HD Pitstop Diesel Mechanic
Class 8 trucks · Fleets · Owner-operators

Diesel repair that keeps your fleet rolling.

Diagnostics, preventive maintenance and repairs for heavy-duty trucks — with live status on every unit, photos of the work, and invoices you can pay online.

What you see in the portalUnit 1118
In Repair
Latest updateFront brake chambers and slack adjusters replaced. Road test this afternoon.
Services

What we work on

Engine diagnostics

Check-engine lights, fault codes, aftertreatment (DPF, DEF, EGR) and loss of power.

Preventive maintenance

Scheduled PM services — oil, filters, fluids, greasing and a full walk-around.

Brakes & air systems

Brake chambers, slack adjusters, drums, air leaks, compressors and dryers.

Electrical & lighting

Batteries, starters, alternators, wiring and DOT lighting.

Pre-Inspections

DOT-focused tractor inspections, fifth wheel included, with a report for your files.

Request a Pre-Inspection →

General repair

Suspension, steering, cooling, tires and anything else keeping a unit off the road.

How it works

From drop-off to back on the road

01

Request service

Tell us the unit, the problem and where the truck is. Add photos if you have them.

02

We diagnose

A tech checks the truck and posts what we found right in your portal.

03

Track every step

Follow status, parts ETAs and photos of the old and new parts as the job moves.

04

Pick up & pay

Your invoice and online payment link are waiting in the portal when the truck is ready.

Fleet accounts

Every unit's history in one place

Fleet customers get a portal login that shows all their trucks, past work orders, Pre-Inspection reports and invoices — no more digging through emails.