Technical Service Bulletin 21-NA-135 — 2021 CHEVROLET BLAZER
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | 21-NA-135 |
| Manufacturer | |
| Vehicle | 2021 CHEVROLET BLAZER |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
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.
Other TSBs for the 2021 CHEVROLET BLAZER
PIP6085
UNKNOWN OR OTHER
23-NA-074
ENGINE
PIP5824D
ENGINE
24-NA-068
ENGINE
23-NA-074
SERVICE BRAKES
PIT5843B
VEHICLE SPEED CONTROL
N222359240-01
VISIBILITY:REARVIEW MIRRORS/DEVICES
22-NA-023
EQUIPMENT
PIE0699A
POWER TRAIN
N212355740
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE