Q: Thumping sound upon accelleration in the front end. 2004 MC Envoy
There is a thumping sound upon excelleration especially above 20 mph, both wheel hum assembly in the front have been repalced recently. it feels like it is coming from underneath the gas pedal. do you know what the problem might be. it seems to get faster and faster the faster you drive. and louder.
My car has 154000 miles.
My car has an automatic transmission.
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