Riverside Transmission Center 12321 Sampson Avenue, Riverside, CA 92503

"Super transparent, clean and friendly shop and owner. They educated me and were very fast. Even helped me diagnose other issues. I’ll be back to get my new transmission put in"

"I brought my car there for a diagnostic, not related to the transmission. A road test was performed, and they put it up on a lift. They noticed my driver side control arm was actually a passenger control arm. I think they wanted to charge $300 to change it for me. I told them no, I would change it myself, which I did $80. The guy made it sound as if the vehicle was in immediate danger and I shouldn't drive it out of the shop, in my head I was laughing at him because I purchased this vehicle used with 10k miles when I brought the car in it had 130k. The annoying part about the experience, I paid $110 for a diagnostic which still did not solve my original issue. It turned out it was the passenger side wheel bearing and hub that needed replacing. I can't believe they couldn't figure it out from a road test, and putting it up on the lift. Come on man spin the tire!!!"

"Absolutely appalling experience here. I recently finished a 2 year build on a 1972 gmc k5 jimmy with an lsx454 . The shop who built my truck said they were going to get me a "built" 4l80e which my holley management system and motor call for and it would come from riverside transmission center. They used hp tuners to give me a basic drivability centered tune and recommended i go straight to a tuner to have it dialed in and dyno etc. so i did. The tuner did everything and all seemed fine until the end when they test drive it. He couldn't get it to start in first, only second. They took a closer look and realized i had a 4l80 not a 4l80e. They recommended i put the right one in. I left and on the way home my truck blew out 2 pistons and the transmission as well . Done. Later found out it was because of being overworked since the trans was wrong. I called holley to confirm and they told me the first gen 4l80 doesn't match up with my setup and wouldn't work at all. Super frustrating especially since the builder told Rich exactly what motor etc it was for. I called rich and he said they're "all the same" which is the first straight up lie. After having to get at least 5 people including holley to tell me it needs the later generation 4l80e, Rich finally got me sorted out with one. Or so i thought. It was the "e" and my truck did go into first so i thought he we must be good now. Oh by the way, rich refused to pay for the first replacement. The owner of the shop who built my truck had to pay for it which I appreciated very much that at least he made things right. I still had to pay 8k to rebuild my motor which was caused by the WRONG trans BUT i was happy someone helped. Back to the replacement... new tune once that was in so there goes another 800 on top of the first 800. Rich said we are good up to 800 hp on the new "built" proper 4l80e. From day 1 it slipped a tiny bit sobi babied the truck for 250 miles. Second trans blew grenaded while cruising at 65 mph barely touching the gas pedal. First rich said he needed to see it then told the shop once they pulled it that it wasnt his fault and he wouldn't comp or even discount a new or rebuilt one. So 4k for that one, 4k for the first one, 8k for the motor rebuild that was a brand new 22k lsx454 and now i have to go buy one or rebuild this POS they sold us. I wouldnt trust these con artists with a bone stock newer model car, they clearly lied about both units being built and don't even know theres a difference between certain models and generations of a 4l80. Absolute nightmare, their series of mistakes cost me and the shop close to 20k in unnecessary added coats and they refuse to make it right. Never, ever use this shop if you want a reliable vehicle!!"

"Rich is great. They rebuilt my AOD trans bench build out of my 67 bronco. They opened it up quoted me the price. Took him.maybe 3 days. Picked it up reinstalld myself and took it back a couple weeks later for his guys to give my brono the final adjustment and all is well. Great guys here. 5 stars."