Transmission & Auto Repair

in Boise, ID & Surrounding Areas

Home Of The 3 Year / 36,000 Mile Warranty

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Restore performance with expert transmission rebuilding for automatic, manual, and CVT vehicles.   >

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Get reliable diagnostics and repairs for slipping, leaking, overheating, or shifting transmission issues.  >

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Keep your vehicle running strong with trusted auto repair, maintenance, brakes, diagnostics, and more.  >


Family-Owned Transmission Repair Shop Serving Boise & the Surrounding Areas

Red Line Transmission is a full service auto repair shop in Boise, ID, that specializes in transmission repair, replacement and maintenance. 

Automatic & Manual Transmission Repair

Transmission Maintenance

Transmission Rebuilding & Replacement

Engine Repair & Replacement

Clutch Repair

Complete Transmission & Auto Repair Services in Boise, ID

Full Service Auto Repair

Factory Auto Maintenance

Oil Change & Tune Up

Brake Repair & Driveline Repair

Performance Upgrades & Accessories

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30+ Years of Trusted Auto Repair Experience in Boise

With more than 30 years experience in automotive care, our team of highly skilled technicians offer fast services at fair prices for all makes and models of foreign and domestic cars, trucks and SUVs. From routine maintenance, such as oil changes and tune ups, to complicated engine diagnostics, brake repair and transmission overhauls, we really do it all and we do it right. Most services are backed by an industry leading warranty and we're happy to honor manufacturer warranties as well. When it is time for car care or transmission repair in Boise give, our local auto shop a call and we will be happy to schedule an appointment for you at your convenience.

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Row of assorted car brand logos on a white background
Row of motorsport sponsor logos in red, black, and white on a white background

As a locally owned business, the team at Red Line Transmission takes pride in assisting our friends and neighbors in Boise, Garden City and the surrounding towns. Weare committed to providing honest auto repair in Boise at the best prices possible. To ensure a quality experience, we've invested in the latest auto and transmission repair equipment to ensure we're able to properly service the cars that enter our nearby auto shop, including the newest vehicles on the road. We understand that the automotive world is changing and becoming more and more technologically advanced, so our techs undergo routine training to ensure we're up to date. No matter what you drive or what problem your car has, we can help. Give Red Line Transmission a call at 208-242-4896 to request a quote for the cost of auto repair in Boise or the surrounding communities. We promise to fix car trouble quickly and correctly and provide the finest dealer alternative maintenance services available.

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Proudly Serving Boise, ID & Surrounding Areas

boise, Id

Garden City, ID

Kuna, ID

Meridian, ID

Star, ID

Eagle, ID

Trusted by Boise Drivers for Transmission & Auto Repairs

Read Our Google Customer Reviews

Disassembled car transmission on a workshop floor with clutch parts and bolts scattered nearby

Our Blog

We invite you to monitor our News Blog for informative articles.

By Red Line Transmission April 30, 2026
By providing both lubrication and hydraulic pressure, transmission fluid plays a crucial role in keeping your transmission healthy and functioning optimally. If your transmission fluid level gets too low, then very expensive problems could develop. By checking your transmission fluid on a monthly basis, you can make sure that the fluid level isn’t dropping to the point that major problems could arise. If low fluid does cause issues with your transmission, you’ll want to be proactive about getting to the shop ASAP. At Red Line Transmission, we specialize in transmission service in the greater Boise area. Our experienced transmission specialists can accurately locate the source of transmission fluid leaks and get right to work on fixing them. Signs of Low Transmission Fluid When transmission fluid gets low, an assortment of issues may arise. With insufficient fluid, a significant delay in shifting could occur because there’s not enough pressure to get gears to change as quickly as they normally would. Low transmission fluid can also prevent your vehicle from going into/staying in certain gears. This could create a significant safety hazard, especially in certain high-speed situations, such as trying to merge or change lanes on the freeway. With low transmission fluid, you might also notice grinding during the shifting process. A visual check will give you a clear-cut sign of low transmission fluid. It’s usually best to check transmission fluid with the engine still on. This is because transmission fluid tends to contract when it cools, which can then give an inaccurate reading on how much fluid you’re actually driving with. If you see on the dipstick that the fluid level has gotten concerningly low, then you could be dealing with a transmission fluid leak, which is something that needs to be promptly addressed. Fluid that appears dark or smells burnt should also be brought to a mechanic’s attention as soon as possible. Transmission Service in Boise, ID When you need transmission service in Boise and the surrounding area, contact Red Line Transmission at  208-375-0098  . At our local transmission shop, we can expertly repair transmission fluid leaks. Feel free to give us a call today to schedule an appointment for any of your vehicle’s repair or maintenance needs !
Close-up of exposed metal gears and a hand using a wrench to adjust a machine assembly
By Red Line Transmission April 30, 2026
When a transmission issue arises, it can quickly worsen and become very costly to take care of. So it’s always best to take preventive measures that reduce the risk of major transmission trouble. At the first indication of a transmission problem, you’ll want to visit the shop. At Red Line Transmission, our local mechanics specialize in transmission service in the greater Boise, ID area. Here are three quick tips for preventing serious transmission problems. Stay Current with Transmission Fluid Exchanges Transmission fluid provides lubrication, cooling, fluid pressure, and rust prevention, making it very important that you’re driving with the right amount of clean fluid. A transmission fluid exchange will empty old dirty fluid and replace it with the correct level of unpolluted fluid. Commonly, cars need their transmission fluid to be exchanged somewhere between 30,000 and 50,000 miles, but you’ll want to refer to your owner’s manual to see your vehicle’s exact requirement. Check Your Transmission Fluid Every Month Transmission fluid should be checked on a monthly basis, even if you don’t suspect there to be a problem. By regularly checking your fluid, you’re much more likely to catch potential issues such as burning fluid or a fluid level that has gotten dangerously low. Transmission fluid is typically best checked with the car still running. Visit the Shop ASAP if You Suspect a Transmission Issue Common signs of transmission trouble include transmission fluid leaks, delayed shifting, rough shifting, and the vehicle abruptly jumping out of gear while driving. If you drive a stick shift, you’ll want to watch out for symptoms of clutch trouble, such as a clutch pedal that feels spongy or sticky, or is making a lot of noise when you step on it/release it. Grinding and burning smells are also common indications of a clutch problem. At the first sign of transmission trouble, you’ll want to get to the shop before the issue escalates. Transmission Repair in Boise, ID When you need transmission repair in Boise and the surrounding area, contact Red Line Transmission at  208-375-0098  . Feel free to give us a call today to schedule an appointment for any of your vehicle’s repair or maintenance needs!
By Red Line Transmission April 30, 2026
For your engine to stay in excellent condition, it’s important to always keep up with oil changes. In your owner’s manual, you’ll find your vehicle’s particular requirements for how often its oil should be changed and what type of oil should be used. At Red Line Transmission, our local mechanics can complete any type of maintenance your vehicle needs, including full-service oil changes in the greater Boise area. Why to Always Follow Your Oil Change Schedule The most important reason to keep up with oil changes is that your engine’s moving parts will be properly lubricated and protected from metal-on-metal contact, which could cause massive damage. And when you get your oil changed, your oil filter will be replaced. This is an important task because a gunked-up filter may not allow oil to circulate through your engine like it’s supposed to. Regular oil changes will also help to prevent engine sludge from building up. When you don’t stay current with oil changes, contaminants can cause your oil to develop a gel-like consistency. This mucky oil may stick to engine parts and fail to provide optimal lubrication. When you get an oil change, this sludgy oil will be emptied from your engine, which will be filled back up with clean oil that is better for its health. Also, when driving with uncontaminated oil, it’ll be easier for heat to be redistributed from your combustion chamber. This will help to keep your engine at a safe temperature while you drive. And by getting your oil changed by an experienced mechanic, it’s possible that a developing engine issue will be spotted. The issue can then be remedied before it escalates and causes bigger engine problems. Oil Change in Boise, ID When you need auto maintenance in Boise and the surrounding area, contact Red Line Transmission at  208-375-0098  . At our local auto shop, we can expertly address your vehicle’s repair or maintenance needs. Feel free to give us a call today to make an appointment !