A-affordable Transmissions Center logo
A Affordable
Transmissions Center

Thornton, CO Transmission Rebuild Shop

Schedule Online
Automatic Transmission in Thornton

We Rebuild Transmissions

All Makes, All Models, Domestic & Import

Give us a call or email, we are happy to answer your questions.

Our Transmission Rebuild Process


This is normally done on the hard parts that may be used in the re-assembly. Thorough cleaning is done on these parts to remove dust, grease, and any debris that might have infiltrated into the system.


After disassembling the transmission and cleaning of the necessary parts, the mechanic does an overall check to affirm the re-use of the parts that have not been damaged.


The transmission is now put back together and the mechanic has added any new updates to modify the transmission as requested by the customer.

A-affordable - Banners 4

Transmission Inspection Checklist

During a transmission rebuild the technician inspects every item related to the transmission.

Transfer Case

Check to determine if the seals or gaskets are damaged.

Control cables

Ensure that the throttle pressure is not broken. Also make sure that the shift cables are in the right condition.

Main Engine Rear Oil Seal

Confirm its condition to determine whether it is leaking or not. Leaking seals should be changed.

Drive Shaft

Inspect to ensure that the u-joints are in the correct shape. Also ensure that the yoke is not worn-out.

Transmission Mounts

Check to ensure that the mounts are not broken.

img - handsome-car-mechanic-working-automotive-service-center
img - side-view-transfer-case-removed-car-which-lies-desktop-auto

Transmission Assembly

Cleaning the Transmission Cooler

Before installing the rebuilt transmission, the technician should clean the automatic transmission cooler. This ensures that the debris that may be present is removed to avoid any harm of the newly rebuilt transmission.

Reinstallation of the transmission

This step will include adding specific fluid to the transmission. The fixed transmission parts are put together and then a thorough inspection is done to ensure that they are properly fixed. A final quick test drive is performed and any further adjustments are done at this point.

Quality Assurance Check

This is the final step which involves checking for missing or loose bolts, correct fluid level, fluid leaks, and making sure that electrical harnesses are properly fastened. A final check is performed on the vehicles computer to ensure that there is proper co-ordination.

A-affordable - Banners

Transmission Replace or Rebuild

Sometimes a customer is at cross-roads on whether to go for transmission replacement or transmission rebuild. The decision of choosing between the two options lies on the damage that has been caused to the transmission. If there is too much damage, a technician may recommend a total replacement which is a very costly process.

Transmission rebuild is recommended when a minimal number of parts need to be fixed to bring transmission back to normal. It is a cost friendly route as long as you find the best transmission mechanic to rightfully identify the parts that need to be fixed. This means that the parts that are in good condition will be left with a little maintenance performed on them, and the bad will be replaced.

mechanic presenting to a female client

Use our A.I. to troubleshoot your transmission issues

Use our experimental A.I. powered by ChatGPT to troubleshoot your transmission issues! Please note this is EXPERIMENTAL only and should be followed up with diagnosis by our professional mechanics. Any feedback on this feature is welcome and appreciated!

Have a Question?
Get a Quick Response 7 Days a Week!

Google reCaptcha: Invalid site key.

Expert replacement, repair and installation services on all makes and models. Proudly Serving Colorado Since 1979.

You can trust A-Affordable Transmissions Center to replace, repair, and install transmissions of any make or model. Serving the entire Front Range since 1979. For all of your transmission needs in the greater Denver area, please contact us to schedule a quote.

Katelyn Scoma

These guys are SO great. Great job and a great price! My family and I (and even friends that I referred) drive an hour to come to them. They do great work and have excellent customer care! Even when it was closing time they were so kind and helpful, making sure I understood and was satisfied with everything, instead of just rushing me out the door. 100% recommend them!

Gay Vierra

If you have any transmission work needed you HAVE to bring it to A-Affordable Transmissions Center! Dave is the best!! He has worked on two of my cars and even diagnosed a non-transmission related problem!! He is one of the most reputable business owners I have worked with in a long time!! Choose A-Affordable and you won’t regret it!!

Seth Hughes

Hello, had the transmission in my 66 Ford Fairlane rebuilt in October 2021. Nearly 2 years later still working great no leaks shifts just as nice as it did when I picked it up. Great customer service after the rebuild would totally recommend.


Take your car here. If you have any transmission issues this is the absolute best transmission shop you will find in Denver. My cars transmission lost reverse gear, and had a slew of other issues going on internally that I didn’t even know about, requiring a complete transmission rebuild. Devin was absolutely phenomenal, and let me know everything that was happening during the entire service. These guys absolutely stand by their word, and work. The diagnostic is only $90. With 250k miles, I have a rebuilt engine with 50k miles on it, and now a new, rebuilt transmission. Flawless. Another 4×4 lives another day. Drives smoother than ever. Thank you guys!

Cody Dent

Brought my 08 pontiac grand prix for a rebuild of the transmission, car was done within two days of dropping it off and the price quoted was correct and affordable (for a transmission rebuild) the shop is very professional and knowledgeable also friendly and don’t make you feel dumb or belittle you for asking questions. Also check back in with you on their work a week or two later. Would definitely return to these guys for any transmission work I’ll need on any of my vehicles and will always recommend them to friends, family and anyone needing work done. Thank you guys!!

Eleanore Thayer

I can not rave enough about thus place. Randy and his team are fast, friendly, and KNOW what they are doing! I had my clutch replaced here after being less than happy with another company doing it twice and blowing it both times in two years… This team is transparent and care about the quality of their work. If you need transmission work or your clutch replaced, this is your company. They made my Subaru ready for the road and I couldn’t be happier! 10/10 tldr: use this company and you will be a happy camper

All Makes and Models – Domestic and Import

acura logoAudi logoBMW logoBuick logoCadillac logoChevrolet logoChrysler logo
Dodge logoFiat logoFord logoGMC logoHonda logoHummer logoHyundai logo
Infiniti logoIsuzu logoJeep logoKia logoLexus logoLincoln logoMazda logo
Mercedes Benz logoMercury logoMini logoMitsubishi logoNissan logoOldsmobile logoPontiac logo
Porsche logoRAM logoSaturn logoScion logoSubaru logoSuzuki logoToyota logo
Volvo logoVolkswagen logo

Service Area


Since 1979, we proudly serve North Denver, and the below Suburbs …

our location

get directions

Directions to A-Affordable
Transmission Center

A-Affordable Transmission Care Center proudly serves the Denver Metro Area with convenience at two locations, providing exceptional transmission services. Our first location, strategically positioned in South Denver, caters to the bustling energy of the city, ensuring easy accessibility for our valued customers. Meanwhile, our second location, situated in North Denver, extends our commitment to excellence, offering residents in that area the same reliable and expert transmission care. With both centers, we prioritize efficiency, quality, and customer satisfaction, delivering unparalleled transmission services to keep your vehicle running smoothly on the diverse roads of the Denver Metro Area.

Directions To A Affordable In Thornton

52nd & I25 to A Affordable Transmission Center Thornton

  • Head north on I-25 N - 1.4 mi
  • Keep right to stay on I-25 N - 1.7 mi
  • Take exit 219 toward 84th Ave - 0.2 mi
  • Keep left at the fork to continue toward 84th Ave - 240 ft
  • Use any lane to turn left onto 84th Ave - 0.3 mi
  • Continue onto 84th Ave Pass by Burger King (on the right) - 0.4 mi
  • Turn left onto Greenwood Blvd 
  • Destination will be on the left - 207 ft
  • A-Affordable Transmissions Center 780 W 84th Ave, Thornton, CO 80260

I36 & Wadsworth to A Affordable Transmission Center Thornton

  • Head southeast on US-36 E - 6.6 mi
  • Exit onto US-287 N/N Federal Blvd - 1.6 mi
  • Turn right onto W 84th Ave Pass by Advance Auto Parts - on the right in 1.5 mi
  • Turn right onto Greenwood Blvd
  • Destination will be on the left - 207 ft
  • A-Affordable Transmissions Center 780 W 84th Ave, Thornton, CO 80260
Have a Question?
Get a Quick Response 7 Days a Week!

Google reCaptcha: Invalid site key.

Contact A Affordable
Transmission Center

Google reCaptcha: Invalid site key.