Diagnostics
Check engine lights, generic codes and the faults another shop has already given up on. We chase it until it is found, then we tell you exactly what we found.
Show Low, Arizona
A Quote Isn't
A Diagnosis.
A family came through here with a dealer quote for thousands in parts their truck did not need. We found the real fault and had them back on the road the same day. That is the whole job: work out what is actually wrong, tell you what it costs before we start, and hand it back right. 4.7 stars from 65 reviews.
- Trucks & pickups
- Motorhomes & RVs
- Fleet & fire apparatus
What's it doing?
Mon to Thu 8 to 5, Fri 8 to 4
(928) 537-3207
We diagnose before we sell parts
A generic code is where most shops start guessing and your bill starts climbing. We stay on it until we know what is actually wrong. That one habit decides what the whole job costs you.
You get the options
There is usually more than one way to fix a diesel and they do not cost the same. We tell you what each one gets you and what it runs, then you pick. Nothing is ordered before that.
Tell us if you're travelling
A fire crew blew a turbo out here on a job and the dealership would not look at it for ten days. We had it back in service in under three. If a trip or a job is riding on your truck, say so and it changes where you sit in the queue.
Priced before we start
You get the number before the work begins. If we open it up and find something else, you hear about it before we touch it. An invoice should never be the first time you see a figure.
- 4.7★
- Google rating
- 65
- Customer reviews
- 3 days
- Fire engine turbo, dealer said 10
- White Mtns
- Show Low and around it
Engines we live in
- Powerstroke
- Cummins
- Duramax
- Allison
- Cat
- Gas too
What rolls through the bay
Most shops pick one of these. We do all four.
Show Low sits where the highways cross the White Mountains, so no two days here look alike. A coach halfway through a summer trip. A work truck that has to earn tomorrow morning. A municipal rig. Somebody's daily driver. We are set up for all of it, which is why we are usually the only call you have to make.
Diesel pickupsPowerstroke, Cummins and Duramax. Exhaust, intake, turbo, transmission and the codes behind them.
Motorhomes & RVsDiesel pushers and coaches. Oil coolers, DPF work and the repairs that save a trip already booked.
Fleet & heavyWork trucks and commercial vehicles that cost money every day they sit in a yard.
Fire & municipalApparatus and service vehicles, handled with the urgency the job actually has.
What we do
Diesel repair, and the general work around it
Diagnosis first, always. Then the repair, with the options laid out before anything is ordered.
If it is outside what we do, we will tell you that instead of learning on your truck.
Call (928) 537-3207Engine work
Oil coolers, head gaskets, turbos and the internal work on Powerstroke, Cummins and Duramax platforms.
DEF, EGR & limp mode
Emissions faults, derates and the warnings that drop a truck into limp mode. We find the cause and repair it properly, and we walk you through the options first.
Transmission
Allison and other heavy automatics. Leaks, service and repair on trucks that tow for a living.
Exhaust & performance
Custom exhaust, intakes and top-of-the-line parts, fitted without cutting corners. People drive up from the Valley for this work rather than have it done down there.
Been quoted something scary?
Read us the quote over the phone. If it is fair we will tell you it is fair. If it is for parts you do not need, we will tell you that too.
(928) 537-3207The work
What the bay actually looks like
Our own shop on White Mountain Road, and our own work. Not one of these is a stock photo of somebody else's garage.
Book it in
About
A White Mountains shop, and the owner answers for it
We are on White Mountain Road in Show Low. Scott runs the shop. You may know us as Power House Diesel, which is the name on most of our sixty five reviews. Same building, same crew, same phone number. We answer every review that comes in, by name, the good ones and the hard ones both, because a shop that will not talk in public about its bad days is not telling you much about its good ones.
A diesel repair is a big bill and almost nobody can check the work themselves. All we can really offer is a shop that explains what it is doing, puts the number in front of you first, and stands behind the result. We remodelled the office last year so there is somewhere decent to sit while you wait for it.
Show Low & the White Mountains
Pinetop, Lakeside, Snowflake, Taylor and the highways between.
Mon to Thu 8 to 5, Fri 8 to 4
Passing through? Call ahead and we will fit you in where we can.
Diesel and general repair
Diesel is what we are built around. We take the everyday work too.
Body work available
Ask when you book. Plenty of people have it done alongside a service.
“A dealership was wanting thousands for unnecessary parts... Now it took only a few and he got our truck going again. The day we brought it in.”
How it goes
Call, book it in, hear the options
Nothing is ordered and nothing is started until you have the number and you have said yes to it.
Five steps, and you will know where your vehicle is at every one of them.
Call (928) 537-3207- 1
Call the shop
(928) 537-3207. Tell us the vehicle, the engine and what it is doing.
- 2
Say if you're travelling
If a trip or a job depends on this truck, tell us. It changes where you sit in the queue.
- 3
We diagnose it
Properly, before anyone talks about parts. This is the step that saves you money.
- 4
You get the options
What it needs, what it costs, and where there is more than one way to go about it.
- 5
You get it back
Done when we said. If anything changes, you hear it from us, not at pickup.
Reviews
Sixty five of them, most under our old name
Every word below was written by a customer on Google. Nothing changed apart from trimming for length.
The good and the bad are all still on the listing, with our replies underneath.
4.7
Average across 65 Google reviews
What customers mention
- Knowledgeable staff 11
- Fair pricing 5
- F350 work 5
- Diagnostics 3
- Diesel issues 3
- Fixing the issue 3
“We were in AZ/NM for work and we blew a turbo. They understood our need to get our fire engine back up and running and exceeded our expectations. They got us fixed up and back on the road in less than 3 days when the local dealership said they wouldn't even look at it for another 10 days.”
“He saved my family of nine. We came from out of state, truck went down, and a dealership was wanting thousands for unnecessary parts... Then we found PHD. It took only a few and he got our truck going again, the day we brought it in. It is hard to find good and honest people.”
“Scott took my diesel pusher motorhome in for a last minute repair, to change the oil cooler. The team working on the coach was super nice and did a great job. Thanks for fitting me in on short notice, allowing me to keep my travel plans.”
“My truck kept throwing a generic MAF code. They went way above and beyond to diagnose and fix the issue when no one else could. Fair price. Very friendly. Highly recommend.”
“He and his team diagnosed my DEF issue and proposed a couple of solutions to fix my limp mode problem. Couldn't be happier with the results. Quality parts and quality work!”
“I drove all the way from North Peoria to Show Low to have work done on my 6.7 Cummins Turbo Diesel, and it was well worth the trip. No corners were cut, and only top of the line parts and workmanship were used. My truck runs better than ever.”
Do you work on motorhomes and RVs?
Yes, including diesel pushers and coaches. Oil coolers, DPF and exhaust work, and the diagnostics behind a warning light. If you are mid trip, say so when you call and we will do what we can to keep your plans intact.
I'm just passing through and I'm stuck. Can you help?
Tell us on the phone. Show Low sits on the routes through the mountains and we get these calls constantly, so being away from home moves you up the list wherever we can manage it. If we cannot get you out in time, we will say so rather than let you sit here hoping.
Another shop quoted me a huge number. Is it worth a second opinion?
Almost always. We have had people turn up with dealer quotes for thousands in parts that were not needed at all. Read us the quote over the phone and you will get a straight answer, including when the quote turns out to be a fair one.
Which engines do you work on?
Powerstroke, Cummins and Duramax are the everyday ones, plus Allison transmissions and heavier diesel platforms. General and gas work too.
Can you fix a DEF fault or a derate?
Yes. Emissions faults and limp mode come through here constantly. We find the actual cause and lay out the options for a proper repair before anything gets ordered.
How long will you have my vehicle?
It depends on the fault and on parts. You will get a real answer rather than an optimistic one, and if that changes while your vehicle is here, you hear it from us rather than find out at pickup.
Do you do body work?
Ask when you book. Customers do schedule body work alongside their service.
Weren't you called Power House Diesel?
Yes. Same shop, same building on White Mountain Road, same crew and the same phone number. Most of our reviews were left under the old name, and they are all still there on the listing.
Where are you and when are you open?
3791 S White Mountain Rd, Show Low, AZ 85901. Monday to Thursday 8 to 5, Friday 8 to 4. Closed Saturday and Sunday.
Contact
Book it in
Call the shop if it is urgent or you are travelling. The form is fine for scheduling, quotes and second opinions.
- Phone
- (928) 537-3207
- Hours
- Monday to Thursday, 8:00am to 5:00pm
Friday, 8:00am to 4:00pm
Closed Saturday and Sunday - Shop
- 3791 S White Mountain Rd
Show Low, AZ 85901
Get directions - We cover
- Show Low, Pinetop-Lakeside, Snowflake, Taylor and the White Mountains
- We work on
- Diesel pickups, motorhomes and RVs, fleet, heavy trucks and fire apparatus
Send us the details
Tell us the vehicle and what it is doing, and we will call you straight back.