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24-Hour Rush Repair
Transmission bench · Fontana, CA
Truck Transmission Repair in Fontana
A transmission rarely fails all at once — it warns you with slip, grind, whine and hard shifts, then it quits under load. Our Fontana shop rebuilds truck transmissions properly: full teardown, wear measured and documented, clutch packs, bearings, gears and shafts replaced or manufactured as needed, and road testing before release.
Transmission bench · Fontana, CA
Manual, automatic and everything bolted to them
We rebuild manual and automatic truck transmissions and handle the surrounding driveline: clutches, flywheels, differentials, driveshafts and transfer cases. Because our gear shop cuts and manufactures gears and shafts in-house, a transmission with a damaged or discontinued gear is a rebuild candidate here instead of a write-off.
Brands we serviceAllisonEatonFullerMeritorDana SpicerZFDetroitAisin
Truck Transmission Repair in Fontana · Fontana, CAHow to catch it early
Slipping under load, delayed engagement, grinding into gear, metallic noise in neutral, or burnt-smelling fluid — each is a reason to inspect now, while the rebuild is still the cheap version. Regular hours Monday–Friday 6 AM–5 PM; rush line around the clock; free pick-up, delivery and quotes.
- Transmission rebuilding — manual and automatic
- Clutch replacement and flywheel service
- Differential rebuilding
- Driveshaft and driveline repair
- Obsolete gear and shaft manufacturing
Our 8-step repair process
A clear path from the first call to a tested component or machine returned to work.
Inspection
Disassemble and evaluate the complete failure.
Photos & video
Document condition and findings for a clear repair conversation.
Repair quote
Define the recommended work and quote before proceeding.
Approval
Confirm scope, urgency and the practical path forward.
Manufacturing
Machine, weld, rebuild or reverse engineer required components.
Testing
Verify operation and workmanship before release.
Shipment
Return the completed component or equipment to service.
Frequently asked questions
Do you rebuild automatic truck transmissions?
Yes — automatic and manual transmissions are both rebuilt here, along with differentials and driveline components.
My transmission only slips when hot and loaded. Is it failing?
That is a classic early failure pattern. An inspection now usually costs far less than the tow and the collateral damage later.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
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