There are Two. One is on or close to the exhaust manifold and the other is after the Catalytic Converter on the exhaust pipe.
The humming noise can be in your exhaust system. The exhaust will heat up and seal the area where there can be a leak. The hot exhaust will cause the noise to decrease.
harmonic balance maybe bad
possibly you need a better grade of gas?
My car was making this noise when I started it up. the noise went away after driving for a while. turnd out I just needed more oil.
A gasket leaking will cause this noise. Did you torque to the right specs and in the right sequence then retorque after 3 heat cycles.
Where to hook code reader 2002 envoy
where is the oil filter located on an 2002 GMC Envoy
Maybe, or you have a bad lifter .
Riunning lighs not working 2002 gmc envoy
GMC Envoy was created in 2002.
Have you checked your Exhaust Muffler and pipes ? Probably the fuel pump
where is the blower motor resistor located on 2002 gmc envoy?
How to change brake pads on 2002 GMC Envoy front brakes.
It has something to do with the rear ac actuator. The ticking noise comes from the "door" of the valve...some dealerships call it "flappers".
The axle/hub nut torque on a 2002 GMC Envoy is 103 ft.lbs.
It is just a guess when I am not able to hear the particular sound. If it is somewhat of a metalic tubing sound it could just be the exhaust tubing cooling down.
If the instrument cluster on a 2002 Envoy is not working, check the fuses. There is a main fuse for this under the hood on top of the battery.
The GMC Envoy was produced in 1998 and not again until 2002. The Envoy was produce until 2009. GMC is no longer producing a vehicle with the name Envoy.
Please describe where the ticking is coming from, and what you're doing (if anything) when it happens. Please describe where the ticking is coming from, and what you're doing (if anything) when it happens.
One can purchase a used 2002 GMC Envoy in online car-selling websites that sell used cars. In addition, one can purchase a used 2002 GMC Envoy from one's peers if one of those peers have the car.
I also have a 2002 Mustang GT with a bad PCV valve. It made a ticking noise while the motor was running then ticked for 3-4 seconds after it was turned off. A way to test if it is a bad PCV valve is to remove it and see if the noise stops. It is in the right head just under the intake hose. Lift it out and if the noise stops there is your problem. It's a five dollar fix.
Can you tell me how to remove the box covering the spark plugs in a 2002 gmc envoy slt 4.2