Question about 2003 GMC Envoy

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My 03 envoy has no reverse lights its not the fuse or the relay or bulbs

My truck is going crazy and when i turn on the heater to defrost my front windshild my truck starts to dye then i move it to another setting it runs fine

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  • DAVID KASPER Jan 01, 2013

    thanks benjamin123 but but the problem still there i think it might be a short some were in the wire

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  • 1,311 Answers

As far as the engine wanting to stall when defrost is selected, that's an indication that your throttle body needs to be cleaned. Grime buildup causes the throttle plate to not close completely.
For your reverse lights, this could be caused by the transmission gear select switch or a wiring issue.

Posted on Jan 03, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Why does my heater keep running after I shut my Envoy off?

I have the same problem. I have also been searching the web for a solution. I came across someone saying that it was the heater module located behind the glove department. I can't find now where i read this but it said the part was approx. $150.00. He was having same problem as us, heater wouldn't obey touch commands to turn on/off or when heater did blow it would only blow real low or real high. Like you, after turning off engine blower motor was still running even though it wasn't blowing air out.
I'm tired of paying for things that are not due to normal "wear and tear" on my 2003 Envoy. Let me know if this helps you and how you repaired it. I'll probably have to take mine to the shop but because I'm a "girl" I swear they think I'm crazy with all my Envoy complaints.

Posted on Dec 27, 2008

  • 1 Answer

SOURCE: brake lights/rear turn signals

I had the same problem with my 1999 Yukon. The electric board needed to be replaced. Rust starts to build up and shorts out or blows the bulb. The dealership charged $73.60 for the part and I installed it myself (Saved $30).

Posted on Jan 05, 2009

  • 1 Answer

SOURCE: 2003 GMC Envoy lower 3 heater fan settings quit working.

had same problem on my XUV. changed the blower motor resistor, located under passenger side dash. easy to change, works no problem.

Posted on Feb 17, 2009

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1 Answer

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There is also a relay ! FOG LP fuse # 11 10 amp location , under hood in the engine bay fuse / relay box . FOG LP relay #39 .

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The fog lamp relays are computer controlled , by BCM

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Is the check engine light on ? Usually a solenoid or valve body problem.

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{: ) I wonder how you checked the fuses and the bulbs. Did you check also the HDM fuse 15amp and the HDM relay both at the underhood fuseblock? Turn on the low beam and check for 12v at the LO beam fuses. If there is voltage at the fuses but the low beam ok bulbs won't light, then there's a wiring issue from your fuseblock going to the bulbs.
But if no voltages on the LO fuses when the low beam is switched on, then the problem could be on the HDM fuse or relay, the headlamp switch, the BCM, or even the fuseblock.

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Where is the relay and/or in line fuse for the back up lights on a 2002 GMC Envoy. New bulbs and fuses are fine in both fuse boxes. Still not working so there must be a in line fuse or relay out?


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Jun 27, 2011 | 2002 GMC Envoy

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2003 envoy low beams will not work.fuses good,bulbs good,replcd turn signal assembly,not fixed.no relay in fuse box for low beams.only high beam relay.


For the I6 engine there is a relay for low beams, it's relay # 46. Switch it with relay #45 (runs the fan, same model relay) and see if your lights now come on. These 2 relays are the only 2 black ones in there (part # 15016745). Also, try to clean the contacts very well on the fuse box and the relay. If not, you may have some frayed wiring in the harness.

By the way, the high beam relay is #43, the gray one next to the windshield wiper relay #42.frontfuses.jpg

Feb 20, 2011 | 2003 GMC Envoy

1 Answer

2006 GMC Envoy low beam headlights dont work. All fuses, and bulb filements, are fine.


Hello, try to start by checking the headlight relay and headlight fuse. You also may want to check to make sure the bulbs aren't blown out. If those parts check out to be fine and in working order, you may need to replace the turn signal assembly in the steering column. This part controls the hi/low beams. This may sound crazy but, when GM wired their older trucks, they wired the headlights to go from the battery, to the hi/low beam switch, then to the headlight switch (to the left of the steering wheel) then out to the light bulbs. You can kind of test to see if this part is good by making a fist and (with your headlights on) gently hitting the plastic cover for your steering column that is right behind your actual steering wheel. This could cause your headlights to flicker on and off.

Thanks

Aug 09, 2010 | 2004 GMC Envoy

2 Answers

1993 Dodge Shadow...left turn signal won't flash


If the fuses are good and the front and rear bulbs are good, change the flasher for the turn signals, even tho the right is working. If that doesn't fix the problem, it might be in the turn sgnal switch on the steering column.
If both bulbs are good for the backup lights and fuses are good, then the backup light switch, which is screwed into the side of the transmission has to bad.

Apr 12, 2009 | 1993 Dodge Shadow

2 Answers

Fuse blows when shift in reverse


Am I correct, the turn signal fuse is blowing when you put the manual shifter in reverse?
Let me know.
Regards

Mar 26, 2009 | 1999 Chevrolet Tracker

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