Western Star Truck Repair in Montreal: 57X, 49X and 4900
Western Stars work hard, on the highway and on the job site. We repair late-model 57Xs and 49Xs as well as 4900s and 5700XEs still in service. Independent shop, not a dealer.
Western Star models we repair
Current or recent models
- 57X
- 49X
Older generations we still service
- 4900
- 5700XE
Engines
Current or recent engines
- Detroit DD13
- Detroit DD15
- Detroit DD16
- Cummins X15 (some specs)
- Cummins X12 (some vocational specs)
Engines found on earlier generations
- Detroit Series 60 (older 4900s)
- Cummins ISX (older specs)
- Caterpillar (some older 4900s)
Engines vary widely by application (highway or heavy duty) and year. We confirm with the VIN.
Common work on Western Star trucks
Detroit DD15 / DD16
Diagnostics, aftertreatment and turbo work on Detroit-powered 57Xs and 49Xs.
4900 heavy-duty work
Differentials, suspension, steering and brakes on construction and heavy-haul 4900s.
Series 60 on older 4900s
Service and repair for Series 60 engines still found in many fleets.
Electrical and lighting
Electrical troubleshooting, batteries and starting on new and older Western Stars.
Our services for your Western Star
Electronic diagnostics and check engine
Reading and interpreting fault codes, check engine lights, derate.
DPF, SCR, DEF and regen
Plugged particulate filter, regens, NOx sensors, DEF doser and fluid quality.
Engine, injection, turbo, cooling
Power loss, injectors, turbo, leaks, overheating and cooling system.
Transmission and differential
Manual and automated transmissions, clutch, differentials and driveline.
Brakes and ABS
Air brakes, linings, drums, brake chambers and ABS.
Electrical system
Batteries, alternator, starter and electrical troubleshooting.
Heavy truck suspension
Air suspension, air bags, shocks and springs diagnostics depending on the vehicle.
PM preventive maintenance
PM-A and PM-B service: inspection, oil, filters and greasing.
Webasto heaters and A/C
Webasto installation and cab A/C repair.
Engines found in Western Star trucks
FAQ
Do you repair Western Star 4900 work trucks?
Yes. We handle brakes, suspension, differentials and engine work on heavy-duty 4900s.
Does the 57X use the same engines as the Cascadia?
Both are commonly spec'd with Detroit DD13, DD15 or DD16 engines, depending on configuration.
Are you a Western Star dealer?
No. CM Montréal is an independent shop.