Transmission Repair & Rebuild in Winnetka, CA
Automatic & Manual — All Makes & Models
Call (818) 882-5135Winnetka's Trusted Transmission Specialists
At A1 Transmission, we have been rebuilding and repairing transmissions in Winnetka and the San Fernando Valley for over 35 years. Whether your vehicle has an automatic or manual transmission, our certified technicians have the expertise to diagnose and fix the problem right — the first time.
We service all makes and models, including domestic and foreign vehicles, trucks, SUVs, and performance cars. Our shop is conveniently located at 20146 Saticoy Street B1, Winnetka, CA 91306, and we proudly serve customers from Chatsworth, Canoga Park, Reseda, Northridge, and the entire San Fernando Valley.
Signs You Need Transmission Repair
- Slipping gears — engine revs but the car doesn't accelerate
- Delayed or rough shifting between gears
- Burning smell or dark, burnt transmission fluid
- Grinding or shaking when changing gears
- Check Engine light or Transmission Warning light is on
- Leaking red or brown fluid under your vehicle
- Car won't go into gear or is stuck in one gear
Our Transmission Rebuild Process
A full transmission rebuild is a comprehensive repair that involves disassembling the entire transmission, inspecting every component, and replacing all worn or damaged parts with OEM-quality components. Here is what you can expect from our process:
- Free Diagnostic: We start with a thorough inspection and road test to identify the root cause of the problem — no guessing.
- Transparent Estimate: We provide a clear, itemized quote before any work begins. No surprises.
- Full Disassembly & Inspection: Our technicians disassemble your transmission and inspect every gear, clutch pack, seal, and bearing.
- Quality Parts: We use high-quality replacement parts to ensure long-lasting performance.
- Reassembly & Testing: After rebuilding, we test your transmission on the road to confirm it shifts smoothly and performs correctly.
Our Warranty
All transmission repairs at A1 Transmission are backed by our 12,000-mile / 1-year warranty on parts and labor, whichever comes first. We stand behind every job we do. You'll drive away with confidence knowing your vehicle is covered.
Why Choose A1 Transmission in Winnetka?
- 35+ years of transmission repair experience
- BBB A+ rated auto repair shop
- Free diagnostic for every vehicle
- Honest, upfront pricing — no hidden fees
- 12,000-mile / 1-year warranty on parts & labor
- Serving Winnetka & the San Fernando Valley since 1989