Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 330 (ENGINE MECHANICAL - 2.2L)REMOVAL AND INSTALLATIONUNIT REPAIR ASSEMBLYTIMING CHAIN, SPROCKETS, AND TENSIONER (UNIT REPAIR)INSTALLATION

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Timing Chain, Sprockets, And TENSIONER (Unit Repair): Installation

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Installation

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Install timing chain drive sprocket to crankshaft with timing mark in the 5 o'clock position.

Fig 1: Installing Timing Chain Drive Sprocket To Crankshaft
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Always use new sprocket bolts.
Assemble intake camshaft sprocket to timing chain with timing mark lined up with the copper colored link. Finger-tighten a new intake camshaft sprocket bolt.

Fig 2: Assembling Intake Camshaft Sprocket To Timing Chain
Courtesy of GENERAL MOTORS CORP.
Lower the timing chain through the opening in the cylinder head. Use care to make sure that the chain goes around both sides of the cylinder block bosses.

Fig 3: Lowering Timing Chain Through The Opening In Cylinder Head
Courtesy of GENERAL MOTORS CORP.
Route timing chain around crankshaft sprocket and line up second silver link with timing mark on crankshaft sprocket in approximately the 5 o'clock position.

Fig 4: Lining Up Second Silver Link With Timing Mark On Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.