Workshop Repair and Service Manuals GMC SIERRA
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Towing Accessories

Four-Wheel Drive      Transfer Case When to Check Lubricant Refer toMaintenance Scheduleto determine when to check the lubricant. How to Check Lubricant Electric Shift Transfer Case Fill PlugDrain PlugManual Shift Transfer Case Fill...
PIT4366F Check Trailer Wiring Message Displayed On DIC - (Aug 24 2012) - part 2      1.4  Install and fasten the other end of the new ground wire into the trailer sideof the 7-pin trailer connector 1.5  Install conduit on the original and new trailer ground wires and secure the conduitto the existing trailer...
PIT4366F Check Trailer Wiring Message Displayed On DIC - (Aug 24 2012)      Subject: Check Trailer Wiring Message Displayed On DIC Models:  2009 - 2013 Chevrolet Avalanche, Suburban, Tahoe 2007 - 2013 Chevrolet Silverado 2007 - 2013 GMC Sierra 2009 - 2013 GMC Sierra Denali,...
PIT4900B Service Trailer Brake Message With DTC(s) C1115 C1116 C1117 And Or C1118 (Inspect Wiring Near Park Brake Pedal) - (Aug 28 2012)      Subject: Service Trailer Brake Message With DTC(s) C1115 C1116 C1117 And/Or C1118 (InspectWiring Near Park Brake Pedal) Models:  2009 - 2013 Chevrolet Avalanche, Suburban, Tahoe 2007 - 2013 Chevrolet Silverado...
Recreational Vehicle Towing - part 2      See“Rear Towing (Rear Wheels Off the Ground)”later in this section for more information. Front Towing (Front Wheels Off the Ground) –Four-Wheel-Drive Vehicles Use the following procedure to dolly tow a...
Recreational Vehicle Towing      Recreational vehicle towing means towing the vehicle behindanother vehicle, such as a motor home. The two most common types ofrecreational vehicle towing are known as dinghy towing and dollytowing. Dinghy towing is towing the...
Recreational Vehicle Towing - part 2      Use the following procedure to dolly tow a four-wheel drivevehicle from the front: Attach the dolly to the tow vehicle following the dollymanufacturer's instructions.Drive the front wheels onto the dolly.Shift the transmission...
Recreational Vehicle Towing      Recreational vehicle towing means towing the vehicle behindanother vehicle – such as behind a motorhome. The twomost common types of recreational vehicle towing are known asdinghy towing and dolly towing. Dinghy towing is...
Towing Equipment - part 7      This message will also turn off if the driver acknowledgesthis message or if the trailer harness is re-connected. If the disconnect occurs while the vehicle is moving, this message will continue untilthe ignition is turned...
Towing Equipment - part 6      If the vehicle’s service brakes are applied while using the Manual TrailerBrake Apply Lever, the trailer output power will be the greater of the two. The trailer's and the vehicle's brake lamps will come on when either vehicle...
Towing Equipment - part 5      The Trailer Brake Display Page can be displayed by performing any of the followingactions: Scrolling through the DIC menu pages using the odometer trip stem or the DIC VehicleInformation button (if equipped).Pressing a Trailer...
Towing Equipment - part 4      However, there is no benefit to the selection of Tow/Haul when thevehicle is unloaded. Such a selection when unloaded may result in unpleasant engineand transmission driving characteristics and reduced fuel economy. Tow/Haul is...
Towing Equipment - part 3      If the vehicle does not have an auxiliarybattery, haveyour dealer or authorized service center install the required fuse. If charging a remote (non-vehicle) battery, press the Tow/Haul Mode button, if equipped,located at the...
Towing Equipment - part 2      Do not use the pickupbox for support. Safety Chains Always attach chains between the vehicle and the trailer. Cross the safety chainsunder the tongue of the trailer to help prevent the tongue from contacting the roadif it...
Towing Equipment      Hitches The correct hitch equipment helps maintain combination control. Many trailers canbe towed with a weight-carrying hitch which simply features a coupler latched to thehitch ball, or a tow eye latched to a pintle hook....
Trailer Brake Control Relay Replacement (1500)      Removal ProcedureTurn the ignition switch to the OFF position. Note:Do not remove the spare tire and wheel hoist. Remove the spare tire and wheel assembly. Refer toSpare Wheel Hoist Replacement. .1 Disconnect the trailer...
Trailer Brake Control Switch Replacement      Trailer Brake Control Switch Replacement Callout Component Name Preliminary Procedure Remove the knee bolster. Refer toKnee Bolster Replacement 1 Trailer Brake Control Switch ProcedureDisconnect the...
Trailer Brake Power Control Module Replacement (2500 3500 Pickup)      Removal ProcedurePlace the ignition switch in the OFF position. Note:Do not remove the spare wheel hoist. Remove the spare tire and wheel assembly. Refer toSpare Wheel Hoist Replacement. Disconnect the trailer brake control...
Trailer Brake Power Control Module Replacement (1500)      Removal ProcedureRaise and support the vehicle. Refer toLifting and Jacking the Vehicle. Note:The trailer brake control module is integral to the fuel pumpflow control module. Remove the fuel pump flow control...
Trailer Towing - part 2      p>Ask your dealer for trailering information or advice. Weight of the Trailer Tongue The tongue load-(A) of any trailer is very important because it is also part of thevehicle weight. The Gross Vehicle Weight-(GVW) includes the...
Trailer Towing      If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. If the vehicle is bi-fuel, see the bi-fuel supplement...
Trailer Towing - part 2      Choose the shortest hitch extension that will position thehitch ball closest to the vehicle. This will help reduce the effectof trailer tongue weight on the rear axle. Trailering may be limited by the vehicle's ability to...
Trailer Towing      Do not tow a trailer during break-in. SeeNew Vehicle Break-Infor moreinformation. Warning:The driver can lose control when pulling a trailer if thecorrect equipment is not used or the vehicle is not drivenproperly. For...
Vehicle Load Limits - part 3      See“Loading Your Vehicle for Off-Road Driving“ underOff-Road Driving. Two-Tiered Loading Depending on the model of your pick-up, an upper load platform can be created by positioningthree or four 5-cm (2-inches) by 15-cm...