My 2004, GMC Envoy was parked for about eight hours. When I got in to go home, the vehicle would not start. After getting a jump, I went home assuming I would have to jump it again in the morning and purchase a new battery. I was surprised that approximately 10 hours later it started right up! What could have caused this?
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Throttle body has nothing to do with the gasoline, it only regulates incoming air. In order to find the gas leak you will need to remove the air resonator assembly that goes from the air filter to the throttle body. Then you can get a look at the fuel rail and injector hook-ups.
If you live in a very cold region of the world like I do and own a GMC Envoy you will know these vehicles are awful in cold temperatures (-30C and colder). Every winter the vehicle refuses to start, the reduced engine power light turns on and a GMC mechanic gives me a bs excuse for why its not starting. The simple answer is that this vehicle is awful in the cold. When this happens and hopefully it happens at home, I have to get my forced air kerosene heater out,put it under the engine bay of the Envoy, open the hood and tent it with a tarp and let the engine "thaw-out" for about 2 hours, you can also put the vehicle in a heated garage but that takes about 8 hours to thaw that way. There is NO OTHER way to fix this problem. I emailed GM about the problem and their only response was to ask for the VIN number and the name of the 'GM certified' mechanic I was taking the vehicle to. All a load of bs from GM....they know this is a problem and won't do anything to help fix it. My next vehicle will not be a GM while I live in the North Darin
The pressure on the parking pawl in the transmission from the truck being parked on an incline is preventing the pawl from releasing. See if you can get another vehicle to push it a small amount so you can release it from Park position.
Check out this site for the part to fix the transmission end of the cable. Go to the rear end of the transmission on the driver' side (under the car/truck). Make sure to push the transmisssion lever toward the front of the car/truck (park position), the shifter should also be in park. Get the part, install is easy.
sounds like you have a broken shifter cable.Go under the rig and shift the transmision manually.Put on the parking brake and on the drivers side of the trany should be the lever to move.Look for the broken part while you are there it will also help to locate the shift lever on the trany.