Interior lights — Courtesy lamps circuit, base GMC Sierra 2500
All systems — 48 systems
- Air conditioning 8
- Anti-lock brakes 6
- Anti-theft 2
- Body computer
- Body control modules
- Computer data lines 3
- Cruise control 5.3l
- Cruise control 6.0l 3
- Cruise control 6.0l bi-fuel
- Cruise control 6.0l cng
- Cruise control 6.0l vin u
- Defoggers 3
- Electronic power steering 3
- Electronic suspension
- Engine performance 5.3l 10
- Engine performance 6.0l 3
- Engine performance 6.0l bi-fuel
- Engine performance 6.0l cng
- Engine performance 6.0l vin u
- Exterior lights 4
- Ground distribution
- Headlights 2
- Horn
- Instrument cluster 2
- Interior lights 5
- Memory systems 4
- Power distribution
- Power distribution 6.0l cng
- Power distribution 6.0l vin u
- Power door locks 4
- Power mirrors 3
- Power seats 6
- Power windows 4
- Radio 11
- Shift interlock
- Shift interlocks
- Starting/charging 2
- Starting/charging 6.0l bi-fuel 2
- Starting/charging 6.0l cng 2
- Starting/charging 6.0l vin u 2
- Supplemental restraints 2
- Transmission 2
- Transmission 5.3l 3
- Transmission 6.0l 4
- Transmission 6.0l cng
- Transmission 6.0l vin u
- Warning systems 2
- Wiper/washer 3
