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GMC Envoy Maintenance and Repairs

67 messages,  Last post on Jul 16, 2008 at 1:22 PM

You are in the GMC Envoy Forum. Your Hosts are steve_ & tidester

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

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#58 of 67 4 wheel drive by ms512kg Feb 04, 2008 (2:48 pm)
I have and 04 envoy xuv and I've now replaced the front axle acuator twice and the fuel actuator, my 4 wheel drive has never worked! We've had it to the service center about a dozen times for random things. My husbands 99" grand prix runs better and has twice the miles on it.
#59 of 67 radio and climate control issues by rcpd57 Feb 05, 2008 (11:31 pm)
I have a 2005 Envoy Denali XL 4x4. For about the last year when started the radio has no volume at all but the displays on it appear that the radio is working fine. I would turn the radio off and back on and it would work normally. Also at about the same time I developed problems with the climate control system acting like it has a mind of its own but is not in the auto setting. The fan would pick up or drop speed like its in the auto setting but is not. Also it would turn the A/C on by itself especially if I had the interior temp set a slightly lower temp than what is outside. Such as the temp inside set at 68 and it 72 outside and would turn the A/C on by itself. It acts as if the auto setting is on but is not. I had it into the dealer and they advised they could not reproduce the issues long enough to track the problem down. Winter came and the problems became much worse. The radio problem became more frequent and the climate control problems became much worse.   The climate control would get stuck with the vent, heater and defrost all on which there is no setting to have all three on at the same time. The problem became so severe that the dealer finally decided to replace the radio and the "climate control head". When I picked it up from having the new parts put in the new radio didnt even make it long enough for me to get it into drive. The new radio went out completely within 10 seconds after the envoy was started. I brought it back in immediately and they ordered another radio.   While I was waiting for the radio the temps dropped below zero and the climate control system went out again and I had no heat while the temps were below zero but the display showed no problems. When it warmed up the system worked fine without any problems. While driving to the dealer to get the second radio I was watching the climate control display which showed the outside temp was 39. It suddenly blinked and came back on and showed the A/C was now on. Ive been told that the system will not allow the A/C to be turned on when its below 40 degrees outside. I dont know how but the envoy turns the a/c on by itself and at temps it not suppose to do. I left it alone and drove to the dealer for them to see. At the dealer the tech could not get the a/c to turn off. At least on the display it is showing it was on but we did not hear the a/c compressor kicking on . They went ahead and replaced the radio again and then went to check the climate control system but the problem was now gone and couldnt explain what was happening. Well at least this time the repair waited for me to get the envoy into drive. Before I could leave their lot the climate control once again turned the a/c on by itself and me and the service tech could not get it to turn off. After 10 minutes we finally got it to and they said they would order another climate control head for it.   Now the radio is acting up again since the temps have dropped again.....   I have a hard time believing that I could get two bad replacement radios in a row and a bad climate control head all at once. One mechanic I spoke to said its either a short in the wiring causing the issues or its a bad body control module. He feels that both issues are related since they go together when the temps drop. Im concerned about even parking this envoy close to my garage in case it goes up due to short if its that.   Anyone hear of issues like this or have an idea of what is doing this?
#60 of 67 NO AIR MOVEMENT...NOTHING! by maxx13 Feb 13, 2008 (7:51 pm)
I HAVE A 2006. JUST RECENTLY DISCOVERED I HAVE NO HVAC. NO FAN, NO DEFROST, NO AIR, NO HEAT. I ASSUMED IT WAS A FUSE...NOPE. A "FRIEND" SAID IT WAS THE BLOWER MODULE. UNDER HOOD? UNDER REAR SEAT? ANY ADVICE?   THANKS
#61 of 67 Re: GMC Envoy: Problems & Solutions [tidester] by afforte Mar 11, 2008 (7:37 am)
Replying to: tidester (Aug 09, 2006 9:42 pm) On my 2002 XL , the key is stuck in the ignition and the ingition will not start the engine (seems to be a security system issue) nor will it turn backward to the auxiliary/accessory position to come out. Is this a faulty ignition problem or security system disabling the starter and preventing the key from being removed. How is it corrected? Are there any recalls or alerts on this issue? Is it common? How much does it cost be repaired? Thanks, AFF
#62 of 67 Re: Extremely Loud '02 GMC Envoy engine [spammer] by ecolgan Jun 23, 2008 (3:11 pm)
Replying to: spammer (Jul 24, 2007 2:35 pm) most likely your radiator fan is stuck on, that fixed mine.
#63 of 67 sensor location by 91ump Jul 02, 2008 (9:08 am)
i have a 05 envoy. the check engine light came on and i got it checked out. it is the camshaft position sensor. i was wondering if anyone knows where this is located and if anyone has done this replacement? Replies to this message: prostocknova (Jul 16, 2008 1:22 pm)
#64 of 67 4-wheel drive problem by joni0381 Jul 03, 2008 (8:45 pm)
I purchased a 2005 XLT Envoy 2 months ago today. The 1st month the dealership had it 3 out of 4 weeks trying to fix the problems I was having. 1st it was the cluster for the speedometer went out. Twice actually. But that wasn't the main concern. While driving down the road the 4-wheel drive switch will show the vehicle shifting into 4-all wheel from 2HI, and then back to 2HI. You can also feel the vehicle jerk as it is switching over. But, the service department can not seem to find the problem. They have ran the diagnostic test on it several times. I have even tried a different dealership hoping that they could figure out the problem. No one wants to start dumping money into the vehicle to fix the problem since it is still under warranty with the dealership. Has anyone had anything like this happen with theirs???? Replies to this message: kingpin814 (Jul 16, 2008 12:05 pm)
#66 of 67 Re: 4-wheel drive problem [joni0381] by kingpin814 Jul 16, 2008 (12:05 pm)
Replying to: joni0381 (Jul 03, 2008 8:45 pm) I have the same problem with my 2002 Envoy XLT. Would be very interested to find out if you have solved the problem. Nobody can figure this out either. Get back to me if you can.
#67 of 67 Re: sensor location [91ump] by prostocknova Jul 16, 2008 (1:22 pm)
Replying to: 91ump (Jul 02, 2008 9:08 am) Yes i had this same issue my check engine light came on for my 04 GMC Envoy and it was throwing codes for the cam and crank sensor ,i just cleaned them and they worked fine, you can also purchase them at Oreilly Auto parts(Or some other select Parts Houses) they can get them at a great price ,way better than the Dealership. The camshaft Position sensor (CMP) Is located on the front of head, directly above the belt. Small bolt holds it in, and it is a round sensor.Also the camshaft position sensor code may have set because of the low oil pressure to the variable timing system from low oil in the motor. i would start by first clearing all the codes from the system and see if the light comes back on. if the light does come back on, before replacing the cam sensor you will need to follow a diagnostic repair procedure for the code you get. just because the code says cam sensor does not mean that replacing the sensor will fix the problem. you may have electrical or mechanical problem that is causing the ECM to think there is a problem with the cam sensor. Hope This Helps   Alisha

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