Timing Chain – GM (55569250)

Timing Chain transmits drive at a fixed ratio and is matched to its shaft by tooth count and spline. A single tooth difference changes the ratio and surfaces as a speedometer error or a shift complaint.

Replace the Timing Chain when tooth faces show pitting, when a whine rises with road speed, or when there is metal in the fluid. Gears wear as a set, so replacing half of one usually brings the noise back.

Ordering reference for the Timing Chain is part number 55569250, categorised under Camshafts & Timing. Match that number against the component you are removing before you order.

Genuine GM supplied for this Timing Chain, with the engineering number unchanged from the factory reference stamped on the original.