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Transmission Services

External Diagnostic Services




ExternalDiagnosticServices

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.


Jacksonville (Westside)
7532 103rd St
Jacksonville, Florida 32210
904-772-7557 | M-F: 8:00am-6:00pm
Jacksonville (Mandarin/Southside)
10022 San Jose Blvd
Jacksonville, Florida 32257
904-262-2900 | M-F: 8:00am-6:00pm
Jacksonville (Dunn Ave, Northside)
10691 Biscayne Blvd
Jacksonville, Florida 32218
904-757-5106 | M-F: 7:30am-5:30pm
Jacksonville (Arlington/Southside)
8721 Atlantic Blvd
Jacksonville, Florida 32211
904-724-1477 | M-F: 8:00am-5:30pm
Orange Park
356 Blanding Blvd.
Orange Park, Florida 32073
904-272-7166 | M-F: 8:00am-6:00pm
St. Mary’s
4396 Highway 40 East
St Marys, GA 31558
912-882-1700 | M-F: 8:00am-5:30pm
St. Augustine
2664 US 1 South
St. Augustine, Florida 32086
904-797-5000 | M-F: 8:00am-5:30pm


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