Technical Service Bulletin D21M3 — 2020 WESTERN STAR 4700
POWER TRAIN
Bulletin Details
| TSB ID | D21M3 |
| Manufacturer | |
| Vehicle | 2020 WESTERN STAR 4700 |
| Component | POWER TRAIN |
| Communication Date |
Bulletin Summary
Detroit Field Service Campaign for DT12 Gear Grind During Downshift Software Update.
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 2020 WESTERN STAR 4700
TechTalk12347K
EXTERIOR LIGHTING
TechTalk12347K
ELECTRICAL SYSTEM
TechTalk12331K
ELECTRICAL SYSTEM
TechTalk7155
STEERING
CALShackle
STEERING
CALShackle
SUSPENSION
CALShackle
EQUIPMENT
CALShackle
EQUIPMENT ADAPTIVE/MOBILITY
SBW54-077
ELECTRICAL SYSTEM
SS1034783REV
SUSPENSION