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Transmission Specialists · Shoreline
North Seattle Transmission has proudly served north King and south Snohomish county communities for over 30 years.

Our story
North Seattle Transmission has proudly served north King and south Snohomish county communities for over 30 years. We are distinguished as the first AAA approved transmission shop in the U.S., a testament to our enduring commitment to quality service.
Our team comprises ASE certified technicians, and we are proud members in good standing of ATRA (Automatic Transmission Rebuilders Association) and TRNI (Transmission Rebuilders Network International). This expertise allows us to provide reliable transmission repair, rebuilding, and maintenance for any foreign or domestic car, truck, or SUV.
Trusted by thousands of satisfied customers and many local auto repair shops who refer their transmission work to us, we stand behind our work with competitive prices and a dedication to doing the job right the first time.

Why locals love us
We offer complimentary initial diagnostics to accurately assess your vehicle's transmission issues.
If you have a broken transmission, we can arrange towing directly to our shop for your convenience.
A 5 year/50,000 warranty is available on most parts and labor, ensuring peace of mind.
Our team consists of ASE certified technicians and members of ATRA and TRNI, guaranteeing expert service.
We are proud to be the first AAA (American Automobile Association) approved transmission shop in the U.S.
The upgrade, by the numbers
In the bay






What drivers say
★ 3.7 · 71 Google reviews
“HONEST SHOP. COMPETENT. My car had been misdiagnosed by another mechanic who said my axle was fine and that my transmission that was the issue. My Subaru also had a weird behavior so I was convinced my CVT was the issue and needed rebuild/replacement. North…”
“I just want to share that these folk are as honest and honorable as the day is long during the hottest part of summer. I explained to Kaitlyn (hope I spelled it correctly) what I thought was wrong and what my situation (living on social security) is. They…”
“North Seattle Transmission deserves nothing less than a 5 star review. They where fast friendly and definitely reliable. They got my truck back on the road running better than ever . Dennis took great care of me and I will definitely be back if I ever need to…”
Slipping gears, delayed shifting, rough or jerky gear changes, and unusual noises such as grinding or whining are red flags. You may also notice fluid leaks under your vehicle, typically reddish in color. In some cases, a warning light will illuminate. Addressing these warning signs early can help prevent more serious and costly damage.
Transmission problems can develop due to a variety of factors. Low or contaminated transmission fluid is one of the more common causes, as fluid is essential for lubrication, cooling, and hydraulic pressure. Damaged seals, faulty solenoids, and overheating can also lead to significant issues. In some cases, neglecting routine maintenance or continuing to drive with minor issues can cause internal
The repair process typically begins with a diagnostic evaluation. Technicians use specialized tools to scan for error codes and test transmission performance. Depending on the issue, repairs may involve replacing seals or gaskets, replacing solenoids, or performing a complete transmission rebuild. In severe cases, full transmission replacement may be recommended. After repairs are completed, the s
Preventive maintenance is key to extending the life of your automatic transmission. Regularly checking and changing transmission fluid according to your manufacturer’s recommendations helps maintain proper lubrication and cooling. Avoiding aggressive driving, never towing beyond capacity, and taking action when you notice early warning signs can also reduce wear and tear. Scheduling routine inspec
For expert automatic transmission repair in Shoreline, WA and the surrounding area, contact North Seattle Transmission at 206-364-3131. Feel free to give us a call to schedule an appointment!
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