Business Details
47 Years
experience
Your Trusted Auto Repair Experts in Walnut Creek
Diablo Auto Specialists has been a trusted name in automotive repair and service since 1979, serving Walnut Creek and the surrounding communities. Our ASE-certified master technicians combine decades of experience with state-of-the-art tools to deliver superior diagnostics, maintenance, and repairs for both domestic and import vehicles. As a family-owned business now part of the Autoworx family since 2022, we prioritize transparency, trust, and customer satisfaction, offering a 36-month/36,000-mile nationwide warranty on all repairs. Our commitment to excellence is reflected in our 5-star Google rating and decades of loyal customers.We specialize in factory-scheduled maintenance, brake systems, transmission services, and hybrid vehicle repairs, ensuring every client receives personalized, expert care. Same-day service, free digital inspections, and military/first responder discounts further underscore our dedication to convenience and value. With a legacy of integrity and a focus on staying ahead of industry advancements, Diablo Auto Specialists remains the go-to choice for drivers seeking reliable, honest, and professional automotive care.
Services
Brake Repair
Oil Changes
Transmission Service
AC Condenser Replacement
Tire Services
Factory Maintenance
Hybrid Battery Replacement
Engine Diagnostics
Suspension Repair
Computer Diagnostics
Details
- Year established: 1979
Highlights and features
- We offer 40+ years of experience in automotive repair and diagnostics.
- Our team includes ASE-certified master technicians with ongoing industry education.
- We provide a 36-month/36,000-mile nationwide warranty on all repair work.
- Same-day service available for most requests with advance scheduling.
- Military and first responder discounts demonstrate our community commitment.
Associations and certifications
- ASE (Automotive Service Excellence)
What people say
5 star review
Excellent service
Trustworthy advice
Prompt turnaround
Family friendly environment
Services
Brake Repair
Our ASE-certified technicians provide comprehensive brake system diagnostics and repairs, including pad replacement, fluid changes, and ABS troubleshooting. We inspect discs, rotors, lines, and hoses to ensure safety and performance. Same-day service is available for most brake repairs, backed by a 36-month/36,000-mile warranty.
AC Condenser Replacement
Specializing in automotive air conditioning systems, we diagnose and replace faulty condensers to restore cooling efficiency. Our technicians use UV dye testing to identify leaks and ensure proper refrigerant levels. Repairs include 36-month warranty coverage and same-day turnaround when parts are available.
Oil Changes
We perform oil changes using high-quality lubricants and filters, following factory-recommended intervals. Technicians check fluid levels, inspect vehicle systems, and provide digital inspection reports. Service includes tire pressure checks and complimentary maintenance advice.
Transmission Service
Our master-certified technicians handle transmission fluid changes, radiator services, and complete rebuilds for domestic and import vehicles. We use original-equipment-quality parts and diagnostic tools to ensure reliability, backed by a 36-month/36,000-mile warranty.
Factory Scheduled Maintenance
We follow manufacturer guidelines for 7.5K to 120K-mile services, including tune-ups, fluid replacements, and component inspections. Technicians explain all recommended services and provide itemized pricing. Preventive maintenance helps avoid costly repairs and extends vehicle longevity.
People
Bill Adams
Owner
Bill Adams brings decades of independent auto repair experience to Diablo Auto Specialists, overseeing operations since its acquisition by Autoworx in 2022. With prior ownership of successful service centers in Castro Valley and Albany, he focuses on maintaining the shop's legacy of technical excellence and customer trust.
Melissa Brunson
Owner
Melissa Brunson co-owns Diablo Auto Specialists with Bill Adams, leveraging extensive experience in independent automotive service. She ensures the shop maintains its reputation for honest repairs and personalized customer care while integrating best practices from the broader Autoworx network.
Tim Stussi
Former Owner
Tim Stussi founded Diablo Auto Specialists in 1979 and built its reputation as Walnut Creek's top-rated repair shop. He and Cathy Stussi operated the business for over four decades before passing the mantle to Bill Adams and Melissa Brunson in 2022.
Questions
How often should I rotate my tires?
Rotate tires every 6,000 miles or every other oil change to prevent premature wear and ensure even tread life.
Is timing belt replacement really necessary?
Yes. A broken timing belt can cause severe engine damage. Replacement at recommended intervals prevents costly repairs.
What does the check engine light indicate?
The check engine light signals sensor or component issues affecting engine performance. Address promptly to avoid long-term damage.
What should I do if my car overheats?
Pull over safely, turn off the engine, and have your vehicle towed to Diablo Auto Specialists. Do not check hot coolant levels.
When should I replace my spark plugs?
Replace spark plugs every 30,000 miles or 30 months for optimal performance, unless your vehicle has 100,000-mile platinum plugs.
Can I use synthetic motor oil?
Yes. Synthetic oil benefits high-performance, turbocharged, or extreme climate vehicles. It improves fuel economy and extends change intervals.
