Questions & Answers for: GMC Envoy pipes knocking

engine light/ knocking sensor The engine light came on in my 2004 envoy we put a code reader on it and it was in knocking sensor the light was on for about 2 weeks and has not been driven very much ...

engine knocks cold ok hot 2002 envoy I6 4.2 engine knocks when cold if its at the top end its pistion slap if its at the bottem end(of your engine) its a crank shaft bearing. with out going into ...

Can a cadylac converter cause a knocking noise from the engine? Not unless the pipes have seperated inside exaust even then the knocking comes from exaust not engine.

I have a 2004 GMC ENVOY that I just bought, motor sounded great at first, however after abut 500 kms, a knock started coming from the motor - it sounds like it is inside the engine. I was at a local ...

I have loud nocking in my 2002 envoy why is that Knocking can usually be traced to a lack of lubrication, old engine oil, or a batch of bad gasoline.  If you can determine where the knocking is ...

what is a knock sensor a knock sensor is what the computer uses to detect misfires in other words the knock sensor tells the computer when u have a misfire and  what cylinder is misfiring ...

rear blower fan making a knocking noise when running makes a knocking noise when running then stops when blower motor stops This may be a defective blower motor shaft bearing , have a technician ...

What could be wrong if I hear a knocking in the front of the engine and the engine is hard to start, as well as the engine will not idle? I have a knocking noise coming from the front part of my ...

I am a woman learning to fix my 2002 GMC Envoy and it is knocking and the oil disappeared. I had an oil change about 2 months ago. I drove my Envoy to town and on the way home it started knocking ...

In my 2004 GMC Envoy my AC vents blow out cold on the sides, dash board and the feet but not the front vents or the back seat vents and at times there's a knocking noise that comes and goes. The ...