GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello, my name is Bobby. Thank you for the question. Can you tell me if it makes the noise only from the rear? Does it do it as it sits with the vehicle off also?
Okay. So the clarify, if the engine is running you get a knocking from the rear of the vehicle? Is it a constant and rhythmic knock or does it occur every now and then?