ASL Auto Works
Transmission Repair Tullamarine — ASL Auto Works workshop in Tullamarine
Tullamarine, Melbourne
Diagnostic Scan First
AT, MT, CVT & DSG
12-Month Warranty

Transmission Repair Tullamarine

Slipping gears, harsh shifts, judder on take-off or transmission warning light? We scan for fault codes, check fluid colour and smell, and quote before any work starts.

Call 03 9650 2890
4.9
182+ Google Reviews
Roadworthies
Certified & Licensed
15+
Years Experience
All
Makes & Models

Honest Transmission Diagnosis and Repair in Tullamarine

Transmission problems are where shops are quickest to quote a rebuild. Our approach at 6 Garden Dr is different: we scan the transmission control module for fault codes, check fluid colour and smell (clean red is healthy, brown and burnt is a warning, black and burnt is past it), road-test under load, and run a line-pressure test where needed. A lot of jobs that get sold as full rebuilds are actually a solenoid, a valve body, or a fluid and filter service done years too late. Repair where we can, replace only when the unit is genuinely past it.

We service and repair the full range of transmissions you'll find in Tullamarine driveways: conventional automatic (AT) with torque converter, manual (MT), CVT with steel push-belt or chain, DSG dual-clutch on VW, Audi, Skoda and SEAT, ZF 6-speed and 8-speed in BMW, Mercedes and Range Rover, and the AISIN and Jatco autos common in Toyota, Mazda, Subaru and Nissan. Work covers fluid and filter service to manufacturer spec, solenoid pack replacement, valve body repair and replacement, torque converter judder diagnosis and shudder fix flushes, planetary gear set inspection on rebuilds, and full transmission removal and rebuild when nothing else will save it.

Most transmission jobs we see come from Tullamarine, Gladstone Park, Westmeadows, Airport West and Broadmeadows drivers — DSG mechatronic faults on Golfs and Tiguans, CVT shudder on Nissan and Subaru, harsh shifts on Ford and Holden 6-speeds, slipping on older AT cars that have never had a fluid change. We diagnose first, quote honestly, and explain whether the repair is worth it on your car. 12-month warranty on parts and labour. Afterpay, Zip and Humm available.

What's Included in Every Car Service

Every transmission job at our Tullamarine workshop starts with a proper diagnostic scan and a fluid check — colour, smell and level — not a guess at the shift quality.

Oil & filter change
Brake inspection & fluid check
Tyre check & pressure adjustment
Steering & suspension check
Air filter inspection
Spark plug inspection
Belts & hoses inspection
All fluid level checks
Exhaust system inspection
Lights & electrical check
Windscreen wiper inspection
Battery test
Cooling system inspection
Tyre rotation
Transmission fluid inspection
Full written safety report

Transmission Repairs We Handle

From a fluid and filter service to a full rebuild — every part of the automatic, manual, CVT and DSG driveline, diagnosed and repaired at our Tullamarine workshop.

Diagnostic Scan & Fault Codes

Manufacturer-level scan tools read TCM fault codes, live data, solenoid duty cycles and adaptation values. We tell you exactly which circuit or component the transmission is complaining about — not a guess from the shift feel.

Fluid & Filter Service

Old ATF, CVT or DSG fluid drained, internal filter or strainer replaced, pan and magnet cleaned, refilled to manufacturer spec via fill-plug or dynamic-level procedure. Wrong fluid kills transmissions fast — we use the correct spec every time.

Valve Body & Solenoid Pack

Harsh shifts, flaring between gears, or stuck-in-gear faults often trace to a sticky valve body or failed shift solenoid. We remove, inspect, clean and replace solenoid packs or full valve bodies where reconditioning is not viable.

Torque Converter & Shudder

Lock-up clutch shudder at light throttle on a warm engine — classic torque converter symptom. We diagnose with a stall test and line-pressure check, then service the fluid with a friction-modifier fix or replace the converter on rebuild.

DSG, CVT & Manual Repair

DSG mechatronic faults, CVT belt and pulley wear, manual gearbox synchro and bearing repair. Different transmissions, different procedures — we follow the manufacturer service manual on each, not a generic flush-and-pray.

Transmission Rebuild

When fluid service and valve body work cannot save the unit, we remove the gearbox, strip to the case, inspect the planetary gear set, clutch packs, bands and bearings, and rebuild with quality kits. Honest quote on whether the rebuild is worth it on your car before we start.

Certifications & Memberships

VicRoads Licensed Vehicle Tester
VACC — Victorian Automobile Chamber of Commerce Member
ARC — Australian Refrigeration Council Certified

Why Locals Choose ASL Auto Works

4.9 stars across 182 Google Reviews. Tullamarine drivers come to us when they want the actual fault diagnosed — not a blanket rebuild quote.

Upfront Pricing

We tell you the cost before we start. No hidden fees, no surprises on the invoice.

Honest Advice

We explain what your car actually needs — not what pads the bill. Sai and the team keep it real.

All Makes & Models

Japanese, European, American, 4x4s, fleet vehicles. If it has wheels, we can service it.

Fast Turnaround

We know you need your car back. We work efficiently and keep you in the loop from drop-off to pick-up.

What Our Customers Say

4.9· 182 Google Reviews
Read all reviews

Sai provided excellent service for my Roadworthy Certificate. The inspection was completed quickly and professionally, and everything was explained clearly. The process was smooth, honest, and hassle-free from start to finish. Highly recommend to anyone needing a Roadworthy Certificate done properly and fast.

Leaa Sara
Google Review

Sai is the best — if you want to know what's really going on with your car, he's your guy. Patient, thorough, and fair prices. He gave me full evidence of parts replaced and a good inspection. Everyone deserves a proper explanation of how their car is doing.

Aaron Rubingo
Google Review

Best service I've ever received. As someone who doesn't know much about cars, I was impressed with how clearly the mechanic explained what needed repairing — they even showed me pictures. I truly felt like I could trust them completely. A trustworthy and reliable place.

Evelyne
Google Review

Ready to Book?

Book online in minutes or give us a call. We're open Mon–Fri, 8am–5pm.

Call 03 9650 2890

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Common Questions

Straight answers to what most customers ask.

Find Us

We're easy to find in Tullamarine, just minutes from the airport.

Address

6 Garden Dr, Tullamarine VIC 3043

Heads up: the storefront entry is on Garden Drive — not Rosto Court.

Hours

  • Monday – Friday8:00am – 5:00pm
  • SaturdayClosed
  • SundayClosed
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Areas We Serve

Transmission work comes to us from drivers across the area:

TullamarineGladstone ParkWestmeadowsAirport WestEssendonBroadmeadowsGreenvaleStrathmoreNiddrieKeilor EastKeilor ParkPascoe ValeGlenroyCoolarooRoxburgh ParkCampbellfieldFawknerOak ParkMoonee PondsAscot ValeAvondale HeightsSunburyCraigieburnMicklehamSomerton