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An hour of our time can save you an engine.

Pre-Purchase Inspection

Used diesel trucks hide expensive history. We scan every module for stored and history codes, check for deleted or tuned emissions equipment, look for coolant and oil cross-contamination, test injector balance and inspect the frame, suspension, brakes and driveline before you hand over money.

You get a written report with photos and a realistic estimate of what the vehicle will need in the next twelve months, so you can negotiate or walk away with facts.

Typical time
1–2 hours
Coupon
$25 off
Report
Written + photos
Coverage
Diesel & gas

What's included

Scope of work

  • Full-module scan with stored and history codes
  • Emissions equipment verification (delete/tune detection)
  • Injector balance and fuel-system testing on diesels
  • Compression or cylinder-contribution testing
  • Coolant combustion-gas and oil condition testing
  • Frame, suspension, steering and driveline inspection
  • Brake and tire measurement
  • Written report with photos and a 12-month cost forecast

Symptoms we fix

Sound familiar?

  • Buying a used Power Stroke, Duramax or Cummins
  • Private-party sale with no service records
  • Seller says it just needs a sensor
  • Truck has been tuned, lifted or modified
  • Auction or out-of-area purchase
  • Price seems too good for the mileage
Describe it to us

How we work it

The four steps, every time

  1. 01

    Schedule

    You or the seller brings it in — an hour is usually enough for a full picture.

  2. 02

    Inspect

    Scan, test, measure and photograph everything that affects value or safety.

  3. 03

    Report

    Written findings, graded by urgency, with estimated repair costs.

  4. 04

    Advise

    We tell you plainly whether it is a good truck, a project, or a problem.

Pre-Purchase Inspection being performed at A&S Diesel in San Jacinto

Questions

Straight answers

Can you inspect a truck at the seller's location?

The full inspection needs our equipment and a lift, so the vehicle has to come here. Most sellers will agree to that.

Will you tell me what it is worth?

We will tell you what it needs and what those repairs cost. That is the number that actually moves the price.

Can you tell if it has been deleted?

Yes. Missing aftertreatment hardware and altered calibrations both show up in the scan and the inspection.

Related terms

What people search for this job

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Tell us what it's doing. We'll tell you what it takes — in writing, before any work starts.