Question about 2003 GMC Envoy

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Reset computer GMC Envoy 2003 - 2003 GMC Envoy

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: How to replace the headlights on my 2003 GMC envoy.

The headlights on the envoy are the easiest parts of the car to repair. You just pull the two tabs at the top of the headlights, screw out the bulb containers and you are good to go

Posted on Nov 15, 2008

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  • 341 Answers

SOURCE: engine reset light on 2003 gmc envoy

The service engine light you refer to is telling you you have a problem with the computerrized engine control of the car.When the light comes the computer stores a numerical code that can be retrieved with a scan tool or code reader.If you are not experienced with diagnostics you need to take the car to a mechanic,because sometimes a code can fool you and you can change a good part.An example of this would be reading a code that the oxygen sensor is reading a lean condition setting the light on. but the real issue is a bad fuel pump not supplying enough fuel to the engine. On the code alone you would be inclined to change the sensor when it was not the problem.

Posted on Nov 26, 2008

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SOURCE: how do you change brakes on a 2003 gmc envoy

don't need any special tools, standard sockets sets, "C" clams is a must unless your a He-Man and wrench set, plyer or needle nose will do. I assumed being 2003 your rotor never have been turn and i recommend every time you change your bakes is good idea to have your rotor turn. reason is it will make your pad last lot longer, removed any vibration and better even wear on the pad and eliminate any squealing although is not necessary to do so. make sure you get extra break fluid to bleed the brakes. get your self 5 feet long smallest vacum rubber hoses and a glass jar to bleed your brake fluid in. the rubber vacum hose you going to use to fit on to the bleeding nipple and run the other end of line to your the glass jar to save the brake fluid when you bleed the brakes. when removing caliper, check inspect make sure the rubber seals around your piston look good and not crack or deteriorated. before applying new pad make sure you open the bleed valve to reduce the pressure by turning the bleed nipple counter clockwise and leave it open attach that rubber hoses to the nipple because you going to press on the piston back into it housing with the "C" clamp in order for new pad to fit. becareful not to damage the rubber seals around the piston. its going to take lots of effort to push that piston back in so be a bare with it if needs to. once the pad is back in make sure you keep the reservoir full with brake fluid and then bleed the brake. two people is a good idea to do brake. one will do the pumping the brake and holding it down and other will bleed the nipple. I bleed it 2-3 time will do the job. good luck!

Posted on Jul 17, 2009

c17hydro
  • 2984 Answers

SOURCE: GMC Envoy w/ code P0128

Start at $89 right off the bat just for diagnostics and then depending on what they find that is causing that fault, at LEAST one hour labor, plus parts....I would say $250 is a good ballpark figure....looking up your fault code now.

Posted on Aug 28, 2009

johnjohn2
  • 5763 Answers

SOURCE: where is coolant temp sensor located on 2003 gmc

heres a diagram to show you where the coolant temp sensor is located, its behind the alternator on the left side (driverside),the sensor just unplug the connector and then unscrew it and out it comes.

Posted on Jun 21, 2010

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1 Answer

How to reset 03 gmc envoy computer


dis-connect both battery cables from the battery.
Touch them together and re-connect them to the battery.
remember disconnect both, don't be lazy and only disconnect one.

May 27, 2015 | 2003 GMC Envoy

1 Answer

Idle control on 2003 GMC Envoy SLT


There is no idle adjustment on these vehicles, it is controlled by the computer.
You probably need to have the throttle body cleaned, make sure it is cleaned on the front side and back side. And the battery should be disconnected while the cleaning is done, this will reset the computer.

Aug 25, 2012 | 2003 GMC Envoy

1 Answer

My 2003 GMC envoy 6cyl wants to die when i turn ac or heater on


The throttle body needs to be cleaned, make sure to clean both the front side and back side, this means that the throttle body needs to be removed from the intake. Also, disconnect the battery while cleaning, this will reset the computer and allow it to relearn to the cleaned throttle body.

Oct 09, 2011 | 2003 GMC Envoy

1 Answer

HOW MANY MILES DOES IT TAKE TO RESET MY GMC ENVOY 2003


It's not a matter of miles, but the number of drive cycles. Each drive cycle includes low and high speed driving, and I think there are 10 drive cycles required.

Aug 11, 2011 | 2003 GMC Envoy

1 Answer

The reduced engine power light has been coming on in my 2003 Envoy


1st things first, clean your throttle body with throttle body cleaner. Clean it with the battery disconnected. When finished, drive around for 5 or so miles to reset the computer. The butterfly in throttle body is probably sticking. The throttle body must be nice and shiny when finished.

Jan 12, 2011 | 2003 GMC Envoy

2 Answers

2003 gmc envoy!!! Need help asap! For the last


Ask a garage to reset your computer, could be a recurring trip fault causing the car to shut down.

Clearing it might solve the problem - if not, the fault codes will tell you what the problem is!

Apr 30, 2010 | 2003 GMC Envoy

1 Answer

What is the relearn procedure for a 2003 envoy? Envoy has smooth idle until a/c compressor comes on then it stumbles and cuts off. The battery cable was disconnected for about an hour. It has been about 2...


undoing the battery to reset the computer to reset a problem- if the problem wasnt taken care of the problem usually comes back--if it was to reset something like fuel cap the computer needs to go thru multi cycles and or 125 to 150 miles have the truck scanned most auto stores such as auto zone/advanced auto do it for free check ur local area u may have a fault code thats causing problems

Feb 20, 2010 | 2003 GMC Envoy

1 Answer

My 03 Envoy will not idle. Keeps shutting off...


Got a solution for you on this. There is a small sensor, called the MAP sensor.
It is located on the top of the engine. You will see a blue sticker with Delco Motors 5V GND written on it. Has a wiring harness that you can pry up and
pull off. Unplug the wiring harness and plug it back in. You may need to reset the code errors. I had mine at a mechanic, and he did that , reset the code errors and it solved the problem.

Jun 22, 2009 | 2003 GMC Envoy

1 Answer

Reset change oil light in a 2003 GMC Envoy


Do you have a drivers info center or not? let me know and I will tell you how to do it.

May 23, 2009 | 2003 GMC Envoy Xl

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