I recently took my truck to Qualifast Transmission and Auto Repair and had them service my…read moredifferential fluid, transmission fluid, and PTU fluid -- and I couldn't be happier with the experience. Right after the service, I drove over 10 hours straight to Salt Lake City, and my truck ran absolutely amazing the entire trip. Everything felt smoother, more responsive, and just solid overall -- exactly what you want after getting major fluids serviced. On top of that, the customer service was great. The staff was professional, straightforward, and didn't try to upsell anything unnecessary. They explained everything clearly and got the job done efficiently. And honestly, the prices were even better than expected -- especially for the quality of work they delivered.

Gigi was up front honest, knowledgeable and helpful, always answering my calls and updating me with…read morestatus of my truck, he charged me 1/2 the price GMC was charging, took a couple days to replace transmission after he received it.

I highly recommend El Monte Transmission! I brought my Camaro here after dealing with transmission…read moreissues and getting different opinions about what needed to be repaired. From the beginning, John, the owner, and his son Jonathan were honest, knowledgeable, and straightforward with me. What I appreciated most was that they took the time to properly look into the problem instead of immediately telling me I needed the most expensive repair. They explained everything in a way that was easy to understand, kept me informed throughout the process, and got my Camaro repaired and back on the road. John and Jonathan genuinely seem to care about their customers and doing the job right. After all the stress I had been dealing with trying to get my car fixed, it was a huge relief finding a transmission shop I could trust. Great customer service, honest people, and quality work. I'll definitely be coming back to El Monte Transmission for any future transmission needs. Thank you John, Jonathan, and the whole team! Highly recommend!

I brought my car in for a diagnostic because it was slipping and jerking while driving. John took a…read morelook at it and called me about an hour later. He explained that the transmission was having trouble shifting into third gear and would eventually need to be rebuilt. He also provided an estimate for the repair. Since the car is older, I decided not to invest additional money in rebuilding the transmission. Even though I chose not to proceed with the service, John still took the time to explain my options and recommend what I should do next. He went above and beyond, especially considering that the diagnostic was free. I truly appreciate John's honesty, helpful recommendations, and excellent customer service. I highly recommend him.

Can't say enough good things about the team here. They charged me LESS than I had agreed to for a…read morefull diagnosis, and then offered some advice as to why I should NOT give them the work! Can't find that level of honesty in many mechanics these days. But it pays, particularly saying that to others who responded to my Yelp project for the work I needed; I will never go back to anyone but them for all my transmission needs in the future.

Where to begin with the amount of kudos and appreciation for HD Auto Transmission. From the time…read morewhen I called in for a quote for transmission rebuild and spoke with Emily, she was very thorough, polite, very helpful, and provided exceptional customer service! Ethan, the Man, the Myth, the Legend! If you want quality, honest and trustworthy work done for you, come see Ethan! He is extremely passionate and knowledgeable about his craft, he will explain in layman's terms how things work and you can see the level of pride he takes in his work! I am elated to have found such a great Team that I can rely on to keep my toys and family vehicles safely on the road! Much appreciation to you all!

Gabriel was very professional. He told me exactly what was wrong with the car and gave me a more…read morethan fair quote to fix it. The service was quick and convenient so truly a hidden gem.

From the owner: Former dealership mechanic with 7 years relevant experience. Realistic pricing to get your vehicle…read moreback on the road and the added convenience of it being repair at your home. Also, ask for a comprehensive inspection of the vehicle to ensure you stay on the road without issues!

Very impressed with both the work and the integrity of this shop. I brought them a Subaru with an…read moreintermittent transmission fault that had triggered several warning lights. They spent 2 1/2 days trying to duplicate and isolate the problem, thoroughly checked the external wiring harness, and tested the suspected speed sensor. Everything checked out and the transmission continued to operate normally. Rather than guess or start replacing parts at my expense, they installed a used but known-good speed sensor they had available and told me to drive it and come back if the problem returns. At that point they can continue troubleshooting with at least two possible causes eliminated. Sometimes the best repair shop is the one willing to say, "We can't reproduce the problem, the transmission is functioning normally, and we don't want to charge you for work we can't justify." Five stars earned.

I am writing this review to warn future customers about my unacceptable experience with Affordable…read moreTransmission and Auto Repair Center regarding an ATRA nationwide warranty repair. Background and Initial Service: My vehicle's transmission was rebuilt a few months ago by a different authorized ATRA shop. Due to a recent move, the original shop authorized me to bring the car to this affiliate location, a 30-mile drive from my new home, for a warranty diagnosis. Upon drop-off on 11/18/2025, the front desk employee immediately became cold and dismissive when I mentioned the words "warranty repair." The Issue & The Refusal to Diagnose: The problem is specific and reproducible: when the car is cold, driving downhill causes the transmission to shift into what feels like neutral. Pressing the gas results in rising RPMs but no movement, forcing me to shut the engine off and restart it to re-engage the drive. After two days, I received a call informing me they could not reproduce the issue and were refusing to work on the car. I explained to Miguel that the condition requires a cold start and a specific downhill coast, asking them to try again or keep the car longer. He flatly refused any further testing, stating they were done with the vehicle. Integrity Violation and Fraudulent Documentation: Since they refused to honor the warranty, I requested a written reason for the denial of service, which is standard procedure. Miguel went to review my paperwork. When he returned, he presented a form and demanded I sign it before he would provide any written explanation. This form was an explicit waiver where I would acknowledge that the issue I claimed was not present and that their testing proved my claim was false. I refused to sign a document that was contrary to reality, as the transmission issue is demonstrably still present. The Threat and Escalation: Because I refused to sign the false waiver, Miguel refused to give me any written denial and escalated the situation. He told me he wouldn't help me anymore because I was "not a nice person." When I stated I would write an accurate review of this unprofessional experience, he raised his voice and began threatening me: Threats of litigation. Explicit threats of physical harm to myself and/or my property at my home. Threats to contact my employer to have me fired. I immediately took my keys and walked to my car, with Miguel following me out of the office, continuing to curse and issue threats. This behavior is far beyond poor customer service; it is menacing, unprofessional, and a direct failure to honor the ATRA warranty program. The shop refused to perform due diligence, attempted to force me to sign a false legal document, and threatened my physical safety. Avoid this business at all costs. Date of Visit: 11/18/2025+11/22/2025 Employee Name: Miguel (Front Desk)

When I tell you I have never met a more honest shop I mean it! It's so hard to meet honest people…read morein this industry but I could not of been more impressed! Angel is literally an angel... every step of the way he was on top of things, he explained everything that was going on, he reached out to us every step of the way and even spoke to me about my truck on his birthday when he was away with his family celebrating... THAT IS HARD TO FIND! He was beyond honest even when it made him no money. If you're looking for honesty, great communication, great pricing they are it! I know people question these kind of reviews cuz I know I do but my review is from a real person who was in a tough situation and was referred to this shop by a stranger... I trusted this stranger who referred me and when I called angel sold me right away just based on his professionalism and honesty! Thank you again angel, you made this process way less stressful then it could have been.

I was able to speak with Angel, I dropped off my truck in the morning and he had my truck fixed by…read morethe next day. I am very happy with the turn around pricing was reasonable with the work that was needed.

i Do almost all the work on my vehicle's and I put them thru serious punishment .... this isn't…read moresome bullshit review. HONEST ! EFFICIENT ! REASONABLY PRICED! INFORMATIVE! I could keep going..... i had a nationally recognized, highly reputable transmission shop who I won't name just yet "build" my transmission a few years prior and I paid double what A&S charged me..... these Guys blew that shop out of the water in every aspect.... exactly what parts were being installed as they did it and explained exactly where the other shop had failed to Live up to their end of the deal. if You're looking for straight up humans that care if you're smiling when you drive away ..... i wouldn't bother searching anymore

They fixed my transmission at a reasonable price. I recommend calling to make an appointment as…read morethey are really busy. They stand by their warranty I would came back again.

I recommend more people getting work done at this shop. Took a vehicle for repair and had it done…read morethe following day. The owner showed me the parts that he replaced with the ones I provided for him to do the job. That's quality service that doesn't normally happen with shops. I will continue to take my vehicle to Carlos. Much appreciated!

My car got fixed fast. Prices are good, and customer service is phenomenal. I would recommend.read more

Littlerock / A.V. The luckiest place to have car trouble ever! Three hundred miles into a trip to…read moreNew York my cousin's van started leaking oil at the rate of a quart per 150 miles. He made a huge mess of my driveway when he came to pick me up. We suspected the rear main seal was the culprit. A significant repair requiring a professional mechanic. Being a local A.V. resident, I am familiar with the Valco Transmission location off of the 138 in Littlerock and I suggested that my cousin take his van there. Immediately upon entering the office we were greated by smiling faces and a few hounds that were all remarkable in personality... humans and canines alike! :-) I explained the oil leak problem and within 20 minutes they confirmed our suspicion that it was a failed rear main seal. They gave us a great quote and we left it overnight. My cousin had very expensive equipment,including a $10,000 electric mountain bike called the "Stealth Bomber"in the van, so the fully gated and secure facility was very reassuring. No worries at all. With a full day of installing a new main seal, requiring the entire transmission to be removed as well as a failing motor mount and a much needed transmission filter with fluid flush, we were on our way. Not only was the price more than fair, they fully inspected the entire drive train for any potential problems and assured us that the 12 year / 145,000 mile old van was ready for a coast to coast round trip. Talk about piece of mind! The reason I know that we were indeed lucky to be near this family owned & operated company when we discovered such a serious problem is that, in the past, I have had mechanical failures in a one mechanic town and had to pay dubble for sub-standard work while waiting several days for chineese parts. Thank you again Valco!

My family and I were driving on Pearblossom Hwy when we started losing tire pressure quickly. We…read morequickly pulled over and changed to our spare(so we didn't ruin our rim) until we could find a shop. We pulled into Valco Transmission to be greeted by Jose and Eduardo. They quickly removed our tire, showed us the hole, and patched our tire, and even crawled under our truck and put our spare back in place. They were quick, friendly, efficient and fair priced! I recommend this business!

I recently purchased a used vehicle from out of state. Long story short, it was a disaster with a…read moreton of compounding problems. Advanced was able to sort through the issues. It ended up needing a new: - supercharger - turbo - manifold - engine mounts - all the gaskets along the way They were really thorough and took the time to make sure that everything they were already going to touch anyway was in good condition since the labor to get there was the biggest part. They handled everything! They even worked with me through the diagnoses part to make sure I wasn't spending unnecessary money. My small $300 warranty I bought ended up covering half of the cost which was a total bonus! Thanks Jonathan and Jose!

I've been coming here for 3 years since i Moved out here…read moreand before i had only gone too a dealership . Which always just felt like they were looking to see how they could hike up the price . I've been bringing my Honda and my Kia here both have always been taken care of and haven't had a single complaint . They are detailed on what is needed and why or what can be held off . In a time when it's hard to find value and feel like you're truly being taken care of at the fairest price it's nice to see places like this still exist .