2007 Chevrolet Avalanche Owner's Manual - Page 436

Electric Brake Control Wiring Provisions These wiring provisions are included with your vehicle as part of the heavy-duty trailer wiring package. These provisions are for an electric brake controller. The instrument panel contains blunt cut wires near the data link connector for the trailer brake controller. The harness contains the following wires: • Dark Blue: Auxiliary • Red/Black: Battery # • Light Blue: Brake Switch Trailer Recommendations You must subtract your hitch loads from the Cargo Weight Rating (CWR). CWR is the maximum weight of the load your vehicle can carry. It doesn't include the weight of the people inside, but you can figure about 150 lbs. (68 kg) for each seat. The total cargo load must not be more than your vehicles CWR. Weigh your vehicle with your trailer attached, so that you won't go over the GVWR or GAWR. If you are using a weight-distributing hitch, weigh the vehicle without the spring bars in place. You'll get the best performance if you spread out the weight of your load the right way, and if you choose the correct hitch and trailer brakes. For more information see Towing a Trailer on page 421. • White: Ground The trailer brake controller should be installed by your dealer or a qualified service center. 436