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08-18-2010, 02:12 PM | #1 | |
AF Newbie
Join Date: Aug 2010
Location: Tampa, Florida
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Is my Envoy possessed?
I sure hope someone out there can help! I have had my 2004 Envoy XL for almost 2 years I have put over 40,000 miles on it since I purchased it. This truck is a mess, it has intermittent problems that all seem electrical.
Issues: won't start (dead battery) A/C won't blow cold HVAC stays on when car is off Radio won't come on tail gate won't unlock drivers side keyless entry won't work rear windshield wiper won't come on lights won't come on all gauges are inaccurate (no gas when gas, 120mph when im going 30mph) check engine light on and off Rear AC controls no longer work at all and half dash lights aren't working If I disconnect my battery and then reconnect when i'm ready to drive everything is fine, this also turns off HVAC, but even removing fuses wasn't helping.. we checked all the relays and fuses.. nothing is bad I have replaced the battery twice, my alternator tests fine, half the time when I take it to get it checked out there are no codes or no codes specific. I have heard a lot about the BCM, but have also heard about a grounding issue. Any suggestions? Im a single mom and don't have the money to waste to take it to the dealer if it is something I could have done by a friend.. PLEASE HELP!!! |
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08-18-2010, 07:14 PM | #2 | |
A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
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Re: Is my Envoy possessed?
Unless your friend is intimately familiar with the electronics in this truck you need the dealer to get involved, there and many and seperate causes for some of the problems, speedo head needs repair, possible ign switch, possible bcm issues, the codes and history need to be read and so on.
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12-29-2010, 06:02 PM | #3 | |
AF Newbie
Join Date: Dec 2010
Location: port hope
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Re: Is my Envoy possessed?
Hi would like to tell you what worked for me the rear latch harness that passes from the body to the lift gate can wear the wires thru this can be noticed underneath the headliner the wire that had worn thru on mine was live all the time resulting in a battery drain.the wire goes to the rear gate module which controls the rear wiper ,fobs ,rear hatch lock and defogger
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12-29-2010, 06:07 PM | #4 | |
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Re: Is my Envoy possessed?
also note it may have damaged my rear hatch module I am going to see if they can reprogram this module I might have to install a new one and have it programed in
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12-30-2010, 10:05 PM | #5 | |
AF Newbie
Join Date: Dec 2010
Location: port hope
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Re: Is my Envoy possessed?
Put a new fuse in the #19 rear seat fuse block rear latch module fuse and every thing came back to life front pwr seat , heated seats, rr wipers fobs, and that anyoying clicking from my rr heater . extended version
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