2008 GMC Envoy engine problems

Filed Mar 8, 2015 · Engine, Transmission · 172,000 miles · NC

Check engine light is on. According to tests it is the result of a defective throttle position sensor. The light will stay on for a couple of days and then go off for a couple of days creating a error message that something is wrong with the engine. With it going on and coming off it is now difficult for me to get my inspection completed with the sensor reading not being accurate.

Filed Sep 16, 2014 · Engine · 118,106 miles · WA

Gmc used cheap bolts on their v8 motor's exhaust manifolds. I have two broken bolts on one side and 1 on the other. Carr of vancouver gave me a quote of $ 2374.00 plus tax to fix this problem. They said it was a well known problem with all of the v8 motors by gmc. I contacted gmc and they refuse to do anything about this. I have researched it on the internet and there are hundreds of people who have had this same problem. The question isn't if this will happen to one of their vehicles but when it will happen. It is such a wide and known problem a company has actually made came out with a bracket to fix this problem. I don't feel that this should be a consumer problem but it should be a manufacturer problem. I would appreciate any help. I feel that they should have to recall these defective bolts and replace them with the right ones. I am not out for any kind of settlement or scam all I want is my envoy fixed. Kral auto parts makes the bracket. Https://www.kralautoparts.com.

Filed Jun 8, 2014 · Engine · 101,960 miles · PA

Our 2008 gmc envoy kept on getting louder and louder as time went on and when I went to check it out I found that the exhaust manifold had a crack in it about 3.5 inches long. If feel that this should be a recall do to I changed 3 od them in other gmc envoys in the last 6 months. I own a state inspection repair garage in pennsylvania.this is a very poor layout by gm. Also the secondary air pump on this same vehicle is a command problem. And the wiper spray nozzle is also another command poor design.

Filed May 23, 2014 · Engine · CA

The vehicle rear air compressor air deflates over night or after sitting for a while. Air compressor.

Filed Sep 18, 2013 · Engine · 94,000 miles · CA

I started my vehicle in the am and it made a loud muffled noise. Took it to the mechanic and he showed me a picture of a crack in th exhaust manifold. I looked online and saw recalls for other years and models for gmc and chevy. I think the 2008 chevy envoy should be included. It seems to be that the manifold is defective.

Filed Feb 19, 2013 · Engine · 72,000 miles · OH

Tl* the contact owns a 2008 gmc envoy. The contact stated that the vehicle stalled. The vehicle was taken to the dealer, who advised the contact that because the air pump was located under the vehicle, it was left exposed to debris, which had built up in the air pump over time. The vehicle was not repaired. The contact called the manufacturer and filed a complaint. The failure mileage was 72,000.

Filed Feb 10, 2013 · Engine, Transmission · 47,000 miles · OH

I started my vehicle on monday morning and it was unusually loud. After inspection, I found my manifold was cracked.

Filed Nov 13, 2012 · Engine · 59,000 miles · NY

Tl* the contact owns a 2008 gmc envoy. The contact stated that the check engine warning lamp illuminated on the instrument panel. The vehicle was taken to the dealer and they stated that the seal that was on top of the fire wall was damaged. As a result, the water was sipping into the engine compartment and was getting on the coil packs and the plugs. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 59,000. The VIN was unavailable.

Filed Sep 26, 2010 · Engine · 51,000 miles · WV

2008 gmc envoy 51,000 miles exhaust manifold cracked I had it replaced and was told by dealer a 3 day wait would be necessary as they had used stock parts on another envoy with same problem . Advised me not to drive because it may catch fire.

Filed Aug 16, 2010 · Engine · 87,000 miles · 00

Bought the vehicle last november from georgian pontiac buick gmc in barrie ontario canada last november 2009. Learned I had a cracked exhaust manifold on my 2008 envoy at 87 000 km. It has not yet been repaired. Research is ongoing.