What causes multiple popping noises under drivers side , after hot and while driving 2004 avalanche

40

Asked by mrfixit6200 Jul 07, 2014 at 05:32 PM about the 2004 Chevrolet Avalanche 1500 RWD

Question type: Maintenance & Repair

2 Answers

51,215

The cooling down of the exhaust pipes and or the catalytic converters. If you can after stopping it when the sounds start, stick you head underneath and pinpoint the site of the popping. You cats may be not working correct or getting too hot and crackling as they cool down. If your running too rich of fuel, it may heat up the catalytic converters so you may have that part checked. Possible code reads or something along those lines.

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