Diesel Transmission Service & Repair
Ford PowerStroke, Dodge Cummins & Chevy Duramax — Rancho Cucamonga, CA
From a simple service to a ground-up rebuild, we've got your transmission covered.
A diesel makes big torque, and the transmission takes the hit. Whether yours is slipping, shifting hard, or due for service, we fix it right — automatic or manual.
714-470-7478 · 8880 Archibald Ave Unit H, Rancho Cucamonga, CA 91730
Your transmission works as hard as your engine — harder, when you're towing. Slipping gears, harsh or delayed shifts, a burnt fluid smell, or a warning light are all signs it needs attention before a small problem becomes a rebuild.
We service, rebuild, and replace automatics and manuals, and we diagnose carefully before we recommend anything. If a fluid service and shift kit will fix it, that's what you'll get — we don't sell you a rebuild you don't need.
» Digital Inspections Now Available
Buying a used diesel? Get a full pre-purchase digital inspection — photos included. We walk the truck bumper to bumper and send you a clear, itemized report straight to your phone, so you see exactly what you're buying before you sign.
Ask about a pre-purchase inspection → 714-470-7478
Diesel Truck Transmission Services
Fluid service, shift kits, rebuilds, and replacements for automatics and manuals — built to hold up to diesel torque.
- Automatic transmission fluid service
- Automatic transmission rebuilding
- Automatic transmission replacement
- Automatic transmission coolers
- Shift kit installation
- Warning light diagnosis
- Manual transmission service & replacement
- Manual transmission clutch service & replacement
- Transmission mount replacement
CAREFUL DIAGNOSIS
Diagnose First, Then Fix
A transmission rebuild is a big ticket — so we make sure it's actually needed.
We diagnose the real cause before we recommend the repair, so you're not paying for a teardown when a service would've done it.
Done right the first time, never rushed.
PARTS & WARRANTY
OEM Parts, Backed in Writing
• OEM parts only, covered by a 2-year / unlimited-mile warranty
• NAPA parts covered by the NAPA 12-month / 12,000-mile warranty
• All OEM filters in stock and a large parts inventory — less downtime waiting on parts