Duramax Diesel Repairin South Jordan, UT
Your Duramax-powered truck was built to work — whether it’s hauling heavy loads, towing up the canyon, or just getting you through the day without missing a beat. At Performance Place, we’ve been helping diesel owners in South Jordan keep their trucks strong, reliable, and road-ready since 1974.
As a family-run shop with deep roots in the community, we’ve built our reputation on honesty, attention to detail, and long-term relationships. We service every generation of Duramax diesel engines, from the early LB7 to the latest L5P, using OE-level diagnostics and real-world experience to get the job done right — with no upsells or guesswork.
Waiting Area with WiFi
Early-Bird Drop-Off
After-Hours Pick-up Lockbox
Free Ride Share Available
Duramax Diesel Engines We Service
LB7 Duramax (2001–2004)
Known for: Strong mechanical reliability but prone to injector failure
The original Duramax engine set the stage for GM’s diesel success. While the LB7 lacks an EGR or DPF system, it’s notorious for injector issues — especially leaking or cracking. We provide precision injector diagnostics, replacements, and fuel system cleaning to keep your LB7 running smoothly.
LLY Duramax (2004.5–2006)
Known for: Improved power and towing, but known for overheating
The LLY introduced an updated turbo and EGR system but brought common issues like turbo vane sticking and cooling system struggles under heavy loads. We diagnose VGT actuator problems, inspect cooling components, and resolve EGR concerns to restore performance and prevent downtime.
LBZ Duramax (2006–2007)
Known for: Exceptional reliability and performance — a fan favorite
The LBZ is a popular platform thanks to its power and pre-DPF simplicity. While generally solid, injector wear, glow plug faults, and transmission stress from heavy towing are common over time. We handle everything from fuel testing to preventative maintenance for long-term reliability.
LMM Duramax (2007.5–2010)
Known for: Introduction of DPF emissions equipment
The LMM carried over many of the LBZ’s strengths but added a DPF system, which can lead to clogging, frequent regens, and sensor failures. We provide full DPF service, emissions diagnostics, and turbo system repair to keep your truck out of limp mode.
LML Duramax (2011–2016)
L5P Duramax (2017–Present)
Known for: Highest power output and most advanced electronics
The L5P is a modern workhorse with impressive towing capacity and redesigned internals. It features updated fuel injection and turbo systems along with complex emissions equipment. We use GM-approved diagnostic tools to service injectors, turbos, DEF systems, and electronic sensors with precision.
PERFORMANCE PLACE
Trusted Auto Repair in South Jordan since 1974
PERFORMANCE PLACE
Trusted Auto Repair in South Jordan since 1974
Common Duramax Diesel Engine Issues
(LB7, LLY, LBZ, LMM, LML, L5P)
Fuel System Failures
- Injector balance issues or excessive smoke (common on LB7)
- Leaking injector cups or failed seals
- CP4 injection pump failure (LML, early L5P)
- Air intrusion in the fuel system leading to hard starts
Turbocharger & Boost Problems
- Boost lag or inconsistent power under load
- Turbo vane sticking (LLY/LBZ/LMM)
- Turbo actuator failure or boost sensor issues
- Whistling or whining sounds under throttle
Emissions & DPF/DEF System Issues
- Frequent regens or DPF clogging
- DEF heater and sensor failures
- NOx sensor codes or limp mode activation
- Failed EGR valves or cooler leaks (LLY/LBZ)
Cooling System Concerns
- Overheating when towing (especially LLY)
- Leaking radiator or head gasket failure
- Water pump wear or failure over time
- Cracked coolant reservoir or hose leaks
Electrical & Sensor Problems
- Glow plug module failures (LMM/LML)
- Random DTCs tied to wiring harness wear
- Crankshaft/camshaft sensor issues causing no-starts
- Instrument cluster glitches or communication faults
Transmission Issues Under Load
- Harsh shifts or delayed engagement
- Allison transmission fluid degradation or slipping
- Pressure control solenoid or valve body failure
- Torque converter shutter, especially during towing
Protect Your Duramax from CP4 Pump Failure
The 2011–2016 LML Duramax comes equipped with a CP4 injection pump — a part known to fail without warning and send metal debris through the entire fuel system. We offer a diesel disaster prevention kit that adds extra filtration to catch debris before it spreads, helping protect your injectors, fuel rails, and high-pressure lines.
Planning to keep your truck long-term? This is a smart upgrade that could save you thousands down the road.
Duramax Diesel Services We Offer
We provide full-service diagnostics, repair, and maintenance for every generation of Duramax diesel, from the original LB7 to the modern L5P. Whether you use your truck for towing, work, or daily driving, we’ve got you covered.
Why Duramax Owners Trust
Performance Place
- 50+ Years of Trusted Local Service: We’ve been helping diesel drivers in the South Valley since 1974. We don’t chase volume — we focus on doing the job right, building trust, and keeping your truck running strong for years to come.
- Technicians Who Know Duramax Engines: From injector balance rates to turbo vane position sensors, our team understands the systems that keep your GM diesel running at its best.
- Straight Talk, No Pressure: You’ll get clear digital inspections, photos of what we find, and honest recommendations. If a repair can wait, we’ll say so. If it needs attention now, we’ll explain why — without pushing parts you don’t need.
- Backed by a 3-Year Warranty (restrictions apply):Our Duramax repairs come with a 3-year parts and labor warranty, so you can hit the road with confidence.
Why Choose Us?
Quality, Integrity & Community for 50 Years
3-Year 36, 000 Mile Warranty
We stand behind our work with a comprehensive parts & labor warranty.
Family-Owned & Operated for Over 50 Years
The longest-running auto repair shop in South Jordan, built on trust and integrity.
Experienced Master Automotive Technicians
Skilled experts equipped to handle everything from routine maintenance to complex repairs.
Customer Amenities for Your Convenience
Early and late drop-offs via lockbox, and after-hours towing services with Fort Union Towing.
State-of-the-Art Equipment
Hunter alignment machines, digital vehicle inspection reports (DVI), Autel, Snap On, Matco Maximus, Ford OEM, Mac Scout, and other advanced diagnostic scanner equipment.
Call Now to Schedule Your
Duramax Diesel Service
Whether you’re chasing a check engine light, losing power on the highway, or just staying ahead of routine maintenance — we’re here to help. We’ve served generations of diesel truck owners across South Jordan, Riverton, Daybreak, Bluffdale, Herriman, and West Jordan — and we’d be proud to take care of your truck, too.
Call us today at (801) 254-0715 or visit us at 10382 S Jordan Gateway, South Jordan, UT 84095.
