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 G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 543 (GENERAL INFORMATION)INTRODUCTIONKEY AND LOCK CYLINDER CODINGASSEMBLING AND CODING THE DOOR LOCK CYLINDER

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Assembling and Coding the Door Lock Cylinder

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Assembling and Coding the Door Lock Cylinder

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The door lock cylinder uses seven tumblers (positions 3 through 9). The tumbler positions are staggered on both sides of the lock cylinder (five on one side and three on the other).

Fig 1: View Of Door Lock Cylinder Components

Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

NO RELATED

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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.