Transmission Services for the Denver, CO, Area

Contact Us

Better yet, see us in person!

3 Year Unlimited Mileage Warranty 

We love our customers, so feel free to visit during normal business hours. We also offer a FREE initial diagnostic inspection service. 


Automotive Transmission Engineering Corp.

in Denver

Transmission Service & Repair in Denver including

Northglenn, North Metro Area

Transmission Service in Denver, CO

10901 Irma Drive Suite A, Northglenn, CO 80233, US

(303) 280-1499


Monday - Friday: 8am - 5pm

Saturday: 8:00am-12:00pm By appointment

Sunday: Closed

Drop us a line!


Our Services

Automatic Transmission Rebuild, Repair and Service

Clutch Replacement

Transfer Case Repair

Manual Transmission

Differential Repair

Classic Cars & Hot Rods

Welcome Visitors

About Us

General Maintenance And Repair

Our transmission technicians not only inspect your vehicle to make sure the transmission is in tip top shape but while they are looking for transmission issues they will make you aware of any other issues that they may find.

Any additional services can be performed as requested. Use our shop as a one stop shop. Use us for not only highly complicated things like transmissions, but for general repairs as well.

About our technicians

Our technicians are not paid by job like in other shops. We make sure the technician has the time needed to repair your vehicle properly. The transmission them selves are complex. Our company insures the technicians are supported using current or best technology available. Some of our technicians have been doing this going on 40 years.  

Our standard warranty

3 Years Unlimited Mileage Parts & Labor

This comes standard with all of our re-manufactured transmissions.

12 Month 12,000 Mile parts warranty minimum on new clutch sets. Extended warranties are available.

Automatic Transmission & Transfer Case

We re-manufacture our own

 3 Year Unlimited Mileage Transmission.

Automatic transmissions are very complicated with today's computer systems controlling them. We also rebuild the valve body in most cases. Our company uses some of the best technology available to identify the cause of future problems by using better quality parts and re-building procedures. Holding this standard gives our company the ability to offer a long term warranty.  

Software PCM Flashing Available

Our company uses the latest equipment available to be able to re program the vehicles PCM/ECM/TCM modules. Most re-flashing prices start at $275.00 and up depending on the vehicles manufactures license fees.

Often times software can cause problems with the vehicles transmission and engine. Many times the vehicle will have software updates that the manufacture later offers. These updates are to correct problems later found as the vehicle ages and the manufactures discover the correction using software updates.

Towing Services

We offer Free Towing, with approved transmission rebuilds in the Denver metro area. 

Look Deeper Inside

Valve Body Service

Internal Seals & Friction components

Internal Assemblies

More of our services

Computer Replacement and programming on site

Our company stay's in the fast lane to keep up with the latest repair techniques and equipment. The computers today are in more control then ever before.

Here is our new addition to PCM/TCM Software Systems

ATEC, has taken the time to grow with the industry we now can change software and correct issues when the situation is needed.  We want to stay steps ahead .

Engine performance & drivability can cause transmission problems

 Frequently engine running problems can cause transmission symptoms or create failures in the transmissions performance and life cycle   

September deals

Take advantage, ask for this months current deals!

Yukon Axle & Gear Parts

We are proud to offer and carrier Yukon parts. Our company repairs and services many 4WD/SUV and Trucks that need quality new parts to pass the high demands our Colorado back country demands. Yukon has the high performance parts to put the finish on a quality repair.

Engine Repair

Our company has many options from engine repair to engine rebuild services. Our goal is to reduce the costs without reducing quality to maximize value.