Our Services
Complete Auto Care & Transmission Services In Lake St. Louis, MO
Over 45 Years Serving St. Charles County
Here at Advance Transmissions & Complete Auto Care, we’re proud to serve drivers in Lake St. Louis, O’Fallon, Wentzville, St. Peters, St. Charles, and the surrounding communities. With over 45 years of experience behind us, we diagnose quickly, repair thoroughly, and tell you the truth about what your vehicle actually needs. What started as a transmission specialist has grown into a full-service shop—so whether you need a routine oil change or a complete rebuild, it’s all handled here, by the same certified technicians, under one roof.
Our Specialty: Transmission Work
Transmissions are what built our reputation—the work other shops send our way. We handle the full range:
- Transmission diagnostics: Before anyone talks rebuild, we find out what’s actually wrong. Sometimes it’s fluid or a sensor, not a failure—and we’ll tell you when it is.
- Transmission repair: A targeted fix of the failed component while the unit stays largely intact, when that’s the right call.
- Transmission rebuild: A full teardown and rebuild when damage is extensive—backed by our 3 year / 100,000 mile warranty.
- Transmission replacement: When a rebuild isn’t the smart call for your vehicle’s age and value, we’ll tell you that too.
- Clutch repair & replacement: A failing clutch in a manual only gets worse—and more expensive—the longer it waits.
Browse the full menu of services below, or get in touch at 636-978-7730 and we’ll point you in the right direction.
3 YEAR or 100,000
MILE WARRANTY
ON OUR REBUILT TRANSMISSIONS!
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Full-Service Auto Repair & Maintenance
One shop for everything your vehicle needs—from a routine oil change to a complete transmission rebuild. Tap any service to learn more, or book online in seconds.
Maintenance
Oil Changes
Conventional, synthetic blend, or full synthetic—handled by the same certified technicians who rebuild transmissions. Free multi-point inspection every time.
Battery Service
We test the battery, the alternator, and the starter, so you replace the part that actually failed—not the one that was easiest to guess.
Preventive Maintenance
Scheduled service that keeps small problems small. And servicing with us will never void your factory warranty.
Multi-Point Inspection
A free health check of your vehicle’s key systems with every service visit. No charge, no pressure, no obligation.
Repair
Brake Repair
Squealing or grinding? We measure pads and rotors against spec and recommend only what your safety actually requires.
A/C Repair & Recharge
Blowing warm? We diagnose before we recharge, so a leak doesn’t leave you hot again in three weeks. Ask about $20 off your A/C diagnostic.
Transmission Repair
Targeted repairs that fix the failed component rather than replacing the whole unit—when that’s genuinely the right call.
Transmission Rebuild
The work other shops send our way, backed by our 3 year / 100,000 mile warranty on rebuilt transmissions.
Diagnostics & Inspections
Engine Diagnostics
Check engine light on? A trouble code names the system, not the cause. We test to find the real problem before you buy any parts.
Transmission Diagnostics
Slipping or shifting hard? A transmission problem doesn’t always mean a rebuild—and we’ll tell you when it doesn’t.
Electrical Diagnostics
Dead battery, blown fuses, or gremlins nobody else could find? We trace faults to the source instead of guessing.
Vehicle & Motorcycle Inspections
Standalone inspections, including pre-purchase checks before you buy used. And yes—we inspect motorcycles.
COMING SOON: Tires • Alignments • Missouri State Inspections
Don’t Wait
Until It’s Too Late!
Bring your vehicle to us for preventive maintenance and watch it last for years to come.
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Money Today
Save $200–$500 on qualifying repairs, get $20 off an A/C diagnostic, and more. See all current offers.