2008 GMC Acadia: Reliability, Recalls, Known Issues & Cost to Own
Data last updated 2026-07-04 · sources listed throughout · based on public NHTSA data
The most-complained Acadia ever (850+ NHTSA filings): premature 6T75 transmission failure plus timing-chain, power-steering and airbag issues. Avoid without documented major repairs. 4 known issue patterns are documented below, with frequency and the mileage windows where they typically appear. New, the 2008 GMC Acadia ranged from $29,255 to $33,720 depending on trim (base MSRP, before options and destination).
This listing
Context from the listing you were viewing, not a market-price judgement.
The most-complained Acadia ever (850+ NHTSA filings): premature 6T75 transmission failure plus timing-chain, power-steering and airbag issues. Avoid without documented major repairs.
Sources (2)
- api.nhtsa.govhttps://api.nhtsa.gov/complaints/complaintsByVehicle?make=gmc&model=acadia&mo…
- repairpal.comhttps://repairpal.com/reliability/gmc/acadia
Known issues
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6T75 six-speed automatic prone to premature failure: slipping, harsh shifts and complete breakdown, often a costly replacement.
widespread · 279 NHTSA complaints · transmission
-
3.6L V6 timing-chain stretch causing a startup/acceleration rattle and cam/crank correlation codes that can lead to internal engine damage.
commonly reported · engine
-
Takata passenger-airbag inflator recall affecting these model years.
occasional · 153 NHTSA complaints · other
-
Power-steering pump and rack leaks leading to whining and loss of assist.
commonly reported · 133 NHTSA complaints · steering
Based on public NHTSA complaint data and AI synthesis: patterns, not guarantees.
Sources (3)
- api.nhtsa.govhttps://api.nhtsa.gov/complaints/complaintsByVehicle?make=gmc&model=acadia&mo…
- api.nhtsa.govhttps://api.nhtsa.gov/complaints/complaintsByVehicle?make=gmc&model=acadia&mo…
- blog.1aauto.comhttps://blog.1aauto.com/1st-gen-gmc-acadia-problems/
Recalls & safety
Recall history hasn't been loaded for this model year yet.
Whether a recall is still open on a specific car depends on its VIN. Check it free at NHTSA's VIN lookup (nhtsa.gov/recalls), or ask the seller for proof the repair was done.
Pros & cons
Pros
- Comfortable, quiet highway ride.
- Smooth, torquey 3.6L V6 with respectable towing capability.
- Roomy three-row seating and large cargo hold for a midsize crossover.
Cons
- Costly transmission and timing-chain repairs blight the early years.
- Power-steering failures are common across the generation.
- Below-average fuel economy for the class.
- Dated infotainment and interior materials on early model years.
Trims & original pricing
| Trim | Original base MSRP | New today | Engine | MPG |
|---|---|---|---|---|
| SLE | $29,255 | discontinued | — | — |
| SLT | $33,720 | discontinued | — | — |
Prices are base MSRP for each trim's standard configuration. Options, packages, and destination charges added to what original buyers actually paid.
Sources (1)
- iseecars.comhttps://www.iseecars.com/car/2008-gmc-acadia-price
Depreciation
Move your cursor along the line to see the estimated value for any year.
This listing sits above the typical depreciation curve. Common for heavily-optioned cars and for 2021-2023 model years (pandemic-era pricing); the curve is anchored at base MSRP, which excludes options.
Curve anchored at the entry-trim base MSRP ($29,255). Higher trims started higher (up to $33,720), and options added more.
The curve's data ends 10 years in, so the line levels off after that. Treat the tail as a floor, not a forecast: asking prices for older cars depend mostly on condition, mileage, and the current market, and often sit well above it.
Sources (1)
- iseecars.comhttps://www.iseecars.com/car/gmc-acadia/resale-value
Cost to own
| Repairs (rises with mileage) | ≈ $700–750/yr |
| Insurance (medium tier) | ≈ $2,200–2,300/yr |
| Expected lifespan | ~200k miles |
National-average estimates based on public data. Your costs vary by region, driver, and condition.
Sources (2)
- repairpal.comhttps://repairpal.com/reliability/gmc/acadia
- caredge.comhttps://caredge.com/gmc/acadia/insurance
Frequently asked questions
What problems does the 2008 GMC Acadia have?
Documented issue patterns include: 6T75 six-speed automatic prone to premature failure: slipping, harsh shifts and complete breakdown, often a costly replacement; 3.6L V6 timing-chain stretch causing a startup/acceleration rattle and cam/crank correlation codes that can lead to internal engine damage; Takata passenger-airbag inflator recall affecting these model years; Power-steering pump and rack leaks leading to whining and loss of assist. Frequency is based on public NHTSA complaint data: patterns, not guarantees.
Is the 2008 GMC Acadia reliable?
The most-complained Acadia ever (850+ NHTSA filings): premature 6T75 transmission failure plus timing-chain, power-steering and airbag issues. Avoid without documented major repairs.
How much did the 2008 GMC Acadia cost new?
Between $29,255 and $33,720 depending on trim. Those are base MSRPs for each trim's standard configuration; options, packages, and destination charges added to what original buyers actually paid.
Is the GMC Acadia expensive to maintain?
Estimated repairs run roughly $700–750/year as mileage climbs.
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Estimates are based on public data: patterns, not guarantees. CarVitals is not affiliated with NHTSA, CarMax, AutoTrader, or Cars.com. Issue frequencies come from public NHTSA complaint data, which has no denominator, so they describe reporting patterns, not failure probabilities. Always have a used car inspected before buying. How we build these reports.