Here's a bit of info about Dooley. He graduated from Universal Technical Institute in Phoenix, AZ with a degree in Automotive Technology. He joined the U.S. Army as a 63H All wheeled and track vehicle mechanic and served in OIF1 "Operation Iraq Freedom 1". He's worked at both independent shops and dealerships as well as being the a technician and maintenance manager/mechanic.
He went back to Iraq as a civilian technician. He is an ASE Master Automobile Technician, has EPA 609 certification. Has 15 yrs experience and started Dooley's Diabolical Diesel in 2013. We are on a family road trip from Minnesota to Glacier and beyond and our GMC Duramax kept blowing through fuel filters.
He went back to Iraq as a civilian technician. He is an ASE Master Automobile Technician, has EPA 609 certification. Has 15 yrs experience and started Dooley's Diabolical Diesel in 2013. We are on a family road trip from Minnesota to Glacier and beyond and our GMC Duramax kept blowing through fuel filters.
Services
Vehicles that range from stock form to your serious performance enthusiast can benefit from digitally tweaking and tuning one of the most important parts in the vehicle, its computer. Don't let a stock computer slow you down. Let Dooley's Diabolical Diesel Tune it with HP TUNERS VCM Suite! Our mission is to provide the most complete, cost effective tuning and data acquisition solutions for car and truck enthusiasts and professional fleets.
Dooley's Diabolical Diesel offers a full line of aftermarket truck accessories to give your ride the edge you're looking for:. When you're simply not satisfied with your truck's stock lights or you want to get ready to conquer the night in all conditions & terrain, performance headlights and off road lights are the natural solution.
The Premium Select line has evolved from a single product formulated to overcome the fuel deficiencies common during World War II. We at Dooley's Diabolical Diesel are committed to offering you, our customer, the highest professional automotive service and repairs available in the industry. We strive to provide you with quality service in a timely manner and at a competitive price.
Dooley's Diabolical Diesel in Great Falls, we know that there is nothing more uncomfortable than a vehicle that can't keep you cool in the sweltering summer here in Montana. We can diagnose and repair your air conditioning system problems. From a basic thermostat to electronic climate control testing we can repair your AC system.
From the brake pedal to the hydraulic brake fluid, brake master cylinder to power brake booster, drum brakes to disc brakes and electronic anti-lock brake sensors, Dooley's Diesel techs know every part of your brake system inside and out and can perform brake repair on any make and model. Your vehicle's brake system has one job - to stop your vehicle.
Reviews (10)
Doug Caldwell
Oct 06, 2021
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Lostgypsy Lost
Sep 26, 2021
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Big T.
Apr 24, 2021
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Ryan Huston
Jan 26, 2021
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Casey and Christian took great care of me. I had Casey do some work on my diesel Ram 2500 and Challenger 6.4 and he exceeded expectations on both. He performed exactly as promised, communicated efficiently, and has a great rate. I recommend him for your diesel or gasser needs. Also recommend talking to them before purchasing items for install, they will take care of you in ordering anything you need for probably a better rate than you can purchase yourself.
Timmy K.
Jan 02, 2021
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Im big into supporting small businesses in my town... But my experience with Casey when he put a mildly Bulit 68rfe trasmission in my Dodge was terrible....This truck has a second gen kit with stock fueling! Had it for less then two years and 13,400 miles and my 5th and 6th gear are slipping. Tried calling (Casey the owner of the shop) wouldn't even return my phone calls. This trasmission had a 3 year 36,000 mile warranty and he is making excuses up why it's my fault saying my MAF sensor was pointed in the wrong direction when I bought a new cold air intake. Fixed the problem over a year ago and
Teresa Reihl
Nov 10, 2020
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Leagl
Jun 20, 2020
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If I could give this business a zero I would..Called and made appointment weeks prior and explain everything I wanted for my 6.4L. Date gets here, take off work and drop off truck to have work completed over next couple days...Hitch ride to work on pipeline and on foot all day cause no rental cars were available...Then get call early that morning stating the owner/ mechanic says that “he doesn’t want to do the work now cause he feels the 6.4 is too hard to work on...I mean really? You’re “Diabolical Diesel”????? Total ruined my day, my time, and my opinion of this place of business..
Jad Davidson
Oct 18, 2019
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I was traveling from Colorado to Canada when we began having issues with the fuel system in my F250. They did a great job fixing my problem very quickly and also found another issue that could have been catastrophic. My ABS light kept coming on and it was diagnosed as a faulty hub. The hub was replaced and my fuel issue was resolved but he also pointed out that my oil dipstick had a crack in it. He stated that it should not be an issue. During our trip I guess that small crack got bigger as we were driving and when we got to Banff, Canada, the engine was making a horrible knocking sound. Turns
Neil Norris
Jun 26, 2019
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On a road trip from Arizona to Canada my 2007 Dodge Cumins lost an injector. Chris quickly diagnosed the problem. He then made the extra effort to get my Dodge repaired in one day, at about one third the cost of the dealership.
His office staff is amazing also.
If you want your diesel repaired right, and confidence in the job, Dooley’s Diabolical is the place to go! I would drive from Arizona to Great Falls just to have Chris work on my Dodge
His office staff is amazing also.
If you want your diesel repaired right, and confidence in the job, Dooley’s Diabolical is the place to go! I would drive from Arizona to Great Falls just to have Chris work on my Dodge
Michael Lake
Dec 11, 2015
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Dooley's is pretty amazing. Super cool dudes and they definitely know a thing or two about engine repair. Casey fixed my Dodge 1500 (non diesel) a couple of time and has been great about truck advice and maintenance. I'll be bringing my truck to Dooley's from here on out. Found myself a trustworthy, reliable mechanic. Not an easy thing to find.