TAKING AUTO REPAIR TO THE NEXT LEVEL

Service and vehicle repair all in one!

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SQUEAKING OR SQUEALING?

Our expert mechanics can help you change your brakes

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YOUR TRUSTED SOURCE FOR AUTO REPAIR

Visit us and see why we are the best choice!

SERVICES OFFERED

MAKING SURE YOUR ENGINE RUNS SMOOTH

Vehicle repair from the experts!

ENGINE SERVICES

MAKING SURE YOU DRIVE STRAIT

Maintenance when you need it!

ALIGNMENT

YOUR SOURCE FOR TIRES

We can help you find the perfect match!

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BIG OR SMALL, WE DO IT ALL

Fleet vehicle repair from the experts!

FLEET SERVICES

We're open! Dependable Auto Repair In Granger

Whether you need your brakes serviced, oil changed, battery replaced or other auto repairs, Tiernan's Service Center in Granger is here to help. Save time by calling 515-577-5643 to schedule an appointment or just stop by at 2200 Kennedy St and drop your vehicle off at our repair shop.

Tiernan's Service Center Offers Auto Repair Services You Can Count On!

Tiernan's Service Center has been providing customers in the Granger, IA 50109 area with high-quality automotive maintenance and repair services since 2011. Our experienced mechanics will get your vehicle up and running again, and we'll keep it in top operating condition.

We provide a range of services, including 4x4 Services, Alignment, Brakes, Car & Truck Care, Domestic Cars & Trucks, Electrical Services, Electronic Services, Engine & Transmission, Engine Maintenance, Fleet Brakes, Fleet Drive Train, Fleet Electrical, Fleet Electronics, Fleet Engine Work, Fleet Front End Services, Fleet General Services, Fleet Suspension Work, Fleet Tires, Fleet Trailer Work, Fleet Wheel Services, General Services, Heating and Cooling Services, Heavy Duty Repair, Import Cars & Trucks, Miscellaneous Services, Quick Lube Services, Small Engine Repair, Tires, Towing, Transmission Services and Undercar Services. We're proud of our great mechanics, who have years of experience working on many different types of vehicles. They have the knowledge required to diagnose your problems, and to find affordable solutions to get you back on the road quickly.

To learn more about our services, call us at 515-577-5643 or email us today. We're looking forward to earning your trust as a friendly, honest and reliable alternative for your auto maintenance and repair needs in Granger.

  • Interstate Batteries
Confidence Plus North American Warranty

Services

Areas We Serve

Vehicle Tips

According to recent studies, 5 percent of all motor vehicle fatalities are clearly caused by automobile maintenance neglect.

The cooling system should be completely flushed and refilled about every 24 months. The level, condition, and concentration of coolant should be checked. (A 50/50 mix of anti-freeze and water is usually recommended.)

Never remove the radiator cap until the engine has thoroughly cooled. The tightness and condition of drive belts, clamps and hoses should be checked by a pro.

Change your oil and oil filter as specified in your manual, or more often (every 3,000 miles) if you make frequent short jaunts, extended trips with lots of luggage or tow a trailer.

Replace other filters (air, fuel, PCV, etc.) as recommended, or more often in dusty conditions. Get engine drivability problems (hard stops, rough idling, stalling, diminished power, etc.) corrected at a good shop.

A dirty windshield causes eye fatigue and can pose a safety hazard. Replace worn blades and get plenty of windshield washer solvent.

Have your tires rotated about every 5,000 miles. Check tire pressures once a month; let the tires cool down first. Don't forget your spare and be sure your jack is in good condition.

Check your owner's manual to find out what fuel octane rating your car's engine needs then buy it.

Keep your tires inflated to the proper levels. Under-inflated tires make it harder for your car to move down the road, which means your engine uses more fuel to maintain speed.

Lighten the load. Heavier vehicles use more fuel, so clean out unnecessary weight in the passenger compartment or trunk before you hit the road.

Use the A/C sparingly. The air conditioner puts extra load on the engine forcing more fuel to be used.

Keep your windows closed. Wide-open windows, especially at highway speeds, increase aerodynamic drag and the result is up to a 10% decrease in fuel economy.

Avoid long idling. If you anticipate being stopped for more than one minute, shut off the car. Contrary to popular belief, restarting the car uses less fuel than letting it idle.

Stay within posted speed limits. The faster you drive, the more fuel you use. For example, driving at 65 miles per hour (mph) rather than 55 mph, increases fuel consumption by 20 percent.

Use cruise control. Using cruise control on highway trips can help you maintain a constant speed and, in most cases, reduce your fuel consumption.

Keep your engine tuned. A fouled spark plug or plugged/restricted fuel injector can reduce fuel efficiency as much as 30 percent.

Inspect the engine's belts regularly. Look for cracks or missing sections or segments. Worn belts will affect the engine performance.

Have the fuel filter changed every 10,000 miles to prevent rust, dirt and other impurities from entering the fuel system.

Change the transmission fluid and filter every 15,000 to 18,000 miles. This will protect the precision-crafted components of the transmission/transaxle.

Inspect the suspension system regularly. This will extend the life of the vehicle's tires.

What Our Customers Are Saying

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I've never experienced better customer service in my life.
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Best service ever!
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Good service. Ask for mark
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Great place.
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Mark is great to work with.
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Nice place wether you need an oil change or major work done to your vehicle. Mark and the crew are honest and diligent in getting your vehicle in and out quickly.
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As honest as they come. Great service !
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Mark and his team offer top notch service. Thanks guys!
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Finding a shop you trust is tough to find. I grew up around my father's auto service shop and learned from him how to do things properly. I saw time and time again the effects of poor workmanship. I can tell you that this is a place that takes pride in doing quality work and has quality service at fair prices, and doesn't try to sell you a bunch of service you don't really need. I highly recommend Tiernan's Service Center!
ACDelco
ASE (Automotive Service Excellence)
IDENTIFIX
BBB Accredited Business
NFIB (National Federation of Independent Business)
AutoWares - Auto Value - CSC
Car Care Aware