MON – FRI: 8 AM – 5:30 PM
CLOSED SAT & SUN
MON – FRI: 8 AM – 5:30 PM
CLOSED SAT & SUN
HIGH QUALITY
PARTS & WORK
24 MO/24K MI
WARRANTY
DIAGNOSTIC
INSPECTIONS
TRUSTWORTHY
& FRIENDLY SERVICE
Don’t take your diesel to a shop that only occasionally works on diesel trucks.
Branch Automotive specializes in diesel diagnostics, repair and maintenance—from routine service to complex engine and emissions work.
We specialize in diesel vehicles—not just occasionally service them.
ASE Master Technicians, World Class expertise and factory-trained experience.
Real diagnostics, real photos, real answers - nothing hidden under the hood.
Most repairs are backed by a 24-month / 24,000-mile warranty.
I have had the most trouble finding a mechanic to look at my E-450 bus. Not only were these guys able to fit the bus in their shop, they were able to get me in quickly. They were incredibly responsive and communicative. I worked with Daniel and he and I spoke several times and at length about the necessary work, possible work, and potential future work that my vehicle needed. This is an incredible shop and I know I’ll be coming back when my bus needs more work. Thank you!
– SARI B.
Bryan at Branch Automotive went out of his way to schedule us in to an already packed Friday work load! We were traveling and needed to head home the next day. Our truck was repaired that day so we were able to leave on schedule. Can’t say enough positive things about the work that was done and the customer service. Quality business like this is hard to find now days!!
– DENNIS F.
Very reasonably priced. Just got an alignment as well as emissions test for my out of state purchased Ford F250 Super Duty Diesel and standard emissions places don’t do emissions on diesels. Did the alignment after I put new tires on. Very easy to schedule and the pricing was very fair 👍
– DENVERFIXIT
Bryan at Branch Automotive went out of his way to schedule us in to an already packed Friday work load! We were traveling and needed to head home the next day. Our truck was repaired that day so we were able to leave on schedule. Can’t say enough positive things about the work that was done and the customer service. Quality business like this is hard to find now days!!
– DENNIS F.
Very reasonably priced. Just got an alignment as well as emissions test for my out of state purchased Ford F250 Super Duty Diesel and standard emissions places don’t do emissions on diesels. Did the alignment after I put new tires on. Very easy to schedule and the pricing was very fair 👍
– DENVERFIXIT
I have had the most trouble finding a mechanic to look at my E-450 bus. Not only were these guys able to fit the bus in their shop, they were able to get me in quickly. They were incredibly responsive and communicative. I worked with Daniel and he and I spoke several times and at length about the necessary work, possible work, and potential future work that my vehicle needed. This is an incredible shop and I know I’ll be coming back when my bus needs more work. Thank you!
– SARI B.
Cummins
Duramax
Power Stroke
&
Gas Trucks · Light-Duty Trucks · Heavy-Duty Trucks · Fleet Vehicles
Branch Automotive is Littleton’s trusted diesel repair specialist for the greater Denver metro area. Located on County Line Road, we serve diesel truck owners from Highlands Ranch, Centennial, Parker, Englewood, and beyond — all within easy driving distance of our shop.
From routine diesel maintenance to complex diesel engine services, our team handles every job with factory-level diagnostics and ASE-certified expertise. We work on everything from light-duty pickups to heavy-duty rigs, including Duramax, Cummins, and Power Stroke engines. Whether you need a tune-up, a turbo replacement, or a full engine overhaul, we have the tools, training, and experience to do it right the first time.
We also offer top-tier repair services for fleets. If your business relies on commercial trucks, Branch Automotive is the dependable diesel partner local fleet operators trust.
Branch Automotive supports businesses that depend on heavy-duty trucks and work vehicles throughout the metro area. Whether you run five diesel trucks or a full-scale operation, keeping your vehicles on the road is critical to your bottom line. Downtime costs money — and we understand that.
Our maintenance programs are designed to minimize disruption. We offer priority scheduling, thorough multi-point inspections, and detailed service records for every vehicle you operate. Our diesel technicians handle the full range of truck repairs — from semi-truck repair and brake service to diesel transmission work and DPF cleaning.
We also provide breakdown services for diesel trucks that cannot make it to the shop under their own power. If you need dependable support, call Branch Automotive today to get a quote and set up a maintenance plan.
Contact Branch Automotive at (303) 771-2224 to schedule an appointment for emissions testing, maintenance, or repair. We are conveniently located at 6030 East County Line Road, Littleton, CO 80126.
While we’re located in Littleton, CO, we also serve drivers from:
