This is an original GM used ECM Control Module that fits TPI Tuned Port injection 5.0 &  5.7  V-8 1990-1992 Camaros and Firebirds  and may fit other GM cars check your application before purchasing.  This item is in good useable shape and was tested before it was listed.Thanks for looking!! Buyer to pay $18.00 for shipping in the U.S.  Serv. 01227730   (DOES NOT COME WITH PROM)