Gillett Diesel Service

Gillett Diesel Service Family-owned diesel service, parts, and performance since 1986.

We are a true full-service shop committed to providing quality and honest work for our customers. We specialize in products/services for the Ford Powerstroke, GM Duramax, and Dodge Cummins, but we also offer products/services for commercial/heavy-duty vehicles, gas vehicles, motorhomes, and more.

We will be closed on Monday for Labor Day.Hope you’ll enjoy the three day weekend!
09/05/2026

We will be closed on Monday for Labor Day.

Hope you’ll enjoy the three day weekend!

If you’re running a Cummins, Duramax, or Powerstroke and you’ve been thinking about intercooler upgrades, the question i...
08/05/2026

If you’re running a Cummins, Duramax, or Powerstroke and you’ve been thinking about intercooler upgrades, the question isn’t “can it be done?”—it’s “will it hold up under real work?” We break down whether S&B intercooler pipes and boots are worth the money, with a mechanics-first look at fit, function, and reliability for towing, hauling, and daily-duty drivers. With decades of diesel experience behind every recommendation, we focus on proven solutions that protect uptime, not hype. If you want the straight answer on performance without compromising durability, this one’s for you.

https://www.gillettdiesel.com/blogs/news/s-b-intercooler-pipes-and-boots

07/31/2026

Rear Differential Service ⚙️

One of the most overlooked maintenance items.

How often?
We recommend every 30,000–60,000 miles under severe use (towing, hauling, or off-road driving) and every 60,000–100,000 miles under normal driving.

Why It Matters
Gear oil lubricates and cools your differential’s gears and bearings. Over time, it breaks down and becomes contaminated, leading to increased wear and potentially costly repairs. Routine service helps keep your differential protected and performing as intended.

Questions? We’re happy to help.

If you run a diesel pickup hard—towing, hauling, or building power—reliability isn’t a talking point, it’s uptime. Our C...
07/24/2026

If you run a diesel pickup hard—towing, hauling, or building power—reliability isn’t a talking point, it’s uptime. Our Cummins vs Powerstroke Reliability Compared breaks down what tends to show up in the real world: common failure points, what to watch by model/generation, and which choices hold up when the miles stack. Backed by shop experience and parts knowledge from people who’ve been in this business for decades, this is a straightforward comparison you can trust before you spend a dime. When you’re choosing your next platform or planning a repair, this kind of clarity matters.

https://www.gillettdiesel.com/blogs/news/cummins-vs-powerstroke-reliability

Diesel injector testing isn’t just “checking codes”—it shows you what’s really happening inside the pump-to-nozzle syste...
07/09/2026

Diesel injector testing isn’t just “checking codes”—it shows you what’s really happening inside the pump-to-nozzle system: spray quality, leak-down behavior, balance between cylinders, and how each injector is performing under load. In a shop setting, that data is what separates guessing from proven diagnosis, saving you from repeat failures and unnecessary parts swaps. When you run Cummins, Duramax, or Powerstroke platforms, the right test results can explain hard starts, rough idle, power loss, and uneven wear before downtime gets expensive. At Gillett Diesel Service, we bring decades of diesel expertise and honest, mechanically grounded guidance to every injector diagnosis.
https://gillettdiesel.com/blogs/news/diesel-injector-testing-what-it-tells-you

🇺🇸 Happy Fourth of July!We’ll be closed Friday, July 3rd, in observance of Independence Day.From everyone at Gillett Die...
07/02/2026

🇺🇸 Happy Fourth of July!

We’ll be closed Friday, July 3rd, in observance of Independence Day.

From everyone at Gillett Diesel Service, we wish you a safe and enjoyable Fourth of July weekend!

07/01/2026

CP3 vs CP4 isn’t a debate for the internet—it’s a decision that shows up in real-world uptime. In this breakdown, we walk through what matters most when choosing an injection pump, including design differences, failure tendencies, and how those details impact drivability and reliability. If you run Cummins, Duramax, or Powerstroke platforms hard, you already know: the right upgrade should make power without gambling with downtime. Talk to people who’ve been solving these problems for decades—this one’s built for serious diesel owners. https://gillettdiesel.com/blogs/news/cp3-vs-cp4-injection-pump

Diesel truck ownership isn’t cheap—and the real question is what maintenance costs you can expect before something force...
06/16/2026

Diesel truck ownership isn’t cheap—and the real question is what maintenance costs you can expect before something forces you into downtime. In our latest breakdown, we walk through the major wear items, engine-specific considerations, and the maintenance schedule patterns that matter most for Cummins, Duramax, and Powerstroke trucks. Backed by decades of diesel experience and the kind of honest, shop-floor guidance we’ve built our reputation on, this is a practical guide for keeping your truck reliable and your budget under control. If you want to protect uptime on a workhorse, you’ll want to know what’s coming.

https://www.gillettdiesel.com/blogs/news/diesel-truck-maintenance-cost

A diesel truck doesn’t forgive shortcuts—maintenance is what keeps your Cummins, Duramax, or Powerstroke pulling strong ...
06/15/2026

A diesel truck doesn’t forgive shortcuts—maintenance is what keeps your Cummins, Duramax, or Powerstroke pulling strong mile after mile. In this guide, we break down the fundamentals that matter most: fluids, filters, inspections, and the checks that prevent expensive downtime before it starts. Built on real shop experience and the kind of honest, proven solutions our team relies on every day, this is maintenance you can trust. If you run hard, you need a plan that runs harder. . Read complete at https://gillettdiesel.com/blogs/news/how-to-maintain-a-diesel-truck-right

The factory grid heater has become one of the most discussed reliability concerns on late-model 6.7L Cummins trucks.Flee...
06/08/2026

The factory grid heater has become one of the most discussed reliability concerns on late-model 6.7L Cummins trucks.

Fleece Performance’s new Intake & Grid Heater Kit replaces the factory grid heater assembly with a high-flow intake manifold and billet intake plate while eliminating the factory grid heater failure point.

A single part number fits all 07.5-24 RAM 6.7L Cummins applications, including pickup and cab & chassis trucks, while retaining the factory fuel line.

Our first shipment just hit the warehouse and they’re ready to go.

Questions? We’re happy to help.

Address

14812 Heritage Crest Way
Bluffdale, UT
84065

Opening Hours

Monday 7:30am - 5:30pm
Tuesday 7:30am - 5:30pm
Wednesday 7:30am - 5:30pm
Thursday 7:30am - 5:30pm
Friday 7:30am - 5:30pm

Telephone

+18015717780

Website

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