Diagnostic Tranmission Services

We can fine-tune your car

Interstate Transmission Company and Repair External Diagnostic Service. Our Centers’ certified technicians can get to the bottom of any transmission problem. With today’s more complex, computer-controlled transmissions, it takes a real expert to be able to diagnose a transmission problem correctly. Getting that diagnosis right can save you money.

Diagnostic Service is a systematic and comprehensive external evaluation of the overall performance and condition of your transmission.
A trained technician will check the level and condition of your transmission fluid:

  • A low fluid level may indicate a leak
  • Contaminated fluid has water or particles in the fluid.
  • Burnt fluid indicates damage from overheating.
  • Varnished fluid has been overheated repeatedly.
  • Normal fluid is reddish-brown and translucent, depending on transmission type, with
    no particular odor.
  • The technician will also check the level and condition of transfer case and differential fluid, where applicable.
  • The technician takes your car on a road test, to experience first-hand any problems you have
    noticed, and to evaluate your car’s performance.
  • Your vehicle will be placed on a lift to inspect the controls under the vehicle for any possible
    cause of the problem external to the transmission.
  • Finally, the technician will scan the computer for trouble codes*.

From these tests, the expert transmission technicians at Interstate Transmission Company and Repair centers can determine what type of problem you might have, and make a recommendation for whatever service is necessary.