There are 15 choices

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Air Bag
- (below left hand front seat)
  - Crew Cab
    - 1500 HD
    - Excluding 1500 HD
  - Extended Cab (4 door)
    - hybrid option (opt HP2)
    - Without hybrid option
  - Regular Cab
    - passenger side seat sensor (opt AL0)
    - Without passenger side seat sensor
Body Control (BCM)
- (under steering column)
  - Crew Cab
  - Excluding Crew Cab
Communication
- telematics (OnStar, opt UE1)
  - (Passenger Side dash)
Cruise Control
- (left hand firewall)
  - (4.3L)
Hybrid-Electric
- battery control
  - (under back seat)
Memory
- (under Driver Side seat)
  - front passenger and child presence detector (opt AL0)
  - Without front passenger and child presence detector
Steering
- (Quadrasteer, opt NYS)
  - (left hand rear frame)
Transfer Case
- (left hand dash)

Chassis Computer for 2005 GMC Sierra 1500 HD

Fits: Body Control BCM under steering column Excluding Crew Cab (change)

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