Best Transmission Fluid Change & Flush Services in Kennewick, WA

“Hawthorne Auto had installed a refurbished battery pack a couple of years ago and they told us it is still under warranty, so they are replacing it at no cost.”

“I had a problem with my rear differential and they did a great job communicating with me what was wrong, how much it was going to cost, and when my truck would be fixed.”

“Tim did a great job tuning my Corvette, very professional expert service, i'll will no doubt be returning and would recommend them to anyone who values expert service!”

“We managed to push our car into Sierra automotive and they took a look at it right then and there, identified the issue, found the part we needed, and told us they could do it the next morning before we had to catch the ferry back to Victoria at noon...”

“Hey there Dr Rob The Honest Car Doctor here and my team and I had a Jeep that was an all wheel drive and it had many noises coming from the drivetrain while driving down the road.”

“I cannot say more positive things about them and I hope their business continues to thrive because society needs more conscientious and generous businesses like this.”

“Clay's transmission treated my 82 year old mother like she was family and they didn't Rob her either they gave her an amazing amazing price on the incredible work that they did top-notch work for great price.”

“He showed me all the new parts he was using which were heavy duty towing steel parts with all new shift kit, dual clutch torque converter and all new heavy duty everything else!!”

“I loved the knowledge and the complete understanding of how someone would have mechanic shop trust issues and was very reassuring about the work they do.”

“Friendly staff”