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.
2017–2023 GMC Acadia · common problems & known faults
The 2nd-gen Acadia is a mid-size SUV; the shift-to-park glitch and 9-speed behaviour are the checks.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
Quick answer
The most commonly reported faults on the 2017–2023 GMC Acadia are 'Shift to Park' warning even when in park, 9-speed automatic shudder / hard shifts and AC condenser faults. 1 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the GMC Acadia.
7.6/ 10
- Critical
- 0
- High
- 1
- Medium
- 2
- Low
- 1
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
TransmissionMedium
9-speed automatic shudder / hard shifts.
- Typically appears
- Any
- What to inspect
- Feel for shudder on light acceleration.
HVACMedium
AC condenser faults.
- Typically appears
- 70,000+ miles
- What to inspect
- Confirm cold AC output.
ElectricalLow
Stabilitrak and infotainment glitches.
- Typically appears
- Age-related
- What to inspect
- Watch for warning messages and test the screen.
Inspecting a GMC Acadia?
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Check this exact carFrequently asked questions
Is the Acadia reliable?
Average — the shift-to-park fault and transmission shudder are the common complaints.
What is the shift-to-park problem?
A faulty park sensor triggers a warning and can prevent restart; confirm it's resolved.
Which engine is best?
The 3.6 V6 is stronger than the 2.5 four; the 2.0T is a good middle ground.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.