GMC VSL 4000 Installation Manual page 17

type B: negative-triggered, relay-driven system
IMPORTANT! The H2/A and H2/B wires are not required for wiring the door locks. For detailed
wiring instructions for these two wires, refer to the beginning of the Door Lock Harness (H2) Wire
Connection Guide section. Depending on the type of door lock system, there may be additional H2
harness wires that are not used for wiring the door locks.
17 - English
NVSL4000