Engine Burning Oil problems of the 2007 Chevrolet Avalanche

Vehicle has 120,000 miles on it and has a random misfire, with traction control and stabiltrack warnings and a flashing check engine light. Engine has excessive oil consumption and runs rough. Installed new plugs and wires, no change. After reading up on these engines I found out that the afm / dod feature is a common failure for these engines. Gm should step up and help owners with some of the repair costs. This is going to be expensive.

The vehicle, from the time it was new, had usually consumed about 0. 5 quarts of oil each oil change, which I would consider normal. This condition began to worsen at approximately 60,000 miles to about 1. 0 quarts per oil change. This condition continued to worsen, and at approximately 85,000 miles began to consume 1 quart of oil each 1,500 miles in city driving, and closer to 1,000 miles with significant highway driving. I contacted the dealership regarding this issue, and they replied that this amount of oil consumption would be considered normal. Between 85,000 and 135,000 miles I have replaced spark plugs twice. In each instance the plugs were fouled and wet with oil. The ignition coils were replaced on multiple cylinders at the time of the first spark plug change. As compared to the owners manual, the spark plugs should only require service every 100,000 miles. I have since contacted the dealership regarding this issue, and they continue to reply that the amount of oil consumption I experience is normal. I have owned more than 10 vehicles over the course of +30 years and never had an engine consume oil at this rate. This amount of use is neither normal nor good for the environment.

I bought this truck new and at about 30000 miles it starts to burn oil. About a quart between oil changes. Took to dealer and they replaced lifters. There was no difference. Then did oil consumption test where it got to the point of burning 1quart of oil every 800 miles. Took back in then was told extended warranty will not cover and it is normal wear. Truck at that time only had 73000 miles on it(Aug. 2015). They told me it could be$3600 to repair this issue. I than told them not to touch it and still dealing with issue at 78000 miles.

There have been continual problems with the engine of my truck and I have found out since buying it there are severe problems with a lot of the engines of the 2007 Avalanche. The mechanic told me when we brought the truck in to find out why the engine had a hesitation in it, that we should hope it was the exhaust system seals needing to be replaced that caused the hesitation because the only other times he had seen this problem it was a manufacturing defect in the 2007 GMC engines that he had seen these problems with alot of the 2007 chevy and GMC trucks including his own. We also about 2 months after buying the truck noticed that the truck was going through oil very quickly but the mechanic said that the seals weren't leaking so didn't know why we were burning oil so fast. The dash has cracked at the corner of the air bag and if there is an accident it could send shards flying. The drivers door sticks and the stability control go's in and out of working order. The electric mirrors stopped folding in and tilting down and tried to have it fixed but Chevrolet said they wouldn't give the mechanic the code to get into the computer system to fix it and the back up sensor that had stopped working also. We now have to go to a Chevrolet dealership to have it fixed. There have been so many problems with these trucks that Chevrolet hasn't fixed these trucks even used usually cost at least $15000 brand new you could double or triple that price I don't think it's a lot to ask to have a decent engine the other problems I could deal with but the engine problem they should fix.

This vehicle has had oil consumption problems since purchased. It runs out of oil 1500 miles after an oil change. Several consumer complaints have proved this is a very common problem and suggested reporting it to the epa. My truck now needs a new engine because of this common defect with the afm and bad lifters in the 2007 Chevrolet Avalanches. It is completely abnormal for an engine to burn this much oil into the environment. Not to mention the consumers who are now being forced to replace engines due to this problem. It needs to be fixed.

My main concern is the fact that the vehicle burns excessive amounts of oil. I have lodged about five complaints with ourisman rockmont Chevrolet and my concerns remained unadressed. They did, on one occasion, change a gasket cover and oil pan gasket, but the problem persisted. Finally, I was recently told that I needed an oil deflector per a service bulletin and was told it would cost nearly $1,500. 00. Although my concerns were all made during the warranty period, ourisman is attempting to charge me now that my vehicle is outside the warranty. I contacted chevy customer service but no luck.