Chevrolet Avalanche oil consumption problems

Filed Dec 11, 2020 · Engine · 142,255 miles · MN

I have a 2008 chevy avalanche ltz with the 5.3l v8 engine with adaptive fuel managment. It was purchased used with 120k miles. It became apparent that the engine was consuming oil, 1-2 quarts per 3000 miles. Recently the engine started producing white/blue smoke on start up and oil consumption increased to 2-3 quarts in 1500 miles. My vehicle is currently at a mechanics shop and I am told that for starters I will need new valve covers that are redesigned from the original ones and that excessive oil consumption is common on this engine. I have read of other owners that have had to have pistons/rings, valve covers replaced, and a baffle placed into the oil pan to mitigate the oil consumption. This seems to be a fairly common occurrence that isn't a typical maintenance issues since these parts weren't oem when the vehicle was made. It seems unacceptable to have to have oem modifications completed out of my pocket for something that seems to be identified as an issue with specific parts made to mitigate the issue. I am very concerned what this acceptable oil consumption will mean for the longevity of my engine.

Filed Jun 15, 2020 · Driver assistance, Engine · 120,000 miles · MI

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.

Filed Mar 5, 2020 · Engine · WV

My 2012 chevrolet avalanche 5.3l engine has started a oil consumption loss. There was a service bulletin issued oct. 30th 2013 to correct this problem. It does not fix the problem! What I've read is that where the cylinders deactivate to help fuel economy after time those pistons get damaged from not having fuel or fire on them and itdamages pistons and causes oil consumption. In the past few days I have found out that there are 5 people I know with the same issue. Looking on line there appears to be class action law suits all across the country on this issue. Gm/chevrolet know they have a problem but refuse to take care of this problem. There is no recall on this and I'm sure never will be because it happens when the engines reach higher mileage. I have all my maintenance records on my truck and had no intention of trading it, but now the motor will have to be rebuilt or replace.

Filed Apr 24, 2019 · Airbags · AL

Takata recall and oil consumption

Filed Aug 7, 2018 · Acceleration, Driver assistance · 110,000 miles · MA

Stabilitrak and traction control lights keep coming on and check engine light. Loses power and stability while going uphill or accelerating. Gm service out of warranty. Looked at possible recalls none available. Noticed alot of issues regarding 5.3 v8 from 2010 to 2013 gm models. Excessive oil consumption also. Do I just pay for a new engine or is anyone doing anything about this oversight by gm? Thousands of complaints but no accountability.

Filed Aug 14, 2016 · Engine · NY

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.

Filed Mar 31, 2016 · Engine · 181,000 miles · MN

At 40000 we noticed we were having issues with my avalanche burning oil, when we asked the tech at chevy he told me that was normal for the newer engines to burn oil, at 130,000 mile we started having problem with a spark plug fouling out, I read that this was directly related to the oil consumption problem. At 181,000 mile and only four years old we had to replace the engine after replacing the spark plug and wire 3 times this cost us $6847. I have read this is a constant problem with the 5.3 engines and could cause4 major accidents if the end up on a highway when they finally go out

Filed Oct 22, 2015 · Driver assistance, Engine · 174,000 miles · VA

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

Filed Nov 20, 2014 · Driver assistance, Engine · 39,140 miles · MD

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.

Filed Jun 30, 2014 · Engine, Transmission · 73,000 miles · OH

At 73000 miles transmission broke just a few months out of warranty. Also started experiencing excessive oil consumption and noisy engine. Have heard and read too many reports of people with the 5.3 liter having major mechanical problems I.e. Camshaft lifters piston rings and valves all going bad.