The Lemon IndexThe engine computer sees the cam and crank timing drifting out of line on bank 1. Full P0008 page
12 owner complaints · the #2 code GMC Acadia owners name · 12% of GMC Acadia complaints that name a code (every car: 0.7%)
Middle of 110,000 miles · most between 96,000 and 140,000 (11 owners gave it)
GMC Acadia owners named P0008 in 12 complaints to the U.S. government (NHTSA), most often on the 2010, 2011 and 2009 model years, at a middle of 110,000 miles. The part they name most is the timing chain, tensioner or cam phaser (5 complaints). Complaints are owner reports, not proof of a defect.
GMC Acadia model years that report P0008
Owner complaints naming P0008, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
Mileage when it happened
110,000 miles is the middle of what 11 owners entered. Half were between 96,000 and 140,000 miles.
The mileage on the complaint form, when the owner gave one.
What owners say caused it or fixed it
The most-named part is the timing chain, tensioner or cam phaser, in 5 of the 12 complaints (42%). 4 of those mention it being replaced or repaired.
- Timing chain, tensioner or cam phaser5 complaints4 mention a repair or replacement · what GMC Acadia owners paid
3 complaints mention a recall and 6 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P0008
67% of these complaints say the check engine light came on.
Codes owners report with it
P0017 5
Other codes named in the same GMC Acadia complaints, and in how many.
Repair costs
GMC Acadia timing chain replacement cost
Keep going
- P0008: meaning, causes and every car that reports it
- GMC Acadia reliability by year
- 2010 GMC Acadia problems and recalls
Other codes GMC Acadia owners report
P0008 on other cars
Chevrolet Traverse (37) · Chevrolet Camaro (20) · Buick Enclave (15) · Cadillac CTS (11)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P0008 means
The engine computer sees the cam and crank timing drifting out of line on bank 1. On many engines this is an early sign of a stretched timing chain.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
- Stretched timing chain
- Worn chain guides or tensioner
- Faulty cam phaser or VVT solenoid
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11377030, 11210213, 11194098, 11183155, 11174873, 10983172, 10959677, 10947737, 10935338, 10905669, 10887969, 10876640.
Quick answers
What does P0008 mean on a GMC Acadia?
Engine Position System Performance (Bank 1). The engine computer sees the cam and crank timing drifting out of line on bank 1. On many engines this is an early sign of a stretched timing chain.
Which GMC Acadia years have the most P0008 complaints?
In complaints to NHTSA, owners of the 2010 (10), 2011 (1), 2009 (1) GMC Acadia named P0008 most (12 complaints in all, 2009–2011). Raw counts, not a failure rate.
What fixes P0008 on a GMC Acadia?
Owners most often name the timing chain, tensioner or cam phaser (5 of 12 complaints). That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
At what mileage does P0008 show up on a GMC Acadia?
Owners who gave their mileage reported a middle of 110,000 miles; half were between 96,000 and 140,000 (11 owners).
Can I drive my GMC Acadia with P0008?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Sources: NHTSA owner complaints that name P0008 on the GMC Acadia, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.