parts for wear. Replace the parts as required.
Replace the timing chain shoe or guides if the scoring exceeds 1.12 mm (0.045 in).

Fig 3: Timing Chain
Courtesy of GENERAL MOTORS CORP.