EngineHigh
5.3L AFM lifter failure and oil consumption.
- Typically appears
- 80,000+ miles
- What to inspect
- Listen for a tick/misfire; check oil level and history for lifter work.
2014–2018 GMC Sierra 1500 · common problems & known faults
The GMC Sierra 1500 shares its platform with the Silverado — the 5.3L V8's lifters and a cracked-dash issue are the headline checks.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
Quick answer
The most commonly reported faults on the 2014–2018 GMC Sierra 1500 are 5.3L AFM lifter failure and oil consumption, Torque-converter shudder and AC condenser failure. 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 Sierra 1500.
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
InteriorLow
Cracking dashboard with age/sun.
- Typically appears
- Age-related
- What to inspect
- Inspect the dash top for cracks.
TransmissionMedium
Torque-converter shudder.
- Typically appears
- 70,000+ miles
- What to inspect
- Test-drive at light throttle for shudder.
HVACMedium
AC condenser failure.
- Typically appears
- 60,000+ miles
- What to inspect
- Confirm cold AC.
Inspecting a GMC Sierra 1500?
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Check this exact carFrequently asked questions
Is the GMC Sierra 1500 reliable?
Broadly yes, but the 5.3L AFM lifter issue can be costly — inspect carefully.
Does the Sierra have a cracked-dash problem?
Yes — dashboards commonly crack with age; it's cosmetic but widespread.
Which engine is best?
The 6.2L V8 is strong; all use cylinder deactivation, so watch lifter health.
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.