Technical Service Bulletin 21NA074 — 2020 BUICK ENVISION
EXTERIOR LIGHTING
Bulletin Details
| TSB ID | 21NA074 |
| Manufacturer | |
| Vehicle | 2020 BUICK ENVISION |
| Component | EXTERIOR LIGHTING |
| Communication Date |
Bulletin Summary
This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.
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.