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A Affordable
Transmissions Center

Thornton Differential Repair - All Makes, Models, Domestic, and Imports

If you drive an automobile, we have you covered. We rebuild and repair front and rear differentials on all types of cars and trucks.

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Automatic Transmission in Thornton

A-Affordable Transmissions Center Repairs & Rebuilds Differentials for Less!

Differential repair is a complex and intricate repair job. Measurements and adjustments must be accurate in a differential rebuild procedure.

A-Affordable Transmissions is one of the most highly respected differential repair and rebuild centers in all of Colorado. We take the time to walk every customer through the repairs process.

The initial inspection will not cost you a cent, and we will wait for your approval to begin repairs. In addition, you can expect educated answers to your questions.

North Denver’s Differential
Repair & Rebuild Specialists

When you visit our repair facility you can expect:

Different differential repair and rebuild warranties and repair types that fit your need.

A differential inspection that includes a road test, preliminary testing and electronic scan.

Written differential rebuild and repair estimates are provided, so you can decide what to do.

No work will be done unless you agree and fully understand the process.

Extreme Transparency, no hidden anything. We will take your differential apart if needed to get a cost of repair.

All work is done on site at our repair center, which means no middle person mark up.

We don’t just advertise that we are a differential experts. We know how to rebuild differentials.

You will get a complete checklist of everything that needs to be repaired as well as what it will cost before any work begins.

A-Affordable Transmissions Center has rebuilt thousands of differentials on site.

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How to Care for Your Differential

Differential oil is one of the most-overlooked automobile maintenance tasks. Because the differential is at the rear and under the car, it gets none of the treatment that the engine does.

Luckily for you, differentials are in most cases pretty dependable. However, proper maintenance is the key to a long lasting differential. You won’t be getting very far for very long if lubrication in the differential fails. As a result, you will likely be looking at a differential repair.

Fortunately, you only need to change this oil every 30,000 to 60,000 miles (as always, check your owner’s manual).Give us a call and we will be happy to find the answers to your differential questions if your manual is not available.

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transfer case removed from a car

Warning Signs of a Failed Differential

Modern cars are now made with computerized differentials. As sophisticated as these modern differentials can be, however, errors can make operation considerably less smooth.

In today’s automobile, a check engine light is often one of the first telltale signs that your car is having trouble. You might also notice some strange sounds or vibrations when something goes awry with your vehicle’s differential. In other situations, your differential might vibrate gears in unpredictable ways, resulting in uneven speeds and inconsistencies while driving.

A bad differential can sound in different ways

For example, you may experience a whine to a rumble, or loud clanks when going from sitting still to moving. Another sure sign it’s differential is if the symptoms get worse when coasting compared with when accelerating. The noise generally comes from the rear, but it can be hard to locate for sure depending on the volume level.

While some of these problems might seem negligible in the moment, ignoring such issues could make the situation worse, decreasing the life of your differential over time and increasing the costs of differential repair.

mechanic checking car suspension
The major internal components of a differential includes a case, ring & pinion gear, spider gears, side gears a carrier and axles

First, there are bearings and caps. Bearings and caps tightly hold the various gears & carrier in place in the differential case. These gears, including the side gears and spider gears, are positioned inside the differential carrier and are attached to the axles.

In addition to side gears and spiders gears, the differential includes ring and pinion gears. The ring gear is attached to the outside of the carrier and the pinion gear is positioned in the differential housing and is supported by bearings. Both the ring and pinion gear have teeth, which are precisely machined to allow the gears to mate each other smoothly.

The ring and pinion gears along with the carrier inside your differential case are what allow your auto to have two rear wheels. Similarly to manual transmissions, ring and pinion gears tooth counts determine gear ratio.

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Why choose A-Affordable Transmissions Center to repair your differential?

We perform all differential repair services in house, and all differential repair and rebuilds will be warrantied. We perform differential repair inspection at no charge. In addition, our repair costs are lower because our technicians rebuild or repair the differential in your vehicle.

Every differential can be repaired or rebuilt. We will reuse the good parts and will only replace what is needed to bring your differential back to proper working order.
In business since 1979, you can rest assured we will be here for you if a problem should occur. WE TAKE PRIDE IN OUR WORK and back it up with warranties to give you the peace of mind you want.

Bring your vehicle to a professional differential rebuild mechanic. Give us a call now for a no hassle, no obligation insight of your Differential Repair needs.

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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!

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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

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Service Area


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

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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
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Transmission Center

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