Detroit Diesel Engine Repair in Montreal: DD13, DD15, DD16 and Series 60
Detroit engines power most Freightliner Cascadias and late-model Western Stars, and the Series 60 is still common in many fleets. We diagnose and repair them in Saint-Laurent.
Detroit Diesel engines we repair
Current or recent engines
- DD13
- DD15
- DD16
Older engines still on the road
- Series 60 (12.7 L and 14 L)
- First-generation DD13 / DD15
The Series 60 was replaced by the DD family around 2008-2010. Late-model DD engines use Detroit's own electronics and aftertreatment.
Common Detroit Diesel engine repairs
DD15 injection and fuel pressure
Injectors, high-pressure pump and the exhaust doser (7th injector) when the truck is hard to start or down on power.
Detroit aftertreatment (ATS)
DOC, DPF, SCR, NOx sensors and regens: diagnosing the frequent derates on Cascadias.
DD13 turbo and EGR
Turbo, EGR valve and cooler, pressure sensors and charge-air leaks.
Series 60
Service, overheating, injection and electrical work on Series 60 engines still in service.
Problems we diagnose
- Check engine light
- Fault codes
- Derate
- Power loss
- Hard starting
- Fuel injection
- Fuel pressure
- Turbo
- EGR
- Cooling system
- Overheating
- DPF
- DOC
- SCR
- DEF
- Regen
- Sensors
- Engine electrical
Related services
Trucks often fitted with Detroit Diesel engines
Depending on the truck's year and spec.
FAQ
Are you a Detroit dealer?
No. CM Montréal is an independent heavy-duty truck shop; we are not a Detroit dealer or warranty centre.
Can you do a forced regen on a DD15?
Yes, after diagnostics. A regen doesn't always fix the root cause, so we check sensors, the DOC and the doser first.
Do you repair the Series 60?
Yes, we still service and repair Series 60 engines.