2008 Chevrolet Suburban Problems

What owners report

Owners of this model year most often write about two things: a dashboard that cracks over time, especially around the passenger airbag and instrument cluster, and door lock actuators that stop working one after another. A smaller but recurring group describes the 5.3L engine using oil between changes, in some cases followed by major engine work. Reports run from under 50,000 miles to well past 150,000.

1. 1
   Body and structure

   Cracked dashboard around airbag and cluster

   • 56 complaints (26%)
   • median 85,000 mi at 7.4 yrs old (35 state mileage)
   • 1 mention a crash, fire or injury
   • filed 2012–2023

   Complaints describe cracks in the top of the dashboard that appear and spread over time, most often at the corners of the passenger airbag cover and above the instrument cluster. Owners say the panel becomes brittle, rattles or sags, and they are concerned the airbag cover may not work as intended or that loose plastic could be thrown if it deploys. Some report small cracks growing into wide splits, and a few mention asking a dealer about repair, with cost often left to the owner. Mostly reported between roughly 40,000 and 105,000 miles, with many owners saying cracks started small and grew over years, often on vehicles kept out of the sun.

   What to check: Inspect the dash top carefully in good light, especially beside the passenger airbag and above the gauge cluster, and press lightly for vibration or looseness. Ask whether the dash has been replaced or repaired.

   2 excerpts from owner complaints in NHTSA records

   “Two large cracks in dash, one over instrument cluster and the other where dash meets airbag. I noticed a very small crack approx four years ago and has now grown substantially. Researching this on the internet has shown this is a widespread problem with these vehicles, I am just one more complaining of a serious design flaw with possible safety ramifications.”

   NHTSA complaint #10807089, filed 2015-11, 50,000 miles

   “Dashboard cracked on passenger side at top left corner of airbag as well as on the drivers side behind the instrumentation panel. Cracked appears over time, at 48,000 miles and 62,000 miles, GM said they would pro - rate the cost that I would have to pay but after 100,000 miles the repair would be on me totally.”

   NHTSA complaint #10985851, filed 2017-05, 42,000 miles
2. 2
   Latches, locks and linkages

   Door locks and actuators stop working

   • 26 complaints (12%)
   • median 50,000 mi at 3.8 yrs old (22 state mileage)
   • filed 2010–2020

   Owners report that power locks quit working one door at a time, so the key fob or the driver's switch no longer unlocks the doors and each must be opened manually. Some describe locks cycling on their own while parked or driving, and the rear hatch staying locked with no inside release. Complaints say dealers identified failed actuators and quoted per-door replacement costs, and in several cases a repaired actuator or another door failed later. Often reported between about 25,000 and 75,000 miles, sometimes within a couple of years of purchase.

   What to check: Cycle every lock with the fob and the driver's switch, including the rear hatch, and check that each door locks and unlocks without hesitation. Ask which actuators, if any, have already been replaced.

   2 excerpts from owner complaints in NHTSA records

   “I own a 2008 chevy Suburban ltz with 37k miles. The rear door lock actuators failed at 36k miles. The faulty door lock actuators prevent locking or unlocking of the doors from the drivers seat. As I have small children, I feel it is a safety issue to drive with unlocked doors. After researching this issue I discovered the problem to be widespread on a number of Chevrolet vehicles. …”

   NHTSA complaint #10409948, filed 2011-06, 36,000 miles

   “Rear hatch door actuator went out. The door is in the locked position and cannot be opened with console button, key fob or exterior handle. There is no way to open the rear hatch from the inside of the vehicle creating a safety hazard for passengers riding in the 3rd seat. The rear hatch is not accessible for use since I is in a locked position and cannot be opened. I have filed a complaint with GM. Their cs representative contacted me to let me know that my local dealership can fix the problem at my expense. …”

   NHTSA complaint #10533536, filed 2013-08, 61,000 miles
3. 3
   Engine

   Excessive engine oil use

   • 20 complaints (9%)
   • median 120,800 mi at 8.4 yrs old (18 state mileage)
   • filed 2011–2023

   Complaints describe the 5.3L engine using oil quickly between changes, with owners adding quarts regularly and noticing low oil without a warning. Some report lifter noise, spark plug fouling or loss of power, and a number say they were told a new engine was needed. Several mention the dealer calling it a known characteristic or pointing to mileage and age. Service bulletins describe procedures for measuring oil consumption. Reported from about 27,000 miles upward, most commonly in the 60,000 to 149,000 mile range.

   3 related service bulletins

   What to check: Check the oil level and look for a fuel or burnt smell, and ask for oil change records or how much oil is added between changes. A compression or leak-down check before purchase is worth considering.

   2 excerpts from owner complaints in NHTSA records

   “My 2008 Suburban started burning a tremendous amount of oil. Seems like I was continuously adding oil. Raised the issue with the dealer, who indicated it was a common problem but probably not worth the expense of fixing if I could keep checking the oil. This advice was also based on the fact that all my maintenance has been performed at this dealer, so they know the vehicle well. The last week in january was very busy and saw me driving about 100 miles a day. …”

   NHTSA complaint #10564785, filed 2014-02, 125,000 miles

   “2008 Suburban 135k. Vehicle has been running well, all routine maintenance was done. Without any warning the vehicle was 3 quarts low on oil. Dealer checked engine told new engine needed. I was told a common problem further investigation I noted far to many similar complaints. This seems to be a defect in engine design. It should not require deaths before this issue is investigated. Like so many others repair cost is an unexpected burden. Gm response the vehicle high mileage and age are a factor. …”

   NHTSA complaint #10824881, filed 2016-02, 135,000 miles
4. 4
   Electrical system

   Stabilitrak warning and sudden loss of power

   • 18 complaints (8%)
   • median 120,000 mi at 7.8 yrs old (13 state mileage)
   • filed 2010–2023

   Owners describe the Stabilitrak, traction control and check engine lights coming on together, sometimes followed by the vehicle slowing sharply or stalling while driving. Some say restarting clears it briefly before it returns, and a few report gauges flickering, locks cycling and the radio cutting out at the same time. Complaints mention dealers replacing spark plugs, a battery or a throttle body without resolving it. Reported from roughly 35,000 to 150,000 miles, often at highway speed and not tied to one season.

   What to check: During a test drive watch for Stabilitrak or traction lights and any hesitation under acceleration. Ask whether the throttle body, spark plugs or battery have been replaced and whether the warning has come back.

   2 excerpts from owner complaints in NHTSA records

   “Own a 2008 Suburban and had exact problem five (5) times and paid to repair (5) times. We have called GM consistently relative to problem and will not admit issue. We have learned other owners having similar issues with stabillitrak sensors. The vehicle immediately drops speed to 20 miles an hour during driving. My understanding, the vehicle receives senor reading relative to sterring and stability (potential for vehicle to spin out of control). …”

   NHTSA complaint #10744655, filed 2015-07, 140,000 miles

   “After driving for approximately 3 hours the problem began: the door locks cycle repeatedly, the instrument console flashes, the drive position flashes from park to drive repeatedly, the radio stops working, the vehicle surges, and the stabilitrac says it needs to be serviced. This is the second report we have filed in a month. We have already taken it to the dealership once for this problem in early august when it was just the radio malfunctioning. They said to replace the radio. …”

   NHTSA complaint #10424482, filed 2011-09, 60,000 miles
5. 5
   Air bags

   Airbag recall repair not available

   Mentioned in 5 of 60 sampled complaints

   Several owners say they received notice of the passenger airbag inflator recall but were told a fix was not yet available, and some waited years without a remedy. Complaints describe repeated calls to the dealer and checks of the recall website with no resolution. Others report airbags that did not deploy in a crash. Reported across a wide mileage range, mostly from vehicles with 60,000 miles and up, filed over several years.

   Recall 21V050000Recall 21V052000

   What to check: Ask the dealer to run the VIN and confirm whether the passenger airbag inflator recall has been completed; the recall notices describe the affected states and model years.

   2 excerpts from owner complaints in NHTSA records

   “I received a safety recall notice in july 2016 for the takata airbags. As of today the information still says that a repair is not yet available. Given the age of my 2008 Suburban it is dangerous and ridiculous that a repair is still not available. Gm must be accountable for recalls on all potentially affected vehicles and repairs made in a timely manner.”

   NHTSA complaint #11266539, filed 2019-10, 200,000 miles

   “Air bags have been recalled but when I called dealership they told me I would have to wait for a recall notice, that was 4 years ago I've still never received a notice.”

   NHTSA complaint #11271763, filed 2019-10, 60,000 miles

Buying note. Have a shop check oil consumption and the dashboard and door locks before buying, and confirm the airbag inflator recall status by VIN. Records of lock actuator or engine work are useful to see what has already been addressed.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.