K 3500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
Body Control Module: Initial Inspection and Diagnostic Overview
A Diagnostic System Check - Body Control Module (BCM)
DTC 12 Diagnostic System Check
DTC 12 Diagnostic System Check
CIRCUIT DESCRIPTION
Voltage is supplied to the security LED indicator lamp on the console from the Body Control Module (BCM) thru the following areas: