Timing gears can cause knocking sound on Pontiac Grand Am

Submitted by Vehicle Owner · May 29, 2025
Published by RepairPal

Problem overview

Timing gears may wear causing a mild to severe knocking noise from the front of the engine. Replacement of the timing gears is necessary.

6 people reported this problem
1 comment
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Pontiac Grand Am vehicles with this problem

4 model years affected
Average mileage: 81,547 miles
(10,094 - 153,000)

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