Diesel Truck Mechanic Shops in Stonewall, MB

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

✓ Verified Shops ✓ Online Booking ✓ Real Reviews
Southside Service
Stonewall • ≈ 2 km
SO
462 Main St, Stonewall, MB R0C 2Z0, Canada, Stonewall
★ 4.9
44 Google reviews
Response ≈ 50 min • $ • Quotes free
Diesel Truck Mechanic Oil Change & LubeBrake Services
📞 (204) 467-2378 • Free quote • Verified
Walls Rod and Custom
Stonewall • ≈ 9 km
WA
51126 206 Pr, Lorette, MB R5K 0Y8, Canada, Stonewall
★ 4.7
49 Google reviews
Response ≈ 49 min • $ • Quotes free
Diesel Truck Mechanic
📞 (204) 878-4321 • Free quote • Verified
Little Auto Shop on the Prarie
Stonewall • ≈ 3 km
LI
74 Rd N, Stonewall, MB R0C 2Z0, Canada, Stonewall
★ 4.6
27 Google reviews
Response ≈ 53 min • $$ • Quotes free
Diesel Truck Mechanic Oil Change & LubeBrake Services
📞 (555) 000-0000 • Free quote • Verified
Iron Hand Diesel Repair
Stonewall • ≈ 9 km
IR
39082 MB-303 A, La Broquerie, MB R0A 0W2, Canada, Stonewall
Response ≈ 57 min • $ • Quotes free
Diesel Truck Mechanic
📞 (204) 326-3086 • Free quote • Verified
Showing 4 mechanics • Load more
Online booking workflow

Stonewall bookings,
zero phone tag.

STEP 01
Search

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

4 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
Stonewall customer reviews

Real bookings, real reviews

Verified Reviews for Diesel Truck Mechanic
★ ★ ★ ★ ★

“I took my truck to Southside for a long overdue AC compressor replacement and recharge. Everything was done within the same day and the AC is blowing ice cold again. Excellent communication and service throughout — highly recommend them for any repairs.”

Devon Markus • Diesel Truck Mechanic at Southside Service, Stonewall
★ ★ ★ ★ ★

“I had a problem with my def system,<br>truck derated up to 5MPH and won't regen.<br>Stop lights came on and all other lights came on after that, I was able to regen the truck but that didn't clear anything all the lights was still in include red stop lights so I called Patrick from iron brother diesel.<br>He immediately asked me what Fault code I have I told him and he said Your NOX sensor is bad and it has to be replaced Then a regen after that am SCR will take about 2 hours to clear all that and thats exactly what he did ..he bought brand new NOX sensor from freightliner put it on and after two hours all that fault code is gone..<br>I would highly recommend it this guy know what he is doing when it comes to freightliner diagnostics and after treatment message system not a lot mechanic can fix that over the road..”

Awil Duale • Diesel Truck Mechanic at Iron Hand Diesel Repair, Stonewall
★ ★ ★ ★ ★

“Great service. Absolutely recommend Southside Service. Each step they were great customer service from booking the appointment to payment.”

H M • Diesel Truck Mechanic at Southside Service, Stonewall
★ ★ ★ ★ ★

“I highly recommend these guys! Got stranded on the freeway during the holidays with a broken alternator. Pat was out there within 15 min to help me out and diagnose my Colorado to see if anything else got messed up when my alternator took blew up on me. Had me up and running just over a hour. Which wasn’t to bad considering the auto store we went to sold us the wrong alternator said it was the only one they had in stock for my truck. When we went back to get our money back and go to the other store he magically found the right one in the back and was almost $200 cheaper than the one he sold us earlier. And pat handled that situation like a professional. Didn’t say nothing or anything to the guy about lying to us saying only had one in stock on trying to upsell us. Rates for the last min on holiday weekend couldn’t beat it anywhere and the efficiency is unmatched. Thank you again pat !”

Jorge Minchey • Diesel Truck Mechanic at Iron Hand Diesel Repair, Stonewall
For shop owners

Get More Customers
Through Boommar

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

• Online Booking
• Lead Tracking
• Review Management
• Listing Analytics
Stonewall 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 Stonewall, MB

Need a reliable mechanic for Diesel Truck Mechanic in Stonewall? We've verified 4 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 Stonewall? +
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 Stonewall? +
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+).