Boommar. Find Mechanics
Add Listing
BOOMMAR / ON / Mississauga / Diesel Truck Mechanic

Diesel Truck Mechanic Shops in Mississauga, ON

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

✓ Verified Shops ✓ Online Booking ✓ Real Reviews
Mr Diesel Inc
Verified Verified
Mississauga • ≈ 2 km
MR
Mr Diesel Inc
5900 Dixie Rd, Mississauga
Response ≈ 27 min • $$ • Quotes free
Diesel Truck Mechanic Windshield & GlassEngine Repair
📞 9056777663 • Free quote • Verified
View Profile
AS Diesel truck and trailer repair
Mississauga • ≈ 10 km
AS
AS Diesel truck and trailer repair
1715 Sismet Rd, Mississauga, ON L4W 2K8, Canada, Mississauga
★ 5.0
10 Google reviews
Response ≈ 24 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (647) 671-4904 • Free quote • Verified
View Profile
T Diesel Mobile Mechanic Mississauga
Mississauga • ≈ 3 km
T
T Diesel Mobile Mechanic Mississauga
Third St, Mississauga, ON L5G 4J5, Mississauga
★ 5.0
5 Google reviews
Response ≈ 51 min • $$$ • Quotes free
Diesel Truck Mechanic
📞 (416) 825-6429 • Free quote • Verified
View Profile
T DOT Diesel Mechanic
Mississauga • ≈ 4 km
T
T DOT Diesel Mechanic
5990 Indian Line, Mississauga, ON L4V 1G4, Mississauga
★ 5.0
60 Google reviews
Response ≈ 26 min • $ • Quotes free
Diesel Truck Mechanic
📞 +1 647-909-7500 • Free quote • Verified
View Profile
Unique Diesel Repair Centre
Mississauga • ≈ 9 km
UN
Unique Diesel Repair Centre
1715 Britannia Rd E #12, Mississauga, ON L4W 2A3, Canada, Mississauga
★ 5.0
4 Google reviews
Response ≈ 19 min • $ • Quotes free
Diesel Truck Mechanic
📞 (416) 669-8072 • Free quote • Verified
View Profile
west coast diesel repair
Mississauga • ≈ 10 km
WE
west coast diesel repair
1905 Shawson Dr, Mississauga, ON L4W 1T9, Mississauga
★ 4.9
40 Google reviews
Response ≈ 21 min • $$ • Quotes free
Diesel Truck Mechanic
📞 +1 647-961-4810 • Free quote • Verified
View Profile
Diesel Repair Hub
Mississauga • ≈ 10 km
DI
Diesel Repair Hub
7517 Bren Rd Unit 19&20, Mississauga, ON L4T 3V4, Canada, Mississauga
★ 4.8
28 Google reviews
Response ≈ 30 min • $ • Quotes free
Diesel Truck Mechanic
📞 (905) 790-1221 • Free quote • Verified
View Profile
Diesel Repair Hub
Mississauga • ≈ 3 km
DI
Diesel Repair Hub
7517 Bren Rd Unit 19&20, Mississauga, ON L4T 3V4, Mississauga
★ 4.8
27 Google reviews
Response ≈ 57 min • $$$ • Quotes free
Diesel Truck Mechanic
📞 +1 905-790-1221 • Free quote • Verified
View Profile
Hi-End Diesel Truck & Trailer Repair
Mississauga • ≈ 8 km
HI
Hi-End Diesel Truck & Trailer Repair
1123 Lorimar Dr, Mississauga, ON L5S 1M5, Mississauga
★ 4.8
63 Google reviews
Response ≈ 38 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (905) 793-0000 • Free quote • Verified
View Profile
west coast diesel repair
Mississauga • ≈ 4 km
WE
west coast diesel repair
1905 Shawson Dr, Mississauga, ON L4W 1T9, Canada, Mississauga
★ 4.8
33 Google reviews
Response ≈ 41 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (647) 961-4810 • Free quote • Verified
View Profile
Super Tech Truck Repair
Mississauga • ≈ 8 km
SU
Super Tech Truck Repair
6439 Netherhart Rd, Mississauga, ON L5T 1C3, Mississauga
★ 4.4
59 Google reviews
Response ≈ 20 min • $ • Quotes free
Diesel Truck Mechanic Truck & Heavy DutyTruck Mechanic
📞 (647) 870-3476 • Free quote • Verified
View Profile
House of Diesel
Mississauga • ≈ 4 km
HO
House of Diesel
1850 Britannia Rd E Unit -7, Mississauga, ON L4W 1J3, Canada, Mississauga
★ 4.2
62 Google reviews
Response ≈ 46 min • $$$ • Quotes free
Diesel Truck Mechanic
📞 (437) 228-7000 • Free quote • Verified
View Profile
Diesel Truck Centre
Mississauga • ≈ 9 km
DI
Diesel Truck Centre
2677 Drew Rd, Mississauga, ON L4T 3X1, Mississauga
★ 3.6
52 Google reviews
Response ≈ 53 min • $$ • Quotes free
Diesel Truck Mechanic
📞 (905) 908-1995 • Free quote • Verified
View Profile
Showing 13 mechanics • Load more
Online booking workflow

Mississauga bookings,
zero phone tag.

STEP 01
Search

Filter Mississauga shops by service, rating, distance, open now.

13 results • verified
STEP 02
Request Booking

Send vehicle + service details. Get a firm quote or pick a slot.

Avg reply 42m
STEP 03
Shop Approves

Owner confirms time, price, and bay availability. One tap.

Calendar & SMS sync
STEP 04
Appointment Confirmed

You get confirm + reminders + live status tracking.

Stripe receipts
Mississauga customer reviews

Real bookings, real reviews

Verified Reviews for Diesel Truck Mechanic
★ ★ ★ ★ ★

“Great service very experienced mechanics and very reasonable price highly recommended excellent customer service, clear communication, great job guys keep it up”

Ravinder Pal • Diesel Truck Mechanic at AS Diesel truck and trailer repair, Mississauga
★ ★ ★ ★ ★

“Exceptional customer service and expertise. Al was efficient and took great care of my 2017 Dodge Ram 1500 ecodiesel. Al’s your guy!”

JACK BEDFORD • Diesel Truck Mechanic at T Diesel Mobile Mechanic Mississauga, Mississauga
★ ★ ★ ★ ★

“Good mechanic 💯<br>Fast service”

Biryani Lover • Diesel Truck Mechanic at Diesel Repair Hub, Mississauga
★ ★ ★ ★ ★

“They do great work and get you back on road quickly. AJ is very professional and good to work with!”

Daniel Morris • Diesel Truck Mechanic at T DOT Diesel Mechanic, Mississauga
For shop owners

Get More Customers
Through Boommar

Mississauga drivers searched “auto mechanic” 8,400 times last month. Claim your listing, turn searches into bookings.

• Online Booking
• Lead Tracking
• Review Management
• Listing Analytics
Claim Your Listing View Mississauga pricing
Mississauga Pro – last 30 days
+41
booking requests
4.8★
avg rating
31m
median reply
92%
show-up rate
Calendar sync • Stripe • SMS reminders • Review automation

Find a Best Diesel Truck Mechanic in Mississauga, ON

Need a reliable mechanic for Diesel Truck Mechanic in Mississauga? We've verified 13 local shops ready to help. Check their availability and get a quote instantly.

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 Mississauga? +
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 Mississauga? +
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 Brampton Hamilton London Markham Vaughan Kitchener

Other Services in Mississauga

Auto Mechanic Truck Mechanic Oil Change & Lube Brake Services Tires & Wheels Auto Detailing Auto Body & Paint Windshield & Glass

Popular Cities

Toronto Vancouver Calgary Edmonton Ottawa Winnipeg