This company was recommended to me a reputable mechanic who said he had sent 50 transmissions to this shop for work. They were able to rebuild my transmission for less than half the price of the dealership's quote for a new transmission, and the rebuild has a two year warranty. When an unforeseen problem came up on the day of pickup (which was no fault of their own), they helped with the additional repair and gave me a gatorade while I waited for them to finish the work well beyond their normal closing hours. They are very nice, honest people. I would highly recommend this company. read more

I tried and tried before I had to do this, but Denny's Transmission left me with no choice. I was referred by someone , who used Denny's in the past. Dropped my son's car off on March 19th. I was told that the shop was in the process of moving and wouldn't be able to start on the car until the following week. Completely understandable. After 2 weeks, I called for status. I was advised by his wife she would call me back, which she did. Another week goes by and I call and am told waiting on parts. Another week goes by and I call and am told either still waiting on parts or I'll call you back. At this point, I never receive any calls back. Spoke with the owner and was advised the car would be done by following week. Still nothing. Then was told the parts were delivered at the wrong shop. Now this was on April 16th. I expressed to the owner how we would be going out of town, etc. He assured me it would be ready by Wednesday April 18th. Still nothing. Went out of town and came back. Called on the 20th, no answer. Sent a text. No response. On Tuesday, April 21st, finally spoke to the owner who ensured me the car would be ready by today and as a courtesy, he will bring the car to me on Wednesday, April 21st. Well, that day came and gone. Tried calling to get an eta, no response. Sent text, no text. So today, still no car. This makes 5 weeks and to make it even worst, I saw they read my messages and never responded. Once I admitted to then I saw they were reading my messages, they must of figured out who to turn it off. I really didn't want to go this route. I really tried to work with them and give them the benefit of the doubt since we were referred to them. I tried being humble and not go to the shop, still nothing. So now, I'm left with no car, having to do a horrible review, and attach screen shots of the texts. Oh, to make things even worse, the person that referred me and was taking care of the bill, paid already since our work hours are different. I really tried to have patience, but this is unacceptable. I literally called AGAIN, finally answered and his response was, oh I didn't know it wasn't finished because I left the shop. Ok, so what's wrong with communication? Why would you leave the shop yesterday when you assured me YOU were dropping the car off. The last thing I want to do is hurt someone's business. Now I'm being told it will be dropped off no later than 730pm. My son's car was finally dropped off on April 25th around 8pm. Asked for the invoice, was advised it was emailed to my son's father and would email me a copy. Oh, also, he broke my son's driver's door handle and told me he ordered a new one. Here it is May 16th, still no invoice and no update on the door handle. Finally, I was scheduled to bring my son's car in on at 9am for a follow up to make sure there were no leaks and to get the door handle replaced. Well, unfortunately since he wanted us to drop the car off, I had to reschedule. We rescheduled for June 9th at 9am. Upon arriving, building doors were locked and no one is here. Calling, calling, calling and texting no answer. Finally, Shawn answers and I said what the fuck is going on. He said don't be cussing at me and hung up. Called back and no answer. I am beyond frustrated Finally called back and Shawn answered and I started talking in a normal voice trying to express my frustration no cursing and he told me he was done with me and he would deal with my husband only. So I gave the phone to my husband, which he told my husband that he would need to call his employee and see why no one is here. Well, he called back to tell my husband he couldn't get a hold of his employee and he would be here in 15 minutes. Finally, about 30 minutes later, he shows up. I remained in the car. My husband got out and spoke with him. He told my husband it will take 3 hours to check the car out and replace the door handle. My husband agreed and advised Shawn that he is taking his word. In addition, we asked about the invoice and his response was that my son's father has the invoice. He told my husband that it should be done by 3pm and he will follow up with him. In the meantime, I texted my son's father and confirm he never receive an invoice via email. So 3pm comes and my husband calls and speaks with Eva. Eva stated that the car is still being worked on and she would follow back with him. 5pm comes and my husband gets a call that the vehicle is ready. We go and pick up the vehicle. In addition, my husband asks for an invoice as well, which we finally got. While leaving, my son's father texts to say he finally received an invoice. Never ever again. If you choose to use Denny's Transmission, I hope your experience is way better than ours. read more

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This guy (Shawn) is a scammer. I ordered a rebuilt transmission from him and very explicicitly requested a 4L65e core. I trusted him to provide what I ordered but some months later I had transmission problems - leaks and shifting. I realized he provided a 4L60e transmission. I took it back to him about three times and he is never in the shop. I called numerous times and never got a return call. This guy is a scammer. read more

Took my truck to them after being referred by Arizona Engine Rebuilding. Shawn gave me an estimate and they stuck to it. The Covid-19 issue delayed the repair, but Leslie kept me informed of the progress. It was a great experience and a pleasure to deal with the staff. I highly recommend them and I will be bringing my other truck to them to service that transmission as well. Great job guys, she runs like a champ. read more

By far the best transmission place I've ever been to. Cadillac told me that my rear main seal was bad and wanted $3k dollars to repair it. I brought it here to be looked at for a 2nd opinion. They found that oil was leaking from my valve cover and running down the transmission and that the seal wasn't bad. They took the entire transmission out and inspected it and didnt charge me a penny. Ive never met a more honest auto repair center and would recommend you bring your car here for any transmission issues, you'd be really dumb not to. Thank you guys, Alex read more

Don't waste your time or money here! I own a hot rod shop in Phoenix and we took a car to Dennys for a transmission service. What we got was less than a quality job and to boot a total lack of responsibility from the owner Shawn to fix the problem. They used lots and lots of black silicone goop in lieu of a gasket at the pan and of course this failed with the fluid running out of the transmission. You can see in the pics what a terrible job they did; just look at all the goop! They refused to fix it when we took it back saying that the work they did did not cause the problem; really! Go elsewhere for your transmission needs, these kind of shops hurt the industry producing lousy work and then not owning up to if a customer has a problem. read more

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I had my transmission serviced by Denny's transmission thinking I had a seal leak which later turned out to be from the power steering system. I worked with Shawn and he told me this and advised that our transmission was fine. Shawn did check transmission operation with diagnostics and made some adjustments to ensure transmission performance. From my experience working with Shawn, this shop is honest, customer service driven, and their service is comprehensive and affordable. For my power steering leak, Shawn recommended another shop which I will pursue. read more

Transmission went out on my 2012 2500HD. Dealership said 5100.00 plus. I took it it Denny's dealt with Shawn, he told me 3-4 days and 3500 for upgraded transmission. Completely satisfied. Got it done in time he said and runs better now than before. Makes me wonder how long the original trans was going out. Highly recommend this shop read more

I took my truck in for repair and they were friendly and honestly. The best part is they gave me the best deal I could find, I did a lot of research around for several quotes. I highly recommend them. I will be going back for any repairs i need. read more

Don't take you car to Denny's transmission!!!!! What a bunch of crooked people !! After I had my car main seal replaced at Denny's Trans, my car didn't shift very well so my friend look at my transmission fluid and it was black. Before I took my car in my transmission fluid was red not black. Apparently they put in used oil in my transmission. they want me to come back to them to get my transmission rebuild. I paid close to a over $850 to for to had my main seal replaced but to them it's not enough. read more

Have a '93 dodge 3/4 ton truck needing a transmission. Denny's rebuilt the transmission for it.. It out went out after 6000 miles. They didn't tighten bolts down & it wipe out the fuel tank. I had it towed back to cavecreek. They had it for about a month the second time. Finally, I got it back and the transmission went out a 3rd time with only 2000 miles on it. How many times does it take to get tranny done, RIGHT! There will not be a third time for me.. Do yourself a favor and don't use Denny's Transmission! read more