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Diesel Truck Mechanic Shops in Cambridge, ON

Find trusted diesel truck mechanic services in Cambridge. Compare prices, read reviews, and book online.

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600ORNOTHING DIESEL TECH INC
Cambridge • ≈ 2 km
60
600ORNOTHING DIESEL TECH INC
670 Industrial Rd, Cambridge, ON N3H 4V9, Canada, Cambridge
★ 4.9
31 Google reviews
Response ≈ 46 min • $$$ • Quotes free
Diesel Truck Mechanic
📞 (519) 653-9332 • Free quote • Verified
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Always On Call Mobile Truck & Trailer Repair Ltd
Cambridge • ≈ 8 km
AL
Always On Call Mobile Truck & Trailer Repair Ltd
1023 Rife Rd #12, Cambridge, ON N1R 5S3, Canada, Cambridge
★ 4.7
87 Google reviews
Response ≈ 53 min • $$ • Quotes free
Diesel Truck Mechanic Truck MechanicFuel System
📞 (519) 581-8100 • Free quote • Verified
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JB Truck Repair Centre
Cambridge • ≈ 2 km
JB
JB Truck Repair Centre
740 Beaverdale Rd, Cambridge, ON N3C 2V3, Canada, Cambridge
★ 4.7
73 Google reviews
Response ≈ 38 min • $ • Quotes free
Diesel Truck Mechanic Truck & Heavy Duty
📞 (226) 220-5107 • Free quote • Verified
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Eagle Truck and Trailer Repair
Cambridge • ≈ 10 km
EA
Eagle Truck and Trailer Repair
131 Savage Dr #2, Cambridge, ON N1T 1S8, Canada, Cambridge
★ 4.6
36 Google reviews
Response ≈ 25 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (519) 265-5714 • Free quote • Verified
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SUPER X TRUCK REPAIR
Cambridge • ≈ 2 km
SU
SUPER X TRUCK REPAIR
520 Sheldon Dr, Cambridge, ON N1T 2C1, Canada, Cambridge
★ 4.3
30 Google reviews
Response ≈ 42 min • $$$ • Quotes free
Diesel Truck Mechanic Truck MechanicTruck & Heavy Duty
📞 (519) 830-9200 • Free quote • Verified
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Verified Reviews for Diesel Truck Mechanic
★ ★ ★ ★ ★

“Very knowledgeable mechanics and experts in anything to do with CAT engines !”

Vonte • Diesel Truck Mechanic at 600ORNOTHING DIESEL TECH INC, Cambridge
★ ★ ★ ★ ★

“I came into JB's shop with a jammed up Fifth Wheel slider they got on it in about 10 minutes after I arrived and freed it up no charge!!! These guys are all polite courteous I'll be back great shop!!”

Brant Mcnamee • Diesel Truck Mechanic at JB Truck Repair Centre, Cambridge
★ ★ ★ ★ ★

“Always On Call truly stands out in the market. They are reliable, professional, and consistently available whenever needed. Their response time is quick, and their pricing is very reasonable for the quality of service they provide. It’s clear they take pride in their work and customer satisfaction. I highly recommend Always On Call to anyone looking for dependable and efficient service.

GESS Transport”

George Breger • Diesel Truck Mechanic at Always On Call Mobile Truck & Trailer Repair Ltd, Cambridge
★ ★ ★ ★ ★

“Great truck macnices and fair pricing”

Countryside Landscapes • Diesel Truck Mechanic at SUPER X TRUCK REPAIR, Cambridge
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Find a Best Diesel Truck Mechanic in Cambridge, ON

Don't leave your Diesel Truck Mechanic to chance. Browse 6 trusted mechanics in Cambridge, read authentic customer reviews, and find the right shop for your vehicle today.

Common Diesel Truck Issues

Contaminated diesel fuel or clogged fuel filters restricting flow
Failing fuel injectors or high-pressure fuel pumps (HPFP) losing rail pressure
Clogged EGR valves and cracked EGR coolers causing overheating and coolant loss
Turbocharger bearing failure, sticking variable-geometry vanes, or boost leaks
Glow plug or intake heater malfunctions preventing cold-weather starting
Diesel Particulate Filter (DPF) clogging from excessive idling or short trips

When to Book a Diesel Mechanic

Hard starting or extended cranking, especially in cold weather
Excessive black smoke (rich running), white smoke (coolant leak), or blue smoke (oil burning) from the exhaust
Distinct metallic "knocking" or "clatter" sound indicating injector or bearing failure
Check Engine light, Water in Fuel warning, or emission system derate mode
Significantly reduced towing power, turbo lag, or sluggish acceleration
Frequent forced DPF regeneration cycles or "Exhaust Filter Full" warnings on the dash

Diesel Truck Mechanic Services Available

Diesel Fuel System Repair

Injector replacement, high-pressure fuel pump rebuilds, and rail pressure testing

Turbocharger Diagnostics & Replacement

Boost leak testing, VGT actuator repair, and full turbo replacement

EGR/DPF/DEF Emission System Service

EGR cooler replacement, DPF cleaning/baking, and DEF injector diagnostics

Glow Plug & Cold Start Service

Testing, extraction of seized glow plugs, and intake heater repair

Diesel Engine Diagnostics

Factory-level scanning for Cummins, Duramax, Power Stroke, and Detroit engines

Diesel Performance Tuning

ECM calibration, exhaust upgrades, and intake system optimization

Diesel Truck Mechanic Tips

Always purchase diesel fuel from high-volume, reputable stations to minimize contamination risk
Drain the water separator at every oil change and immediately if the Water in Fuel light illuminates
Use a high-quality winter anti-gel additive when temperatures consistently drop below -15°C
Avoid excessive idling—it prevents the DPF from reaching regeneration temperature and causes clogging
Let the turbo cool down by idling for 30-60 seconds before shutting off the engine after heavy towing
Follow the severe-duty oil change interval if you tow, haul, or drive in extreme temperatures regularly

Frequently Asked Questions

Are diesel truck repairs more expensive than gas engine repairs in Cambridge? +
Generally, yes. Diesel engines operate at much higher pressures and tolerances than gasoline engines. Components like fuel injectors ($300-$600 each), high-pressure fuel pumps ($1,500-$3,000), and turbochargers ($1,500-$3,500) are significantly more expensive. Diesel-specific diagnostic tools and specialized labor also contribute to higher repair costs.
How much does a diesel fuel injector replacement cost in Cambridge? +
A single diesel injector replacement costs $500-$1,000 including parts and labor. Replacing all injectors on a common 6-cylinder diesel (Cummins 6.7L, Duramax 6.6L, or Power Stroke 6.7L) typically runs $3,000-$6,000+. It's often recommended to replace all injectors at once to avoid repeat labor costs.
What does it mean when my diesel truck goes into derate or limp mode? +
Derate mode is the engine's ECM intentionally reducing power to protect itself from further damage, usually triggered by emission system faults (DPF, DEF, EGR), overheating, or low oil pressure. You should drive only to the nearest safe repair facility at reduced speed. Ignoring derate can lead to a complete engine shutdown.
How often should I service my diesel truck's DPF system? +
Most diesel DPF systems require a professional cleaning (ash removal) every 150,000-300,000 km, depending on driving conditions. Trucks driven primarily in city stop-and-go traffic or at idle may need it sooner. A DPF cleaning costs $300-$600 and is far cheaper than a replacement filter ($2,000-$5,000+).

Diesel Truck Mechanic in Nearby Cities

Toronto Ottawa Mississauga Brampton Hamilton London Markham Vaughan

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