Where is the timing mark on 2002 Chevy Express 1500?

On a 2002 Chevy Express 1500, the timing mark is typically located on the harmonic balancer, which is situated at the front of the engine. You should see a mark or notch that aligns with a timing tab on the engine block. For precise timing adjustments, it's essential to refer to the vehicle’s service manual for specific details and alignment procedures.