Transmission Shops in Oshawa, ON

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

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Classic Auto Repair
Oshawa • ≈ 10 km
CL
1333 Boundary Rd Unit 3, Oshawa, ON L1J 6Z7, Canada, Oshawa
★ 5.0
42 Google reviews
Response ≈ 56 min $$$ • Quotes free
Transmission
📞 (905) 434-1333 Free quote • Verified
Otis Gear
Oshawa • ≈ 7 km
OT
1333 Boundary Rd, Oshawa, ON L1J 6Z7, Canada, Oshawa
★ 5.0
52 Google reviews
Response ≈ 55 min $ • Quotes free
Transmission
📞 (905) 721-8041 Free quote • Verified
Parts Plug
Oshawa • ≈ 10 km
PA
1115 Wentworth St W Unit C5B, Oshawa, ON L1J 8P7, Canada, Oshawa
★ 4.8
270 Google reviews
Response ≈ 46 min $$ • Quotes free
Transmission Suspension & SteeringFuel System
📞 (905) 432-7584 Free quote • Verified
Durham Transmission Service
Oshawa • ≈ 5 km
DU
1450 Townline Rd N, Oshawa, ON L1K 2Y4, Canada, Oshawa
★ 4.7
61 Google reviews
Response ≈ 20 min $$ • Quotes free
Transmission
📞 (905) 579-3255 Free quote • Verified
Boss Auto Service
Oshawa • ≈ 6 km
BO
222 Rolson St, Oshawa, ON L1G 7Y9, Canada, Oshawa
★ 4.6
177 Google reviews
Response ≈ 16 min $$$ • Quotes free
Transmission
📞 (905) 725-0909 Free quote • Verified
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Oshawa customer reviews

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Verified Reviews for Transmission
★ ★ ★ ★ ★

“Good prices, great service. Wish Google had 10 star rating.”

T Dog • Transmission at Classic Auto Repair, Oshawa
★ ★ ★ ★ ★

“I had a really bad experience at another shop on Bond St W in Oshawa, and I came to Boss Auto feeling frustrated and unsure. From the moment I walked in, Moody took the time to listen and made me feel like I was finally being taken seriously.

He was honest, straightforward, and didn’t try to upsell me on anything I didn’t need. Moody quickly figured out the issue that the other shop either missed or didn’t fix properly, and got my car running the way it should. The work was done efficiently, and the pricing was fair for the quality of service.

It’s hard to find a mechanic you can trust, but Moody at Boss Auto definitely earned mine. If you’ve had a bad experience somewhere else, I’d strongly recommend giving them a chance—they really helped turn things around for me.”

Daniel Torres • Transmission at Boss Auto Service, Oshawa
★ ★ ★ ★ ★

“Best mechanic in Durham”

MGxR • Transmission at Classic Auto Repair, Oshawa
★ ★ ★ ★ ★

“Highly recommend! Had my car serviced yesterday due to brakes and can’t thank Boss auto service enough. Moody was very knowledgeable and safely got my car back on the road in no time. Naomi was so kind and welcoming at the desk - Both her and Moody really made a stressful situation much more manageable. The light at the end of the tunnel was the smooth ride home at a very good price in today’s market; no complaints. I didn’t hide the fact that I am unfortunately the female stereotype who knows nothing about cars and really appreciated that they took extra time to explain things to me and did not take advantage of that fact whatsoever. Very honest and sweet people. Another gentlemen (unfortunately I didn’t catch his name at the desk) even reminded me to watch my step on the way out which I really appreciated as I have health issues that affect my balance and those little kind gestures make a big difference. For any future auto repairs I know exactly where to go from now on. Thanks again to the whole team - Hope they each get some recognition for their great work and amazing customer service.”

D W • Transmission at Boss Auto Service, Oshawa
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Find a Best Transmission in Oshawa, ON

Boommar lists 5 verified mechanics in Oshawa. 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 Oshawa? +
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.