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GMC Envoy Maintenance and Repairs

95 messages,  Last post on Nov 15, 2009 at 7:14 PM

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What is this discussion about? GMC Envoy XUV, GMC Envoy XL, SUV

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#85 of 95 2004 envoy xuv fuel problem? by courtmays Sep 08, 2009 (2:27 pm)
My husbands envoy is having an issue when I go to fill up the gas tank and put gas in it, i get back in the truck to start it and it won't start it just cranks i have to pump the gas peddle to start it. The speedometer isnt working anymore. Also when i finish driving it and park it as soon as i turn it off and pull key out the truck is still running, idles hard then finally shuts off. pleaSE help me out what could be wrong and how much is it going to cost me?
#86 of 95 To courtmays ::: Envoy problem by gene37 Sep 08, 2009 (6:47 pm)
Ma'am: Your Envoy (and mine) have over 20 different microswitch modules in them, many in the ignition system. Perhaps someone more familiar with them than I can pinpoint your problem, but I am thinking you are going to have to resort to the dealer for a diagnostics check. I am afraid it might be expensive, unless they are lucky in tracing it quickly. One thing you might try before taking it to the dealer is --- put a battery charger on it (be sure to connect to the battery-not the fuse panel, and DO NOT disconnect the battery) and charge it all the way to FULL. Sometimes that will correct any 'reversed polarity that may have occurred. That worked to repair my radio. My 2005 XUV is now working great. Gene C. Replies to this message: courtmays (Sep 09, 2009 8:15 am)
#87 of 95 Re: To courtmays ::: Envoy problem [gene37] by courtmays Sep 09, 2009 (8:15 am)
Replying to: gene37 (Sep 08, 2009 6:47 pm) thanks. but i just put a new battery in it. so it is fully charged. one guy said it might be a sensor another guy said it might be a valve that opens up in the tank to release fuel to the engine. he said it might be stuck and wouldn't be a problem to fix except for the fact they would have to drop the fuel tank.
#88 of 95 2002 envoy blows cold air only to passenger Side by wkas10 Oct 01, 2009 (7:05 am)
Sounds like post #80 - but backwards--> I get hot air on drivers side and only cold on pass side when set to heat-I have the fancy dual electroniic climate controlThe AC works fine on both sides (cold)- Any ideas for starters-Is this my climate control box?
#89 of 95 Re: 2004 Envoy XUV Swing gate problems by pocket Oct 10, 2009 (5:42 pm)
Ok, here goes. I have a 2004 Envoy XUV, and have replaced the swing gate latches on the left side about 6 times in the last year. The first set I purchased, and GM has replaced the other 5 under their parts warranty, which by the way is 1 year or 12000 miles whichever comes first. And the warranty if from the original date of purchase, and not on the subsequent parts that are replaced. Any way the latches have failed again. Anyone have any suggestions on this. Also, I replaced the battery in the vehicle, and now the Onstar has quit working, the vehicle says, "Phone unavailable". And it does it when the ignition switch is turned on, the hood or any door is opened, and it wont quit. Any suggestions on this also? I am a pretty good mechanic, and can handle most things, but this is driving me nuts. Replies to this message: gene37 (Oct 10, 2009 8:29 pm)
#90 of 95 Re: 2004 Envoy XUV Swing gate problems [pocket] by gene37 Oct 10, 2009 (8:29 pm)
Replying to: pocket (Oct 10, 2009 5:42 pm) I have a 2005 XUV. So far, no gate latch problem; so cannot help you there. Did the Onstar problem happen as soon as you replaced battery? Disconnecting or replacing batteries in those vehicles seems to be plagued with problems. You likely reversed the polarity of one of the 30 or so electronic modules. When I disconnected the battery in the 2005, the radio quit. The Dealer said he could not reprogram it, and I would have to buy a new radio at $800. Instead, I took it home, disconnected the battery again, charged it to "Full" after re-connecting, and the radio came on. Make sure you charge on the battery positive pole and the main engine ground, NOT the fuse box poles. Might or might not help. My dim lights (not damn lights) just went out this week. May be one of those modules or just a switch - no time to check yet.
#91 of 95 Re: transfer case control module [carsinvt] by gm59 Oct 17, 2009 (5:35 am)
Replying to: carsinvt (Dec 14, 2006 6:04 am) The same thing just happened to my 2004 envoy. Please let me know if you have resolved your issue. Thank You
#92 of 95 Re: XUV roof and rear window problems [jilssk9s] by tman70043 Oct 21, 2009 (9:41 am)
Replying to: jilssk9s (Jan 27, 2009 4:35 pm) I still havent fixed mine. Did you? If so can you tell me the fix, or how much it costs, what was wrong and had to be replaced.....THANKS!
#93 of 95 RE: Swing gate problems (gene37) by pocket Nov 13, 2009 (10:09 pm)
Thanks for the advise, will try that and see what happens, will let you know. Also I now have a problem with the oil pressure gauge. It seems like it has a mind of its own. Sometimes it acts normally, and other times it reads anywhere from 40 to 80 psi. I think it is the ISP module, and someone in here said that they bought one from Ebay, and was fairly easy to install. If you can, please let me know the area of ebay that you found this. Any help would be appreciated. Replies to this message: gene37 (Nov 14, 2009 2:37 pm)
#94 of 95 RE: Swing gate problems (gene37) [pocket] by gene37 Nov 14, 2009 (2:37 pm)
Replying to: pocket (Nov 13, 2009 10:09 pm) Ouch! Varying oil pressure could be a lot of things (low oil level, bad pump, bad oil filter, clogged line, bad ring(s), manifold leak into oil pan, module, gauge, etc.) Hate to mention it, but you may have to throw in the towel and visit your dealer on that one. On Ebay, best bet is to go to Ebay site map (or Google), and 'search' for item, bypassing the category. Use as few words as possible such as (Envoy module, Envoy ISP, Envoy oil pressure, etc.) + 'Search'. Good Luck.   MY RECENT PROBLEMS: DIM LIGHTS QUIT. FOUND FUSE MISSING (ONE NOT IN EITHER FUSE BOXES, BUT ON THE LIGHT MODULE). THE "MISSING" BIT IS STILL A MYSTERY.

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