Drivetrain & Differential Repair
Expert drivetrain and differential repair in St Paul, MN. Comprehensive service for transmissions, axles, CV joints, and all drivetrain components.

Your drivetrain is what actually puts power to the wheels — and when it starts whining, clunking, or vibrating, it's not something to ignore. Roy's Service services axles, differentials, CV joints, and driveline components for St Paul drivers, and we catch the wear before it leaves you stranded. Call (651) 776-9494 or book online.
Signs of a drivetrain problem
- Whining, humming, or growling that changes with speed
- Clunking when shifting or accelerating
- Vibration that increases with speed
- Clicking when turning (often CV joints)
- Leaking fluid near the axles or differential
- A burning smell after driving
We diagnose the driveline
Drivetrain noises can come from several places, so we inspect and road-test to isolate the source before recommending anything.
- Road-test to locate the noise and vibration
- Inspect CV joints, axles, and U-joints
- Check differential fluid and condition
- Inspect driveshaft and mounts
What we repair
- CV joints and axle shafts
- Differential service and repair
- Driveshafts and U-joints
- Transfer case service (AWD/4WD)
- Driveline fluid changes
- Wheel bearings and related components
Why early service pays off
A worn CV joint or low differential fluid caught early is a routine fix; ignored, it becomes a failed axle on the side of the road. We'll tell you what's starting to wear so you can plan.
All makes and models
Domestic, Asian, and European vehicles, including AWD and 4WD systems, with the right fluids and quality parts.
Honest, upfront pricing
- Road-test and diagnosis before repair
- A clear price, no surprises
- Straight answers on what's urgent
Why St Paul drivers choose Roy's Service
A 4.8-star reputation for honest driveline work. Serving Saint Paul, South Saint Paul, Stillwater, Mendota, Newport.
Book drivetrain service
Hearing a whine, clunk, or click? Call Roy's Service at (651) 776-9494 or book online.
Frequently asked questions
What's that clicking when I turn?
Often a worn CV joint — get it checked before the axle fails. (651) 776-9494.
My car vibrates at highway speed — what is it?
Could be driveline, axle, or balance related. We road-test to find it.
How often should differential fluid be changed?
It varies by vehicle and use; we'll check it and advise.
Do you service AWD and 4WD?
Yes, including transfer cases and driveline components.
How much does drivetrain repair cost in St Paul?
It depends on the component; we diagnose and quote upfront.
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Drivetrain & Differential Repair across our service area
Ready to get your car looked at?
Schedule online or call (651) 776-9494.
