AAMCO Transmissions AAMCO Transmissions also does vehicle repairs on Tune Ups, Maintenance and feature these products: Brakes, Transmissions. They are located on 73A Westbank Expy in Gretna. AAMCO Transmissions They have not yet been reviewed on MojoPages.com. They can be reached by calling (504) 362-8433 They accept American Express, Discover, Master Card, Visa. for payment.