Chevy & GMC Repair in Modesto, CA
From work trucks to family SUVs, Chevrolet and GMC vehicles keep the Central Valley moving. Auto Alternatives is Modesto’s independent GM specialist. Silverados, Sierras, Tahoes, Suburbans, Yukons, Colorados, Canyons, Malibus, Equinoxes, Terrains, Traverses, Acadias — we service them all.
📞 Repair & Mechanic: (209) 424-7905
📞 Body Shop & Collision: (209) 988-9824
Why Chevy & GMC Owners Choose Auto Alternatives
- Half the dealership price on the same repair
- Same-week appointments
- Free loaner cars
- Duramax diesel capable — we service diesel Silverados and Sierras
- Warranty stays intact — federal law protects your right to use an independent shop
Chevy & GMC Services We Provide
Chevy Silverado & GMC Sierra
Full service on both light-duty and HD trucks. 5.3 V8, 6.2 V8, and 6.6 Duramax diesel engines. Transmission, drivetrain, and 4WD service.
Chevy Tahoe, Suburban, GMC Yukon
Complete service on full-size SUVs including AC systems (major Modesto summer issue), 4WD service, and suspension work.
Chevy Colorado, GMC Canyon
Mid-size truck service including 2.8 Duramax diesel Colorado/Canyon models.
Chevy Cars (Malibu, Impala, Camaro, Cruze)
Full engine, transmission, and drivetrain service on Chevy cars including performance work on Camaro.
Common Chevy/GMC Repairs We See Every Week
- AFM (Active Fuel Management) lifter failure on 5.3 V8 (widespread issue)
- Timing chain replacement on LGX 3.6 V6
- Duramax injector service and replacement
- Allison transmission service on HD Duramax trucks
- DPF regeneration on Duramax
- Water pump replacement on 5.3 and 6.2 V8
- Oil consumption on 2.4 Ecotec engines
- 4WD actuator and transfer case service
- Power steering rack replacement
Duramax Diesel Specialists
Central Valley Duramax owners work their trucks hard — towing, hauling, and long distance driving. We service:
- All Duramax generations (LB7, LLY, LBZ, LMM, LML, L5P)
- Injector diagnostics and replacement
- DPF regeneration and cleaning
- Emissions system service
- Fuel system diagnostics
- Allison transmission service
Body Work & Collision for Chevy & GMC
Our Body Shop & Collision Center handles Chevy and GMC collision repair at $595 per panel flat rate. Color matching for all GM factory paints. Insurance claims handled start to finish.
Frequently Asked Questions
Do you service Duramax diesel trucks?
Yes. All Duramax generations. DPF service, injector work, and Allison transmission service.
Can you fix AFM lifter failure on 5.3 V8?
Yes — this is one of the most common repairs we see on 2014+ Silverados, Tahoes, and Suburbans. We can also install a delete kit if you prefer to eliminate the AFM system entirely.
Will servicing my Chevy/GMC at Auto Alternatives void my warranty?
No. Federal law (Magnuson-Moss Warranty Act) protects your right to use any qualified independent shop.
How much cheaper are you than the dealership?
Typically 30–50% less on the same repair. Written estimate before starting.
Do you service older Chevys and GMCs?
Yes. We regularly service GM vehicles going back to the 1990s. These trucks and SUVs run forever with proper maintenance.
Modesto’s Trusted GM Shop
Silverados, Sierras, Tahoes, Duramax — we service them all. Half the dealership price. Same-week appointments.
📞 Repair & Mechanic: (209) 424-7905
📞 Body Shop & Collision: (209) 988-9824
📍 442 Galaxy Way, Modesto, CA 95356 (Repair) · 623 Bangs Ave, Modesto, CA 95356 (Body Shop)