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Transmission Shops in St. Thomas, ON

Find trusted transmission services in St. Thomas. Compare prices, read reviews, and book online.

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TruMechanic Truck Services Ltd
St. Thomas • ≈ 2 km
TR
TruMechanic Truck Services Ltd
66 Progress Dr, St Thomas, ON N5P 4G5, Canada, St. Thomas
★ 5.0
60 Google reviews
Response ≈ 34 min • $ • Quotes free
Transmission Truck MechanicDiesel Truck Mechanic
📞 (647) 674-1777 • Free quote • Verified
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Gurr Auto
St. Thomas • ≈ 9 km
GU
Gurr Auto
845 Talbot St, St Thomas, ON N5P 1E5, Canada, St. Thomas
★ 4.8
315 Google reviews
Response ≈ 16 min • $$ • Quotes free
Transmission Auto MechanicDiesel Truck Mechanic
📞 (519) 637-9861 • Free quote • Verified
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Mister Transmission
St. Thomas • ≈ 2 km
MI
Mister Transmission
261 Talbot St, St Thomas, ON N5P 1B3, Canada, St. Thomas
★ 4.6
144 Google reviews
Response ≈ 30 min • $ • Quotes free
Transmission
📞 (519) 633-2800 • Free quote • Verified
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The Auto Guys
St. Thomas • ≈ 4 km
TH
The Auto Guys
135 S Edgeware Rd, St Thomas, ON N5P 4C4, Canada, St. Thomas
★ 4.6
193 Google reviews
Response ≈ 17 min • $$ • Quotes free
Transmission Auto MechanicBrake Services
📞 (519) 631-7117 • Free quote • Verified
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Jim's Finish Line Auto Trans
St. Thomas • ≈ 6 km
JI
Jim's Finish Line Auto Trans
200 Ross St, St Thomas, ON N5R 3Y3, Canada, St. Thomas
★ 4.1
37 Google reviews
Response ≈ 24 min • $$ • Quotes free
Transmission
📞 (519) 207-6060 • Free quote • Verified
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Automatics Only
St. Thomas • ≈ 8 km
AU
Automatics Only
280 Edward St unit 14, St Thomas, ON N5P 1Y1, Canada, St. Thomas
★ 3.4
77 Google reviews
Response ≈ 51 min • $ • Quotes free
Transmission
📞 (519) 702-3337 • Free quote • Verified
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St. Thomas customer reviews

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Verified Reviews for Transmission
★ ★ ★ ★ ★

“Great guy. Very knowledgeable and helpful. Very helpful shop”

joshua claus • Transmission at Automatics Only, St. Thomas
★ ★ ★ ★ ★

“I was very happy with the purchase of my tires from the Auto Guys, the guys were friendly and knowledgeable, shout out to Rob who saved my wheel hubs would highly recommend the Guys”

Brian Denney • Transmission at The Auto Guys, St. Thomas
★ ★ ★ ★ ★

“Excellent Service, very cheaper than other”

rauf gill • Transmission at TruMechanic Truck Services Ltd, St. Thomas
★ ★ ★ ★ ★

“Friendly staff, excellent service, and more than fair price! Thanks to Nic, Bob and the team at The Auto Guys!”

A. Chuck Ellison • Transmission at The Auto Guys, St. Thomas
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St. Thomas Pro – last 30 days
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Find a Best Transmission in St. Thomas, ON

Boommar lists 6 verified mechanics in St. Thomas. Compare real reviews, response times, pricing bands, and open bays — then book online.

Common Causes of Transmission Failure

Low or contaminated transmission fluid from neglected maintenance
Overheating from towing heavy loads without a transmission cooler
Worn clutch discs and pressure plates in manual transmissions
Failed solenoids and valve body issues in automatic transmissions
Torque converter failure causing shuddering and overheating
Broken or worn synchronizers making manual shifting difficult

Warning Signs of Transmission Problems

Transmission slipping—engine revs high but the vehicle doesn't accelerate
Harsh, delayed, or jerky shifting between gears
Grinding or shaking sensation when shifting a manual transmission
Transmission fluid leaking (bright red or dark brown fluid)
Check Engine or Transmission Warning light illuminated
Burning smell indicating overheated transmission fluid

Transmission Services Available

Transmission Fluid Flush

Complete fluid exchange to restore clean, functional ATF

Clutch Replacement

Replacing worn clutch disc, pressure plate, and throw-out bearing

Transmission Rebuild

Full teardown, parts replacement, and reassembly

Valve Body Repair

Fixing shift solenoids and hydraulic control circuits

Torque Converter Replacement

Replacing the failed fluid coupling unit

Transmission Replacement

Installing a remanufactured or used replacement unit

Transmission Tips

Check your transmission fluid level and condition monthly—it should be bright red and not smell burnt
Follow the manufacturer's recommended transmission fluid change intervals (usually every 60,000-100,000 km)
Come to a complete stop before shifting between Drive and Reverse
If you tow frequently, install an auxiliary transmission cooler to prevent overheating
Address a minor fluid leak immediately before it causes internal damage
For manual transmissions, don't ride the clutch pedal in traffic—it causes premature wear

Frequently Asked Questions

How much does a transmission rebuild cost in St. Thomas? +
A complete automatic transmission rebuild typically costs $2,500-$5,000 for most vehicles. High-performance or European vehicles can cost $5,000-$8,000+. Manual transmission rebuilds are usually $1,500-$3,000.
How do I know if my transmission needs rebuilding vs. repair? +
If the issue is a single component like a solenoid or sensor, a targeted repair may suffice ($300-$800). If you have slipping, multiple fault codes, and burnt fluid, a full rebuild is usually necessary.
How long does a transmission rebuild take? +
Most transmission rebuilds take 3 to 5 business days. Complex units like CVTs or dual-clutch transmissions may take longer depending on parts availability.
Is a transmission flush safe for my vehicle? +
Yes, when performed correctly by a professional using the proper fluid. However, if your fluid is severely burnt and the transmission is already failing, a flush alone won't fix the underlying mechanical damage.

Transmission in Nearby Cities

Toronto Ottawa Mississauga Brampton Hamilton London Markham Vaughan

Other Services in St. Thomas

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

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