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2002 Trailblazer and every time you start the vehicle it sounds like someone is knocking on the back window It knocks very quickly 3 times about 10 times or so?
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∙ 16y ago
Check for broken or loose exhaust hanger
Wiki User
∙ 16y ago
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What causes a knocking sound from the fly wheel trans area on a 2004 trailblazer 4.2 4 wheel drive?
possibly a warped or cracked flywheel...i had a vehicle that was doing this once and i let it go until i went to accelerate to pass someone and that was all she wrote....flywheel broke into pieces...i would get this to a shop and looked at ASAP cause if the flywheel breaks you gonna be stuck
What causes a knocking sound in your car?
many many things, Loose lug nuts which lets wheel make knocking noise. Engine will make a knocking noise if it is really low on oil. Some timing belts make a knocking, slapping noise just before they break.These are just a few examples . Have someone ride in car with you as you duplcate the noise and see if they can determine which part of the vehicle it is coming from.
Where is ambient sensor on 2004 Chevy Trailblazer?
The sensor is located in the front of the vehicle. On my trailblazer it is just behind the grill on the drivers side. You can't miss it.
Where is evap canister on a 2003 trailblazer?
The evap canister on the 2003 Trailblazer is located on a bracket near the fuel tank and is almost touching the under-body of the vehicle.
What does the symbol of a wrench and an oil can mean on a Chevy Trailblazer?
The symbol of a wrench and an oil can on the dash of a Chevy Trailblazer means that your vehicle needs oil. If the light doesn't go away oil is added, you need to take your vehicle in for service.
Does 2005 Chevy Trailblazer have a key chip?
No. The anti theft is in the ignition not the key for that vehicle.
What could be the problem if the check enigne light is on and there is a knocking noise?
Have vehicle scanned to determine the problem
Where is the relay for the heater fan on a 2002 Chevy Trailblazer?
The 2002 Chevrolet trailblazer heater fan relay switch is located behind the dashboard. The relay switch will be on the drivers side of the vehicle.
How do you install an in dash tv in a 2004 Chevy Trailblazer?
A double din unit will fit in the Trailblazer/Envoy platform vehicle however you will need adapters. If you are experimenting then you are best to let a pro do it.
Does my trailblazer have a factory amp?
You can determine if your Chevy Trailblazer has a factory amp by checking under the driver's side seat. The original inventory shipped with the vehicle also lists if an amp is installed.
Does the kinetic energy of your vehicle dissipates quickly when the vehicle is in a crash?
It just depends on how quickly it stops. In some crashes the vehicle may go on out of control for some distance, in head-on crashes it will stop very quickly
Does 2004 Trailblazer have orifice tube or expansion valve?
Yes. Otherwise you wouldnt have air conditioning in your vehicle.
