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Transmission Services

External Diagnostic Services


Jacksonville & St. Mary's AAMCO
External Diagnostic Services

The Jacksonville & St. Mary'sAAMCO External Diagnostic Service is the best transmission checkup available anywhere. Our Jacksonville & St. Mary'sCenters’ certified mechanics 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 a lot of money.

Schedule a Service Call AAMCO! (877) 646-0229

External Diagnostic Tests

The Jacksonville & St. Mary's AAMCO External Diagnostic Service is a systematic and comprehensive external evaluation of the overall performance and condition of your transmission. 

  • A trained mechanic 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 odor.
    • The mechanic will also check the level and condition of transfer case and differential fluid, where applicable.
  • The mechanic takes your automobile on a road test, to experience first-hand any problems you have noticed, and to evaluate your automobile's performance.
  • Your automobile will be placed on a lift to inspect the controls under the automobile for any possible cause of the problem external to the transmission.
  • Finally, the mechanic will scan the computer for trouble codes.

From these tests, the expert transmission mechanics at Jacksonville & St. Mary's AAMCO auto repair shops can determine what type of problem you might have and make a recommendation for whatever service is necessary. Our comprehensive approach to diagnosing the source of the problem is what sets Jacksonville & St. Mary's AAMCO apart.

10022 San Jose Blvd.
Jacksonville, FL 32257
(904) 262-2900 | 8:00 AM-6:00 PM
8721 Atlantic Blvd
Jacksonville, FL 32211
(904) 724-1477 | 8:00 AM-6:00 PM
7532 103rd St.
Jacksonville, FL 32210
(904) 772-7557 | 8:00 AM-6:00 PM
10691 Biscayne Blvd.
Jacksonville, FL 32218
(904) 757-5106 | 7:30 AM-5:30 PM
4396 Highway 40 East
St. Mary's, GA 31558
(912) 882-1700 | 8:00 AM-6:00 PM

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