Sierra 1500 2WD V8-5.3L Hybrid (2004)
Relay Box: Service and Repair
Underhood Electrical Center or Junction Block Replacement
UNDERHOOD ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Remove the left fender upper brace.
3. Remove the electrical center brace cover assemble by lifting the cover (3) outwards to clear the tabs.
4. Remove all fuses and relays.
