Print this page Notes: Engines shouldn't need a new quart of oil every 500-1000 miles, but for thousands of Suburban owners that's exactly what's happening. Engine oil consumption on aluminum block engines with Active Fuel Management (AFM) is out of control and owners are left looking for answers.

The most likely culprit is an uncovered AFM valve which, in many cases, can be covered under warranty. The problem is the issues don't stop there and many owners have been told by GM just to buy a new engine. Take one guess who they want to pick up the tab.


really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
59,963 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.

2007 Chevrolet Suburban engine problems

engine problem

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2007 Chevrolet Suburban Owner Comments

problem #9

Mar 032008


  • 10,000 miles


Like to place a formal complaint regarding the oil consumption for 2007 Chevy Suburban and the horrible quality of vehicle. A few months after purchasing the vehicle the transmission gave out. I've been having problems with oil consumption and its horrible. I believe that Chevy should stand behind their product and do a massive recalls for these vehicle. Again, Chevy should stand behind their product. There are so many reviews about this same problem. Obvious there is a problem. Will never buy a Chevy again nor will I recommend Chevy vehicles!!

- Maxwell, TX, USA

problem #8

May 242013

Suburban 8-cyl

  • 121,000 miles
Oil consumption - after advising terry labonte Chevrolet (greensboro, nc) of oil consumption issues from 60K thru 99K and former diagnostics completed by collins Chevrolet (mt. Airy, nc) @ 55K 59K & 60K GM is unwilling to make repair under warranty at 121K stating that no notes were recorded of incidents upon prior notification. Dealership stated repair require piston rebuild for $5100 GM rep approved repair for $1365. GM cust care unwilling to cover repair and has disregarded prior documentation of complaint at 55K, 59K, & 60K. Dealership are aware of problematic 5.3 stating upon description of issue without review of records that vehicle is 07.

- Greensboro, NC, USA

problem #7

Sep 212011


  • 47,500 miles
I purchased my Suburban with existing GM warranty. The vehicle had roughly 47,000 miles on it and 7 months remaining of the original factory warranty. After about 900 miles the low oil light came on, which I thought was odd because I checked the oil life gauge after purchase and it said it was at 99% oil life. This worried me. It was one quart low so I added it and decided to see what happens. A month later at about 1000 miles the same thing happened. I added another quart and then went to the dealer closest to my home to report the issue. They started monitoring. Each time at between 900 and 1400 the oil light came on and I was a quart low. They began remediation. First the pvc/valve cover remediation. This did not solve the problem. Then next the oil pan related remediation. This did not solve the issue either. Now I keep having to take the Suburban to the dealer when the oil light comes on, they add a quart and say there is nothing they can do, from a legal stand point because I have an extended warranty and the car is out of GM warranty (remember I reported this while it was under GM warranty and reminded them of that), that GM won't do anything more from their experience with this issue. However, they have not contacted GM or opened a case file and wont do that. I was told I will need to pursue that on my own. They tried to reach out to my extended warranty but say they are put on hold for 10-15 minutes and have to hang up because they are too busy to wait longer. I've called them repeatedly asking that a case be opened with GM as this was reported under warranty and is a known defect with this engine (I'm out of warranty now) but they just keep giving me the run around. GM needs to do a recall and address these engines.

- Auburn, NH, USA

problem #6

Nov 192008


  • 42,000 miles


Since 2008 our Suburban has required oil servicing on average every 2 months. We took it to many dealers and was told we needed to be able to track the consumption somehow. I stated, can't you check when the oil servicing light comes on and was told no. Don't know why it consumes so much oil and it's not leaking.

- Lincoln , CA, USA

problem #5

Nov 112010


  • 63,000 miles
The contact owns a 2007 Chevrolet Suburban. The contact stated that the vehicle would consume up to three quarts of oil every three thousand miles. The contact stated the vehicle has not suffered any damages due to the excessive oil consumption. The contact took the vehicle to the dealer to diagnose the oil problem where the dealer advised that they would replace the pistons and piston rings. The contact stated that the repair possibly would not remedy the issue of the oil consumption. The failure mileage was 63,000. The VIN was not available.

- Westchester, OH, USA

problem #4

Nov 152009


  • 80,000 miles
The contact owns a 2007 Chevrolet Suburban. The contact stated that the check engine light illuminated. The contact was informed that there was a leak and the evaporation vent and filter needed to be replaced. The vehicle was repaired. The vehicle began burning oil and the contact had to refill the oil every ten days. The contact called the manufacturer who offered no assistance. The vehicle had not been repaired. The failure mileage was approximately 80,000 and the current mileage was approximately 106,000.

- Zebulon, NC, USA

problem #3

Nov 012009


  • 60,000 miles


Vehicle is burning approximately 1 quart of oil every 1,000 miles.

- Street, MD, USA

problem #2

May 282010


  • 81,171 miles
Engine started idling rough and the 'engine light' came on and stayed on.then the next day, went to start car and it was really idling rough, sputtering, then stablitrak light and 'traction control off' light and ABS lights all came on. The car felt like it was going to die until about 20 mph, then made a jerking motion and ran fine. This continued to happen until I took it to the shop. They kept it for a week, replaced the fuel pump, but this did not fix the problem. The car still runs rough and the lights still come on whenever I have to idle, intersections, etc... I have been reading and I am concerned that there is no fix for this problem. I believe it is a faulty engine/electrical issue and there needs to be a recall. This is completely dangerous, if my stabilitrak system goes off and I am on unstable ground, rain, snow, etc... it will cause my car to brake and I will loose control of my car. I am worried that it is going to die in an intersection, since it has a hard time coming out of an idle with any power.

- Queen Creek, AZ, USA

problem #1

Dec 092008


  • 35,000 miles
In Oct. 2007 I purchased a brand new 2007 Chevrolet Suburban from gordon Chevrolet in tampa Florida, it had 20 miles on it. On December 9th 2008 while on my way home from work, at approximately 12:45 am, it exploded and was engulfed in flames. I received 2nd and 3rd degree burns and waited on the side of the road for close to 30 minutes for help to arrive. The Suburban had absolutely no aftermarket changes or any type of modifications done to it. All of its servicing and repair work was done at cox Chevrolet in bradenton Florida, a General Motors dealership. The truck had just over 35,000 miles on it and is now just a burnt out shell. During the 1 year and 2 months I owned it, I had several problems with it and took it to the servicing dealership for all the problems. My attorney and my insurance agent think it was a defect in the manufacturing or a defect in the repair. An official cause has yet to be determined and because of GM's going bankrupt they are not interested.

- Parrish, FL, USA

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