Technical Service Bulletin 18NA054 — 2018 GMC TERRAIN
EQUIPMENT
Bulletin Details
| TSB ID | 18NA054 |
| Manufacturer | |
| Vehicle | 2018 GMC TERRAIN |
| Component | EQUIPMENT |
| Communication Date |
Bulletin Summary
This technical bulletin provides a service procedure to correct a customer concern of Momentary Sharp Deceleration During 1-2 Upshift or a Momentary Neutral During 2-4 Upshift, Transmission Stuck in 2nd Gear, MIL Illuminated.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.