At National Transmission no transmission is removed from a vehicle unless repair is absolutely necessary. National Transmission strives to provide prompt and courteous service to all patrons of its shop. By offering free computer diagnosis or road testing they go the extra mile to ensure you that you will be well cared for by their friendly & competent staff.

Highlights, Specialties & Features

  • Pick-Up / Delivery, Shuttle Service, Loaner Car, Free Estimate, Towing, Senior / Military Discount.
  • Rental Car, warranties, Early drop off system

Professional Associations & Certifications

  • ATRA
  • ASE
  • ASA
  • APRA
  • BBB

Serviced Areas

  • Houston

Payment Options

  • American Express, Credit Terms Available, Debit Cards, Discover, Financing Available, MasterCard, VISA, Cash

Contact Details

  Person Rudy Ramkissoon
  City Houston , TX
  Zip Code 77021
  Address 4420 Griggs Road
  Phone Number (713) 741-5344
  Fax 713-741-1745

Business Representative

Rudy Ramkissoon


Products & Services

Heavy Duty Vehicle Repair & Service

Heavy Duty Vehicle Repair & Service

National Transmission is an all makes trailer, bus, truck full-service repair shop with a team of ASE - Certified Factory Trained Technicians ready to handle everything from minor repairs to complete rebuilt transmissions. National Transmission works on Caterpillar, Allison, Cummins, and all International transmissions. National Transmission offers competitive rates, quick turn around times, and high-quality service to help you keep your bottom line low and on the road!

Offered Services

Offered Services

Transmission Repair, Transmission Diagnostic, Transmission Troubleshooting, Transmission Rebuild, Transmission Replacement, Clutch Repair, Differential, Drivetrain repair, Driveline Repair, Auto Repair, Brake Repair, Suspension & Steering, Engine Repair, Auto Electric, Battery / Charging Systems, Cooling Systems, Emission Systems, Exhaust Systems, Fuel Systems, Lighting & Wipers, Filters & Fluids, Belts & Hoses, HVAC.

  • I would recommend this business

National transmission and their staff are very friendly and honest shop. I came in with my car because it was acting funny and had a couple codes. They took a look at it for free, at no charge. They did a thorough investigation on my codes that came up, they didn’t try to take my money. They were honest and wanted to research on the codes and find me the best deal. They hands down took great take care of me. We’re quick and easy on getting the car done and we’re nice enough to pick me up from work on the day my car was ready so I would be able to get it!!

Value for money
Service & support
Overall ratingExcellent

Customer Testimonials

National Transmissions, services our fleet of vehicles and always does really great work. Unlike dropping your car off at a dealer, where you have to make an appointment, wait in line to talk to a "service advisor" and then figure out how and when you're going to get your car back, National takes your car right away, asks a couple of quick questions and gets the work done. We recently had a vehicle that was stranded in Anauhac, Texas coming back from a job in Beaumont.

We called National Transmission and Donnie or Don organized a wrecker to pick up the vehicle and dropped our employee off as well. The issue turned out to be a solenoid. They completed the replacement and also replaced the transmission fluid and by Monday we were back on the road repairing computers. For all your transmission repair services I would recommend National Transmission for their honesty, fast service and dedication to customer service the old fashion way.

It was time for my car to have a transmission fluid flush and I found out about these guys after coming across their business online. The reviews were amazing so I felt it was worth the drive to travel to them to have my car serviced. The customer service was excellent and the service to my car was fast and excellent. Very professional guys over at National Transmission. I highly recommend them if you need transmission work. I will definitely be referring them to others in the future.

My Sister recommended this place to me took my vehicle to get it serviced they done an awesome job couldn't be more satisfied thank you Donnie and your Mechanic crew..

Excellent service and quality repair. I own a busy European Automotive garage and I ALWAYS send Rudy and his team our transmission work.
I know when he repairs something not only is it done right the first time he will stand behind his repairs longer than ANY other shop in town. HIGHLY RECOMMEND.

Great guys, truck wasn't running right while I was driving through Huston and I called these guys and they saw me the same day. They tried to fix the problem but it was something he couldn't do so he recommend a good shop and didn't charge me anything. Good people.

These guys did the suncoast performance kit and trans-go shift kit build in my GMC Duramax with a 5 speed Allison transmission. They had a great turnaround speed and the price was the best out of four other shops in Houston and the surrounding areas. I looked around and researched for about two weeks, and found national transmission. they kept me up to date and asked before replacing any parts and gave me options. I would recommend them to anyone looking for a build on your transmission.

My family has had several vehicles serviced by National Transmission over the years, as far back as 2007. We have all been satisfied with the service, the extremely good customer service and they honor their warranties. We highly recommend them as a repair service center.

Donnie and staff were very knowledgeable about my vehicle. Would recommend them to all my friends with service needs. Very classy, and professional service.

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