Relay is stuck or the head light switch itself is bad
SOURCE: wiring diagram or fuse box diagram-2007 GMC Envoy Denali
Hi there;
Here is the wiring diagram for the trailer wiring for your truck.
Hope this helps
Farrout!
SOURCE: 2007 envoy denali stabilitrak turns
Hi.
There are many possible reasons while the car will shut down at cold , or when idling or slow.
A good thing to do would be going to the nearest Autozone and doing an error code scanning on the engine. This is free of charge, and will tell you if there is any error codes stored in the car computer.
I will try to summarize possible causes for your problem. I will list only common faults that can cause the car shutting down when you press the pedal after idling.
Air flow problems:
This commonly affect the engine when this is cold.
Check air filter, air intake, MAF (mass airflow) and IAT (intake air temperature). This problems are more noticeable when the engine is cold.
Vacuum problems:
The vacuum system uses recirculated gases in your engine. A vacuum leak or a bad EGR valve can give you troubles, particularly when idling. Vacuum system is tested using an hand tool gauge.
Injection and fuel system:
A malfunctioning fuel pump, a clogged fuel line, or an injector problem may be causing the fault. Pump and lines are tested using the same hand gauge used on vacuum system
Distribution and spark plugs:
If this is the problem, then the engine is shutting down because of misfire. You will get engine warning light on, and the misfire will be reported after doing an error code scanning. When you have distributions problems you can also easily feel that the engine is not running as it should.
Transmission problems.
An automatic transmission malfunction can cause the engine to shut down when you push the pedal. When this is the problem you realize that the cause is the transmission, and that the wrong gear is on.
Other electronic troubles (ECU , wiring, etc)
The best thing to do is trying to understand in what of the condition above you may be, eventually stop at the nearest Autozone and ask a free OBDII scan, or come back to us with a more detailed description of your problem symptoms. OBDII scan can also be done using an hand tester.
Regards.
SOURCE: Where is the fuel fillter on my 2007 GMC Envoy
Hello f poll: My name is Roger and I will help you. There is no fuel filter that you can easily get to. GM did not install a replaceable filter. The only filter for your GMC is located inside the fuel tank. To replace it would require removal of the fuel tank. What that means is this. When you replace the fuel pump you will replace the filter at the same time. The pump and the filter are a module unit. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger
SOURCE: What tools will I need to replace serpentine belt
Should be a square 3/8" hole in the tensioner. There you can insert a 3/8" extention, and connect a breaker bar. Turn it to take the pressure off the belt and remove.
well I will tell you my problem it maybe the same happening to you, every time I park the car for more than 4 hours it will lower the rear and after I start it will go to normal high, well the car have a air leak on one of the air bags in the rear, the compressor was pumping air almost all the time because of that to the point that one time just stop working. I have to buy new air compressor and 2 air bags. I bought them at www.arnottindustries.com not difficult to replace either.
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