Radio — Radio circuits, up level with onstar GMC Sierra 1500 HD
All systems — 71 systems
- Air conditioning 8
- Anti-lock brakes 7
- Anti-theft 2
- Body computer
- Body control modules
- Computer data lines 4
- Cooling fan 3
- Cruise control
- Cruise control 4.3l 2
- Cruise control 4.3l vin x
- Cruise control 4.8l 2
- Cruise control 4.8l vin v
- Cruise control 5.3l 2
- Cruise control 5.3l vin b
- Cruise control 5.3l vin t
- Cruise control 5.3l vin z
- Cruise control 6.0l 2
- Cruise control 6.0l vin n
- Cruise control 6.0l vin u
- Defoggers 3
- Electronic power steering 2
- Electronic suspension
- Engine performance 4.3l 2
- Engine performance 4.3l vin x
- Engine performance 4.8l 2
- Engine performance 4.8l vin v 2
- Engine performance 5.3l 2
- Engine performance 5.3l vin b
- Engine performance 5.3l vin t 3
- Engine performance 5.3l vin z 2
- Engine performance 6.0l vin n 2
- Engine performance 6.0l vin u
- Exterior lights 3
- Ground distribution 3
- Headlights 2
- Horn
- Instrument cluster 2
- Interior lights 4
- Memory systems 4
- Power distribution
- Power distribution 4.3l vin x 2
- Power distribution 4.8l vin v 2
- Power distribution 5.3l vin b
- Power distribution 5.3l vin t 3
- Power distribution 5.3l vin z 2
- Power distribution 6.0l vin n 2
- Power distribution 6.0l vin u
- Power door locks 4
- Power mirrors 3
- Power seats 8
- Power top/sunroof
- Power windows 2
- Radio 10
- Shift interlock
- Shift interlocks
- Starting/charging 6
- Supplemental restraints 2
- Transmission 3
- Transmission 4.3l 3
- Transmission 4.3l vin x
- Transmission 4.8l 2
- Transmission 4.8l vin v 2
- Transmission 5.3l 2
- Transmission 5.3l vin b
- Transmission 5.3l vin t 3
- Transmission 5.3l vin z 2
- Transmission 6.0l 2
- Transmission 6.0l vin n 2
- Transmission 6.0l vin u 2
- Warning systems 4
- Wiper/washer 3
