H&M Transmission and Automotive was developed around troubleshooting, repair and or rebuilding transmissions for all automobiles and light duty trucks. 

Our goal is maintain your transmission, or get it repaired quickly to keep you on the road.

Whether it’s a simple repair, service, or a complete rebuild you can be sure we are ready to help. Our knowledgeable staff will analyze shifting issues, engine light and or poor performance to determine the extent of any damage.  Once we know the problem, we’ll devise a plan for repair and provide you with solutions to get your vehicle running as intended—we have the answers.

We are proud members of the Automatic Transmission Rebuilders Association, which provides us a wealth of information and resources to overcome the most difficult-to-diagnose issues.  They also back up the “Golden Rule Warranty,” so you have the comfort of knowing you’re covered by the largest network of automatic transmission repair specialists in the world.

Not only do we specialize in automatic transmissions, we also repair manual transmissions for all makes and models, both foreign and domestic.  This includes clutch removal and repair for all truck and automobile applications.  To optimize your transmission, we are able to repair and enhance driveline components for rear wheel drive, front wheel and 4 wheel and or all wheel drives.

Preventative maintenance is the key to keeping your transmission performing as intended.  We recommend transmission “Service” on regular intervals.

  • Automatic
  • Clutches
  • Four-wheel drive
  • Front-wheel drive
  • Manual

Transmission Service vs Flush

The other day, one of our customers asked what we charge for a Transmission flush.  We told him that we don’t do them; we recommend a “service” instead.  He asked why; “isn’t a flush the same as service?”  The simple answer is no.  Over time, like engine oil, transmission fluid breaks down and should be replaced.  It’s important to change the fluid and filter by removing the transmission pan and make any internal adjustments to prevent premature failure.  We call this procedure “Transmission Service.”  Conversely, a transmission flush procedure is usually done with a “flush machine” which exchanges old fluid with new.  Some technicians will put an additive into the process which breaks up particles and debris.  Since the transmission pan isn’t removed, the filter cannot be changed.  The extra debris from the “flush” remains in the transmission and may cause premature failure.  Debris often times interferes with teflon coated values and other internal parts, which are essential to shifting and good performance.

We see at least 2 out of 10 vehicles which have received a recent “flush” procedure experience some kind of failure or require extensive repair.”  Now that our customer understood why a “service” is better than a flush, his next question was; “how often do I need to get my transmission serviced.”  It’s a great question with much debate.  Most manufacturers recommend between 80,000 and 100,000 miles.  That’s great for warranty, but doesn’t account for all driving conditions.  We recommend annually or 30,000 miles and here’s why.  In Colorado, the altitude, long commutes, and heavy traffic increase wear and tear on the transmission as well as the rest of the vehicle.  Heat is the biggest challenge.  The transmission fluid is designed to minimize friction and keep the transmission cooler.  Heat breaks down the fluid which causes the transmission temperature to rise higher and eventually leads to increased wear.  Regular transmission service is simple maintenance and can save you thousands of dollars down the road.

Paul Harris of H&M Transmission and Automotive invites you to come by and take advantage of their Transmission Service special…