GMC Terrain Trouble Codes, Symptoms & Recalls
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Common check engine codes on the GMC Terrain
- P0420 — Catalyst System Efficiency Below Threshold (Bank 1)
- P0300 — Random/Multiple Cylinder Misfire Detected
- P0171 — System Too Lean (Bank 1)
- P0442 — Evaporative Emission System Small Leak Detected
- P0455 — Evaporative Emission System Large Leak Detected
- P0128 — Coolant Temperature Below Thermostat Regulating Temperature
- P0401 — EGR Insufficient Flow Detected
- P0440 — Evaporative Emission Control System Malfunction
- P0301 — Cylinder 1 Misfire Detected
- P0174 — System Too Lean (Bank 2)
Common GMC Terrain symptoms
- GMC Terrain car shaking when braking
- GMC Terrain brakes squealing when stopping
- GMC Terrain check engine light on
- GMC Terrain car won't start
- GMC Terrain car overheating
- GMC Terrain car loses power when accelerating
- GMC Terrain car running or idling rough
- GMC Terrain white smoke from exhaust
- GMC Terrain blue smoke from exhaust
- GMC Terrain battery light on while driving
- GMC Terrain car pulls to one side
- GMC Terrain car ac not blowing cold
Maintenance & recalls
GMC Terrain maintenance resources · GMC Terrain NHTSA recalls & complaints