January 19: GM Engine Failure Recall Investigation Opened investigations | 2 days ago
January 2: GM Says Brake Master Cylinder Failure Lawsuit Fails news | 19 days ago
December 28: GM Lifter Failure Lawsuit Includes Multiple Models news | 24 days ago
December 22: GM Air Conditioning Class Action Lawsuit: 8 Years in Court news | 30 days ago
December 7: GM Engine Class Action Lawsuit Set To Begin news | 45 days ago
GMC TSB #18NA120
2018 GMC Terrain
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- Summary
- This technical bulletin provides a procedure to reposition the exhaust clamp to correct a condition of Exhaust Smell in Cabin and/or DTC P0421 Set due to a miss installed clamp.
Click a tab for more information.




