Transmission repair covers the faults that can be fixed without rebuilding the whole unit: solenoids, valve body issues, speed sensors, wiring, seals and fluid problems. AutoTech Clinic diagnoses these at our Dearborn shop with a scan tool, a fluid inspection and a road test before quoting anything.
A great many transmissions arrive here condemned by someone else and leave repaired. Testing first is the difference between a solenoid and a rebuild, and that is a very large difference in your bill.
- How Long
- From a few hours for solenoids and sensors to several days for internal repair.
- Same Day
- Time frame confirmed before you leave the car.
- Vehicles
- Foreign and domestic, cars through trucks.
Signs You Need Transmission Repair
- The engine revs higher but the car does not speed up with it
- A hard bang or a long delay between gears
- The transmission will not shift out of a single gear (limp mode)
- A check engine light with transmission codes
- Red or brown fluid under the front of the car
- A shudder at steady speed that feels like driving over rumble strips
What We Do
- 01
Scan Every Module
We read transmission codes, live data and adaptive values. Modern transmissions learn your driving, and those stored values tell us a great deal about wear.
- 02
Inspect the Fluid
Level, color and smell. Bright red and clean is healthy, dark brown with a burnt smell means heat damage has already happened.
- 03
Road Test Under Load
We drive the car through every gear and under load, watching line pressure and gear commands against actual gear on the scan tool.
- 04
Test the Cheap Causes First
Low fluid, a failed sensor, a wiring fault, a bad ground or a collapsed motor mount all mimic transmission failure. We rule them out before anything bigger.
- 05
Repair and Relearn
After the repair we reset and relearn the adaptive values where the vehicle requires it, then road test again to confirm shift quality.
Things That Feel Like a Transmission and Are Not
A collapsed engine or transmission mount makes every shift feel like a bang, because the whole drivetrain moves before it engages. A failing wheel speed sensor can put a transmission into limp mode. A worn CV axle clicks and vibrates in a way many drivers read as a transmission.
We check all of those as part of the diagnosis. It costs you nothing extra and it has saved plenty of people from a rebuild they did not need.
Why Heat Is the Enemy
Almost every automatic transmission failure traces back to heat. Fluid that runs hot oxidizes, loses its friction properties and stops protecting the clutch packs. Towing, heavy stop and go traffic on Michigan Ave and a plugged cooler all push temperatures up.
That is why fluid color and smell matter so much in the diagnosis, and why a transmission cooler is a sensible addition on a vehicle that tows.
What Affects the Cost
We quote your vehicle specifically after inspecting it, because these are the things that move the number up or down:
- Whether the fault is external (sensors, wiring, mounts) or internal
- Valve body and solenoid work versus clutch pack damage
- How much fluid the unit holds and which specification it needs
- Whether the transmission has to come out to reach the failed part
- Programming or adaptive relearn requirements after the repair
Call (313) 277-7200 with your year, make and model and we will tell you what to expect before you come in.
Why AutoTech Clinic
AAA Approved
An inspected facility that has to meet AAA standards for equipment and training.
Photos First
You see what we found and approve the price before anything is taken apart.
Same-Day Service
Parts on hand for the vehicles we see most, so you are not waiting on a delivery.