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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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#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.
#95 of 95 Re: Swinggate problems (gene37) by pocket Nov 15, 2009 (7:14 pm)
I have had the oil changed, plus the filter, all the lines check clear, I ran a compression test on all cyls. and they check fine. Ran a pressure test with a mechanical gauge, pressure checks ok, also ran vacuum test on manifold, no leaks found there. The only thing I have not done is to replace the sending unit. I guess that is next, as a new gauge is only available through the dealership. I searched Ebay for an ISP module, none were found anywhere. Spent over an hour searching the site for any Envoy parts. Will continue searching. Thanks for the input.

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