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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
54,695 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Chevrolet Avalanche engine problems

engine problem

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2008 Chevrolet Avalanche Owner Comments

problem #6

May 092013


  • 43,000 miles


The contact owns a 2008 Chevrolet Avalanche 1500. While driving approximately 30 mph, the check engine warning light illuminated and the vehicle stalled. The vehicle was taken to the dealer multiple times over a span of three years where it was diagnosed that the throttle position sensor and the program sensor kit needed to replaced. The contact also stated that the ls valve cover, number one plug, cylinder head, piston rings, and a deflector needed to be replaced. The vehicle was repaired and an oil consumption test was performed over a six month period. In addition, the engine was flushed; however, the failure recurred. The manufacturer was notified of the failures. The failure mileage was 43,000.

- Pitsburgh, PA, USA

problem #5

Jan 012016


  • miles
Excessive oil consumption. It the 5.3L with active fuel management system. GM knowns there is a problem and the only fix is to replace the rings and pistons or replace the entire engine at the owners expense, $5,000 - $8,000. Since it's it's a design flaw, I feel they should fix it at no cost. It consumes over quart and a half per 1000 miles, both highway and city and at times 2 quarts with pulling heavy loads. I have done a oil consumption test with the dealer and they have admitted it goes through a lot of oil. I bought the truck used, and the dealer who sold it to me never mentioned this truck could have this problem.

- Desmoines, WA, USA

problem #4

Dec 152014


  • 143,000 miles
The contact owns a 2008 Chevrolet Avalanche. While driving approximately 55 mph, the vehicle lost power without warning. The vehicle was pulled to the side of the road, turned off, and was restarted after a few minutes. The vehicle was taken to an independent mechanic who diagnosed and replaced the oil pressure sensor and the oil screen. The failure recurred and the vehicle was taken back to the mechanic who replaced the oil pump and advised the contact not to waste any more money on the vehicle. The manufacturer was notified of the failure and recommended a diagnostic evaluation of the vehicle and also stated that the vehicle was out of warranty. The vehicle was not repaired. The failure mileage was 143,000. The VIN was not provided. The consumer stated the issue was the malfunction of the active fuel management system and/or the valve lifter oil manifold assembly on the general motor's 5.3 litre engine from 2007-2010. The vlom was bolted to the top of the engine valley, below the intake manifold assembly. The vlom consisted of four electrically operated normally closed solenoids. Each solenoid controlled the application of engine oil pressure on the intake and exhaust valve filters on the cylinders selected to deactivate. When the assembly fails, oil is not distributed properly through chambers. The consumer experienced reduced power in the middle of the freeway after receiving a no oil pressure alert on the dashboard. The vehicle was towed to a repair shop, where it was recommended the engine be replaced. Updated 12/07/15.

- Missouri City, TX, USA

problem #3

Apr 102013


  • 73,000 miles


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.

- Ravenna, OH, USA

problem #2

May 082012

Avalanche 8-cyl

  • 69,169 miles
Excessive oil consumption. Initial problem occurred on February 11, 2014 and GM dealer did some initial work, but the problem was not fixed. On April 27, the engine began running very, very rough and several lights came on (engine light, traction light, stabilitrac light and there may have been others). I immediately pulled over, checked the oil level found it was 1.5 quarts low, so I added oil and started engine again. So I had vehicle towed to my GM dealer. The next week, the dealer said they were looking into the problem. Finally the week of May 5, they said they would need to replace pistons, rings, lifters and I don't remember the entire list. I asked what was this going to cost and who would be paying for the work. Service manager told me the total would be in the $4500 range, but he would check with GM to see if they would pay part of this. Next day service manager said GM would pay for all except a $500 "warranty deductible". my receipt shows they replaced one piston, the camshaft, 16 lifters, lifter guides, the manifold, a sensor, 8 spark plugs, added 6 quarts oil, installed oil filter, recharged A/C system and charged for numerous gaskets, nuts and bolts. The dealer told me that the reason for the problem was due to the fact that my engine was made in Mexico. They said they used parts manufactured in Canada on my repair work. I have read on the internet that this excessive oil consumption problem with this engine is not new - it has been reported to GM for several years. Why didn't GM stop using engines manufactured in Mexico before 2008 if in fact this is the main reason for this problem. They should have been proactive to prevent this widespread problem and causing their customers to pay needlessly for repairs that GM should have paid for in total - or replaced this engine totally!

- Seymour, TN, USA

problem #1

Mar 042014

Avalanche 8-cyl

  • miles
There is an issue with moisture. First incident occurred in snow. Traveling around 55 mph when I hit a patch of snow on the road and the truck stalled. At that time, I also lost steering ability and braking ability. Truck would not start. Towed to mechanic. Real issue never found. Basically dried out and started again (2) days. Second incident happened during rain. Went through a small puddle at 40 mph and had the same issue. Towed again and started right up the next day. Third incident happened last night, April 25, 2013 while driving home in a driving rain storm. Did not hit any water just stalled on it's own. Again, stalled and would not start. Towed for a third time. Talked to Chevrolet this morning they said there were no recalls for the issue but I have checked online on several different forums and it seem to be a problem for many folks.

- Millington, TN, USA

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