Had a few questions about some codes inside the Avalanche that I am fixing. Maybe someone here may be able to help... DCP - PROCESSING DIRECTIONS & CONNECTIONS SERVICE PACKAGE Is this Navigation or something? JL4 - CONTROL ACTIVE BRAKE Is this trailer braking? R7E - What is this? R9N - What is this? SLM - What is this? UE1 - COMMUNICATION SYSTEM VEHICLE, G.P.S. 1 Is this part of DCP? Navigation? 6TK - COMPONENT-COMPUTER SELECTED SUSPENSION Autoride or something? 7TK - COMPONENT-COMPUTER SELECTED SUSPENSION Autoride or something? Thanks for y'alls help!