Owner's Manual
Page 360
... BATT FEED HORN ** Usage Battery Voltage to ECM, TCM, PCM (3.5L V6 (L66)) Instrument Panel Fuse Box Horn Emissions Body Control Module, OnStar® Door Locks Usage 5-96 Fuses PARK Usage Park Lamps, ... Not Used HVAC Control Head Parking Lamps All Door Lock Switch Passenger Door Unlock Switch Driver Door Unlock Switch Headlamps The underhood fuse block is located in the forward part of the engine compartment near the battery.
... BATT FEED HORN ** Usage Battery Voltage to ECM, TCM, PCM (3.5L V6 (L66)) Instrument Panel Fuse Box Horn Emissions Body Control Module, OnStar® Door Locks Usage 5-96 Fuses PARK Usage Park Lamps, ... Not Used HVAC Control Head Parking Lamps All Door Lock Switch Passenger Door Unlock Switch Driver Door Unlock Switch Headlamps The underhood fuse block is located in the forward part of the engine compartment near the battery.