Diagnosed and repaired engine problems with my rare 67 Camaro. Turned out to be bent rods and broken rocker arms. Things were a mess. With my OK Greg & Team replaced the cam, lifters, rods, 1 valve and replaced 2 ailing rocker arms. I worked in sourcing some replacement parts (and Greg did too) and he pulled a miracle and got a 3-angle valve job done in no time. Greg's work was SOLID. The car has never run as good as it has after Greg's attention. Rate charged per hour was VERY fair, and I am happy to have found new friends to help take care of my classic car. HIGHLY recommended. You can trust Greg's Transmission. read more

We needed a new transmission. They were wonderful. They worked with our warranty company. They completed the job quickly. We were visiting from out of town and they told us about a mechanic they recommend in Billings since before this we had a negative experience with a local shop. They even told us that shops name when we could not remember months down the line. Will was great to work with. We highly recommend this shop! read more

I'm new to Montana and the Missoula area. After making the drive from Texas to Montana, my transmission went out on my '15 Yukon. I called around to multiple shops and Greg's had the best price and warranty for the transmission. The part arrived in 2 days and they had my car completed just 2 days later. I would highly recommend this shop. Everyone was so nice and they did a great job. read more

My rating is "0" stars. They were recommended to me for an issue believed to be in my transmission. Took it in, $200.00 later, no diagnosis and was told the front drivers hub assembly needed to be replaced before they could diagnose. I honestly believe it was because I am a woman that they decided to bend me over completely. Will never recommend this place and will tell everyone I can about how they, put simply, took advantage of me. Terrible service. Total scammers!! read more

Charged me 200 dollars to replace a tail light fuse 2 months later my taillight stopped working again and they wanted to charge me full price to look at it again. Not quality work just looking to make a quick buck off you stay far away take your business and money elsewhere. read more

Greg's Transmission is incredible. While he was backed up and wasn't able to work on my car, he was incredibly helpful, honest, and kind. I was on a cross-country road trip, stranded and in desperate need of help and he made sure I was informed and made a few calls to help me find another auto body shop. I would recommend him and his shop to anyone in Missoula!! Thank you so much Greg read more

Excellent and friendly service! They found a part for older vehicle and installed it very quickly...a joy to work with; I can highly recommend! read more

They got me in super fast, they were all super nice, and they were the only business to get my joke in my original post But that's not all, the good luck continued once i arrived. It goes without saying that the problem is no more; he called the morning of, which was so helpful, and everything was done within 2 hours tops (even with delay on parts!) Bill is the one who helped me and he was great. He explained everything, and was up front about pricing from the beginning (i paid less than i thought i would). Id totally recommend them to a close friend and i will continue to go there once i need that window button fixed;)!! read more

Amazing customer service. Honest. Very fairly priced. They went out of their way to find a hard to find part that I needed to fix a transfer case for my Infiniti. They contacted dealers everywhere and ended up going through Nissan, found out that is was actually cheaper, and got it there faster than if they had gone through Infiniti. On top of all of that, my passenger side window was jammed and was down by a half inch. They fixed that for free. SERIOUSLY FOR FREE. These guys are THE BEST. read more

They looked at my transmissiin. Told me it would be 1600 to fix. I said no and they put the top back on and charged me 200 to look. I took it to my regular mechanic and he said it was a cheap simple fix but they had left parts out so it wouldnt work. Don't trust them read more

A little over a year ago my newly purchased, less than 5 year old vehicle was diagnosed with early transmission failure and I quickly spent thousands at Greg's to fix the problem. They broke into the transmission, made multiple repairs and replacements, including clutch and seal. I was made to believe the transmission system was now as good as new. I was very relieved and thankful to have my car back and running for my planned drive to Oregon just a few months later. On the tail-end of this trip to Oregon, the front of the vehicle once again began making the familiar grinding noise. I took the car to a reputable auto shop in the area and transmission failure was once again diagnosed. I was advised to not operate the vehicle and that the entire transmission was in need of replacement and that it would take weeks and thousands to order parts alone on top of labor and the large sum I had just spent at Greg's. As a first time car buyer out of college who had just spent the entirety of my savings on the initial "repair", the only choice was to take a major loss and sell the car for less than what I had paid this shop. Safe to say, a VERY frustrating and disappointing experience... read more

On a trip from Washington to southeast Idaho, the radiator on our van failed. We pulled off i-90 into Missoula and looked up the closest auto repair shop. Gregg's was the first one we found that was open. They took a look at it immediately and got on the phone to see if they could locate a new radiator. An hour and a half later, we were back on the road. These guys are AMAZING! I had visions of hotel stays and rental cars, but they got it done. I would highly recommend Greg's Trans-Electric! read more

Charged me 50 bucks to give me a rediculous quote. Do not recommend. Was not made aware of any fees invovled looking at the car.

These guys are freakin' awesome! Nowadays, it can be hard to find a good honest mechanic, but Greg, Bill and the rest of the crew are the real deal. I figured when my 4wd quit working it was going to cost a lot of cabbage to get it fixed, but thanks to these guys and their ingenuity, it was a lot less than I thought. I can't recommend these guys highly enough. Don't take your car anywhere else! read more

I am so glad I brought my 71 Chevy K10 into Greg's. These guys are truly professional mechanics. My truck is an old ranch plow truck that sat in storage for many years before I acquired it. It was hard to start, had a stumble on acceleration, engine ran rough, the parking Pawl was damaged and there was no Park, and the kick down was not functioning. Greg's had the truck for two days. When I picked up the truck it ran PERFECT! They did a full tune up replacing distributor cap, points, spark plug wires, spark plugs and fine tuned the carb. They set up the kick down cable and bracket, repaired the parking rod, replaced bad U-joints, and basically went through the whole truck and repaired anything mechanical that was not functioning right. I really appreciated that they repaired everything on the spot without calling to ask permission. They just did what needed to be done. Best mechanics and automotive shop around! I will never use anyone else. These guys are HONEST and detailed in their explanation for every aspect of the job. Plus they build some great Classic Hot Rods!!!! Reliable, Fair, Honest, and great customer service!!!! read more

Greg did a terrific job on my motor home when second gear band went out. Job was done on time and right on the estimate. He invited me in to see all the parts when it was all torn down. Don't be put off by the clunkers in the parking area--it's a hobby. read more

It is hard to find good, honest, helpful people these days. A distress call from my daughter furthering her education in Missoula - her car won't start. I do anything a mother 600+ miles from their child would do - look up a number for her to call. Greg, you were a blessing to some parents who couldn't be there to help their baby. You are what we call "good people". Thank you. read more

Traveling across the States, my truck needed repaired to continue on. I called Greg last minute and he got me in right away and even stayed after hours to ensure my truck was ready. Very knowledgable shop and the owner Greg is very hands on with his crew. I would highly recommend this shop for their excellent service and expertise! read more

They went out of their way to squeeze me into their busy schedule when I was in a bind. They were courteous and friendly and I felt the price for labor was fair. read more

I have an interesting review to give here. First, for the general idea, Greg - the owner - is a straightforward, honest guy. He will quote work, if the work gets nastier he will tell you that before escalating the amount of labour or parts into things. He's honest about what can and can't be done and he makes a sincere attempt to fix problems that come up after work is completed. So, I brought a little car in to get an engine swap done years ago. It did not go well - at one point me and Greg were literally yelling at each other from across the counter. This the result of price misunderstandings, stress, parts confusion and all sorts of unfortunate circumstances including a sudden financial disaster that inserted a relatively long delay in pickup, which he generously accommodated. After the fact it seems to me ridiculous and actually very funny considering the situation and the content of the exchange. I should point out it was mostly my problem anyway and I seriously doubt it would have come to that point without the peculiar and one in a million interaction of both our personalities. After this, despite the obvious hatred and fury we had for one another, Greg was very faithful to his work and 100% willing to sort everything out. Eventually things were resolved at great cost to both of us; it was a fiasco, but we parted on amicable terms. What's even greater is that I usually will think of his shop first when I have an issue with my car. Of course, I would never bring it there again because I think there would be a chance of a conflagration or some other unforeseen flare up of anger. Also its wise to leave well enough alone in my opinion. Anyway, good, trustworthy place that does great work [nevermind my unlucky engine issues] and stands by it... through thick and thin I guess. Also, if you have a Metro I very highly recommend him. One of his mechanics is very knowledgeable about these cars due to personal interest and expertise in taking care of them., read more

The mechanic at the local Peterbilt recommended Gregg's Trans. Since we were on vacation from California, we made arrangements to take our Jeep for repair--our wheel axel was leaking. They were professional, had the parts in stock, were dedicated to doing an A+ service. The two mechanics took time to explain what was required to complete the service. We're very pleased with their wotk and communication read more

If you like your car and want to keep your hard earned money DO NOT GO TO GREGS!!! if I could give them negative stars I would. First, they quoted us a for sure price over the phone, then when we pick our car up they tell us they miss understood and thought that our v8 was only a v6...well you can run the vin number on any vehicle and it tells you if it is a v8 or v6 or smaller. They then charged us $100 more for labor, and called my husband a liar. It has been only 1 month and the part they replaced is broken and has caused further damage to my vehicle! I am furious. If I could afford it I would sue. The customer service is appalling, they put the wrong parts in, and they lie, enough said. read more

Greg's auto is not a good choice for your automotive needs! Beware of this shop they are extremely unprofessional! They do not care about their customers nor do they aim to please! Zero integrity! A year ago I had over $700 done in routine maintenance work. I had to take back the vehicle because I was not satisfied with the work that was done (specifically the alignment). Somehow we got into a heated exchange over what was done and he said he didn't want to deal with my wife and said we were hard to please. Now the boots on the ball joints have already split. When I went up there to talk with him and he said he remembered me and held grudges with people so told me that my warranty was out without even looking up the info in the computer. Just before he got into the shop I spoke with his employee who said the ball joints should have lifetime warranty. The next day I took my car to Les Schwab where they told be that the ball joints were cheap parts. There's just something about this guy where we can't trust him. I had a bad feeling about the shop the first time I went by and should've went with my gut goes to show you a year later I was right! read more