Silverado Classic 1500 4WD V8-4.8L (2007)
Circuit #742 for Auxiliary Power at the 7-way trailer connector is no longer connected by the GM Assembly Plant. If the customer desires auxiliary
power at the trailer connector location (i.e. refrigeration, battery charger or interior light in the trailer), complete the following steps to connect circuit
#742:
1. Locate the red/black wire, looped and taped to the chassis harness, below the brake master cylinder.
2. Break the tape and route the wire to the front of the underhood electrical center.
Important
Ensure that the ringlets are not interfering with the UBEC cover.
3. Place the terminal on the smaller of the two studs on the electrical center and secure with an M6 fastener. This is circuit #742 to stud #1 for
auxiliary power to the 7-way trailer connector.
4. ONLY for vehicles without RPO TP2 - Auxiliary Battery, install a 40 amp fuse to power the circuit.
Important
For vehicles equipped with RPO TP2 - Devices powered by this fuse will drain the vehicle battery if left connected with the vehicle not running.
Warranty Information
This installation procedure is to be performed at the customer's request and at their expense. It is not a warranty repair and a claim should not be
submitted for reimbursement.
Disclaimer
