GMC Envoy Questions

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I put a code reader on it and it said i wasnt getting power to the port so I checked all my fuses and found one blown. I replaced the fuse and the pedals still wont adjust. I havent hooked the reader up since replacing, but theres no service light on so im not sure it will tell me anything anyway.

the shifter move from park to drive and so on and the key wont come out of the ignition have to disconnet the battery when on off

the shifter move from park to drive and so on without pushing the side button

I replaced the heater core and the air coming from the front vents take way too long to heat up. The air in the rear passenger vents never heat up. Its not my blower motor because the air condition works great. The air blows out really fast and cold, but as soon as I turn the temperature up to 90 degrees the heat kicks in but the air coming out deminishes to almost nothing coming out. I can hear the blower motor running but heat not coming out nearly as fast as AC?

Service 4wd light came on and 4wd will not engage. Had been working just 2 days prior. Replaced Front Axle 4wd Shift Actuator Switch after researching (and it was only $79) but still does not work. Tried pulling #8 fuse and back seat fuse but no success. Indicator lights all blink when car is turned on then stops at 2wd. I think I hear a little vacuum sounding noise when I move switch from 2wd through other positions but they just blink with 2wd on constant. Hope someone can help. Thanks.

It tries to start but wont engage the box under my hood on the motor that has 3 sections has also now developed a clicking sound when trying to turn over but after pump & filter replacement its still not getting fuel with 1/2 tank of gas

The shifter on my truck locked. I found that the linkage cable end had broken off. I replaced it, but I still am unable to shift out of park; and now the key doesn't release. I'm thinking its electrical, but how do I determine which solenoid has gone bad?

Is fuel filter on 2004 Envoy XL an in-tank filter?

Don't smell when vehicle is off, just when running

i checked all the fuses in both fuse boxes could it be a relay or something

my rear lights do not work and i put new light bulbs in and the fuse is fine

The car started to vibrate in idle position neutral not as bad but the vibration in drive is terrible I was told the driveshaft is too short. could this be the cause of the vibration and at 198,000 is it worth replacing it

both 2wd and a4wd work fine and lights for these 2 selections go solid like they there some sensor that detects when the truck is in 4wd and where is it located. maybe it is defective

Yesterday I drove my car till 10 pm, no problem.

I woke up this morning find my 2003 GMC Envoy rear body drop to tire level, what could be the course for that problem

This is the first time to happen

My car won't accelerate when I push the gas,The RPM goes up but the truck coasts along, Could it be the computer or do I need to replace the transmisson? It burns gas when I drive it... it never did that before...

my car has cut off when i turn the defrost on high and it reads car stop check gages. When i turn ac or defrost on the car runs like its in high idle, if i come to a stop sign or red light the car starts to idle and trys to go by itself auto zone code says rich in fuel

i traded my car in for this the guy that sold it to me said the4 wheel drive didnt work .i had someone i know to look at it.they said the front axles are no in it

The light in front work. No back lights. No power locks. No power window. And no dash panel lights are working. But car runs fine.

Almost everytime I start my car the Rpm needle moves up and down quickly and it sounds like I am giving it gas when I am not. What would cause this.

Only happens on the AM side. It has been taken to several places. Unable to find any body that can figure out my problem.

My vehicle has fuel, will crank but not start. I hear the fuel pump kick in when I turn the key. Had the battery checked and ruled out. Is it the fuel filter or fuel pump?

When you start the vehicle there is a loud knocking that goes on for about 1 minute. There is no air coming from the front vents. What is the thing that shifts the vented air around? I wonder if it has somehow become jammed? Air works from floor and windshield vents.

It is running rough, set off warning light code replace MAP Sensor. It says I should try cleaning and replace before replacing the new sensor. I know nothing but neccesity drives the need to learn Help?


I was experiencing the sputtering until I changed the spark plugs and fuel filter, now I am having an issue with stalling especially when the heater is turned on and when in park. What is causing this?

I put gas in the car and it does not register correctly. could this be a sensor problem?


rear air spring is missing bottom support and is not connected to rear axel, when i jacked up rear the right side was just hanging there.

no codes are coming up

the lock tryes to lock makes noise but it don't move,and my wipers don't do any thing. i have change black control box on it and that is not it. could it be the wiper switch?