
Truck Axle Repair
Drive and steer axles, hubs, wheel seals and bearings on tractors and trailers.
Learn More about Truck Axle Repair
Freightliners are the most common trucks on Sacramento freight lanes, which means dealer service departments are booked and your Cascadia doesn't care. Pro Truck Services is an independent shop — not affiliated with Freightliner or Daimler Truck — that services Freightliners every week at working-truck prices and working-truck turnaround.
Cascadia (the fleet workhorse), Columbia and Century still earning their keep, and M2 106 medium-duty trucks doing local and vocational work. Sleeper or day cab, owner-operator or fleet.
North Highlands shop on the I-80/Watt Avenue corridor, or mobile service at your yard — and emergency roadside when a Freightliner quits on the corridor. English and Russian spoken.
Freightliner is a Daimler Truck brand, and the Cascadia is the highest-volume Class 8 truck on North American highways. Most are built around Detroit DD13 or DD15 power, frequently paired with the DT12 automated manual transmission — a combination that behaves as an integrated system, so a driveability complaint often needs the engine and transmission looked at together rather than in isolation.
Volume has a practical upside for owners: parts for a Cascadia are generally easier to source than for lower-production chassis, which usually means less waiting on a truck that is already down. That is one of the few places where running the common truck genuinely pays.
Emissions and aftertreatment stay in-house — forced regens, DPF cleaning and replacement, and DEF and SCR repair.
Three facts shape most Cascadia repairs. First, the DD13 or DD15 and the DT12 automated manual share data and decisions, so a power or shift complaint is read across both before either is blamed. Second, many DD13 and DD15 trucks from the GHG14 generation onward package the DPF, SCR and DEF dosing into a single “One Box” aftertreatment unit (newer Gen 5 engines use a different layout); faults there set codes that look like engine problems, and the fix is usually a doser, a sensor or a regen strategy rather than the box itself. Third, the M2 106 medium-duty runs a different engine family (Cummins or Detroit DD5/DD8) and often hydraulic brakes, so an M2 and a Cascadia in the same yard are two service programs. Older Columbias and Centurys with Series 60 or earlier Detroit power are simpler engines whose owners mostly want them kept honest.
No — we're independent, and we say so plainly. What you get instead of a factory sign is faster scheduling, direct access to the mechanics, and estimates approved before work starts.
Factory warranty work belongs at a dealer — that's how warranties work. Everything after warranty, or anything you're paying for yourself, is exactly what we're for.
Derates are one of our most common calls. Call (916) 571-8888, describe the dash lights, and we'll tell you whether it should drive in or we should come to it.
Often neither in isolation. The DT12 takes its cues from the engine’s data, so a sensor, boost or aftertreatment fault can produce a shift complaint. The fault history across the whole powertrain is read first; see transmission slipping or hard to shift.
In our shop at 3036 Orange Grove Ave, North Highlands, CA 95660, for trucks from across the Sacramento region. Some jobs can be done at your yard or at the roadside instead — see mobile truck repair, or call (916) 571-8888 and ask.
Sacramento-area service pages
32 Google reviews, 4.9 stars, from the owner-operators and fleets who keep bringing their trucks back — read them, then call and judge us yourself.
Good guys! Today I left the car in the morning, everything was done by lunchtime! I will come here often! I recommend.
Good, honest mechanics! They always get me in quickly, the prices are great. Definitely the nicest auto shop I've ever been to. Honest, efficient and prompt.
Great service, thank you guys for getting things done quickly and properly. Will trust becoming a regular here.

Drive and steer axles, hubs, wheel seals and bearings on tractors and trailers.
Learn More about Truck Axle Repair
Air brake inspection and repair — chambers, slack adjusters, drums, linings and pressure problems.
Learn More about Truck Brake Inspection and Repair
California emissions inspections for heavy-duty diesel trucks.
Learn More about CARB Inspection
Radiators, fans, thermostats, EGR coolers and the overheating that threatens the engine.
Learn More about Truck Cooling System Repairs
Federal periodic (annual) inspections performed in-house, with repairs in the same bays.
Learn More about DOT Inspections
U-joints, carrier bearings, driveshafts and the vibration that announces them.
Learn More about Truck Driveline Repair
Charging, starting, wiring, lighting and the intermittent faults that mimic bigger problems.
Learn More about Truck Electrical Diagnostics & Repair
Breakdown response: what to do first, what is fixable roadside, and when a tow is the right call.
Learn More about Emergency Truck Roadside Assistance
Derates, no-starts, power loss, smoke and hard starts — diagnosed before anything is replaced.
Learn More about Truck Engine Diagnostics and Repairs
EGR and DPF service — the aftertreatment work that keeps a modern diesel legal and out of derate.
Learn More about EGR & DPF Repair
Leaks, clamps, flex pipes, manifolds and sensors upstream and downstream of the aftertreatment.
Learn More about Truck Exhaust System Repairs
Recurring maintenance for multi-truck operations — one shop for PM, compliance and repairs.
Learn More about Fleet Maintenance ProgramsDon't let a truck breakdown disrupt your operations. Contact us today! Our friendly customer service team is ready to assist you and get your truck back on the road in no time.
3036 Orange Grove Ave
North Highlands, CA 95660