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Major Repair

Engine Replacement

Light- & Medium-Duty

When an engine overheats badly or a piston strikes a valve, replacement can cost less than repair. Our certified technicians source the right gas or diesel engine and install it to keep your light- and medium-duty truck working.

Schedule Service
Call (970) 352-7200
Certified technician performing an engine replacement on a pickup truck at Truck City Service in Greeley, CO

Quick Answer

Engine replacement makes sense when internal damage — a thrown rod, a struck valve, severe overheating — would cost more to repair than to replace. Truck City Service sources gas or diesel engines for light- and medium-duty trucks and installs them to factory spec.

6
Makes We Service
10+
Yrs Commercial Experience
100%
Quality-Checked Parts
7-6
Mon–Fri Service Hours

Replace or Repair? We’ll Give You the Real Number

Pickup truck overheating on the side of the road with steam from the engine bay

Engine replacement is a big decision. We diagnose the actual damage first, then give you a straight comparison of repair cost versus replacement cost — no upsell, just the numbers.

A quote you can’t verify is a quote you shouldn’t trust.

“We walk customers through exactly what failed and why repair isn’t the better option before we ever talk about a replacement engine.”

— From our service bay, Truck City Service

What Truck City Service Handles

Technician inspecting an open engine bay on a pickup truck

Scope

Light- & Medium-Duty Engines

Gasoline and diesel engine replacement for the light- and medium-duty trucks that make up your daily fleet.

Sourcing

Parts Procurement

Our well-stocked parts department sources the correct engine for your make and model, gas or diesel.

Support

Ongoing Maintenance

After replacement, routine oil changes, fluid service, and inspections keep the new engine running right.

!Medium-duty is the largest class we service. We do not service Class 7–8 big rigs / semis or large motorhomes. Not sure where your truck falls? Call us and we’ll tell you straight.

Signs an Engine May Need Replacing

  • Engine overheated significantly before shutdown
  • Loud knocking followed by loss of power
  • Metal shavings found in the oil
  • Piston or valve damage confirmed on inspection
  • Repair estimate exceeds the engine’s replacement cost
  • Repeated failures after previous repairs

Real 5-Star Reviews

★★★★★
Real 5-star reviews from our customers  ·  Read & leave reviews on Google
★★★★★

“The team did an excellent job on our truck, communicated clearly, and got us back on the road. Highly recommend!”

Kitty Horner
★★★★★

“Matthew was friendly each time we spoke and the estimates were accurate and reasonable.”

Cade Mawson
★★★★★

“I’ve been coming here for 25 years for all types of mechanical work, and the service has always been great.”

Lyle Luckeroth

Frequently Asked Questions

How do I know if my engine needs replacing instead of repair?
We diagnose the actual internal damage and compare the repair cost to a replacement engine, then give you both numbers.
Do you replace both gas and diesel engines?
Yes, we source and install both gasoline and diesel engines for light- and medium-duty trucks.
How long does an engine replacement take?
Timing depends on parts availability and vehicle complexity; we give you a realistic estimate before starting.
Will a new engine come with a warranty?
Warranty terms depend on the specific engine sourced; we review coverage with you before the job begins.
What causes an engine to fail beyond repair?
Severe overheating, a thrown rod, or a piston striking a valve are common causes of damage that make replacement the better option.
Do you service heavy-duty engines too?
Our engine replacement work focuses on light- and medium-duty trucks, not Class 7–8 big rigs or large motorhomes.
Can regular maintenance prevent engine failure?
Yes. Routine oil changes and fluid service catch small issues before they become the kind of damage that requires replacement.
How do I schedule an engine inspection?
Book online through our scheduling page or call (970) 352-7200. We are open Monday–Friday, 7 AM–6 PM.

Visit Truck City Service in Greeley, CO

Truck City Service

1415 1st Ave, Greeley, CO 80631

(970) 352-7200

Hours

Monday–Friday: 7:00 AM–6:00 PM

Saturday & Sunday: Closed

Serving

GreeleyWindsorLovelandFort CollinsNorthern Colorado

Keep The Fleet Running

Get a straight repair-vs-replace comparison before you decide.

Schedule Service
Call (970) 352-7200