ElectricalHigh
'Shift to Park' warning even when in park.
- Typically appears
- Any
- What to inspect
- Confirm it shifts to park cleanly without a persistent warning.
- Typical repair
- Significant repair · £400–£1,400
Is the 2017–2023 GMC Acadia reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
5.7/ 10
MixedOn our documented-fault scoring the GMC Acadia rates 5.7 out of 10 · mixed. We hold 8 known faults for it and 1 are rated high severity, so the risk is real but contained. The weak points cluster around electrical, transmission and hvac. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Negotiate · budget for the known faults
What the score is built from
- Critical
- 0
- High
- 1
- Medium
- 5
- Low
- 2
Weak points cluster around electrical, transmission, hvac, engine/cooling.
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Check this carThe faults that decide it
TransmissionMedium
9-speed automatic shudder / hard shifts.
- Typically appears
- Any
- What to inspect
- Feel for shudder on light acceleration.
- Typical repair
- Routine repair · £180–£700
HVACMedium
AC condenser faults.
- Typically appears
- 70,000+ miles
- What to inspect
- Confirm cold AC output.
- Typical repair
- Routine repair · £180–£700
Engine/CoolingMedium
Cooling fans running constantly on high speed and temperature gauge reading cold (P0128 thermostat failure).
- Typically appears
- 40,000-70,000 miles
- What to inspect
- Start the engine from cold and let it idle. Listen to see if the radiator fans immediately engage on maximum speed whilst the temperature gauge remains pinned at the bottom.
- Typical repair
- Cooling component replacement · £220–£750
DrivetrainMedium
Juddering, binding, or a scrubbing sensation from the rear axle during tight turns on AWD models.
- Typically appears
- 30,000-50,000 miles
- What to inspect
- Perform a tight figure-of-eight manoeuvre at low speed on the forecourt. Feel for driveline binding and listen for chatter or tyre scrubbing from the rear differential.
- Typical repair
- Driveline / differential repair · £450–£1,800
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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