2003 GMC Sierra Accessories

2003 GMC Sierra Trailer Hitch

2003 GMC Sierra Trailer Wiring

2003 GMC Sierra Brake Controller

2003 GMC Sierra Fifth Wheel Hitch

2003 GMC Sierra Gooseneck Hitch

2003 GMC Sierra Front Mount Hitch

2003 GMC Sierra Towing Mirrors

2003 GMC Sierra Base Plate for Tow Bar

2003 GMC Sierra Vehicle Tow Bar Brake System

2003 GMC Sierra Vehicle Tow Bar Wiring

2003 GMC Sierra Roof Rack

2003 GMC Sierra Tool Box

2003 GMC Sierra Ladder Rack

2003 GMC Sierra Tailgate

2003 GMC Sierra Truck Bed Extender

2003 GMC Sierra Vehicle Cargo Control

2003 GMC Sierra Headache Rack

2003 GMC Sierra Truck Bed Sliding Tray

2003 GMC Sierra Cold Air Intake

2003 GMC Sierra Air Filter

2003 GMC Sierra Exhaust

2003 GMC Sierra Suspension Enhancement

2003 GMC Sierra Transmission Cooler

2003 GMC Sierra Performance Chip

2003 GMC Sierra Interior Lights

2003 GMC Sierra Exterior Lights

2003 GMC Sierra Tire Chains

2003 GMC Sierra Throttle Body Spacer

2003 GMC Sierra Fluid Filters

2003 GMC Sierra Vehicle Sway Bars

2003 GMC Sierra Differential Cover

2003 GMC Sierra Vehicle Lightbars

2003 GMC Sierra Floor Mats

2003 GMC Sierra Tonneau Cover

2003 GMC Sierra Tube Steps

2003 GMC Sierra Trim Kits

2003 GMC Sierra Vehicle Covers

2003 GMC Sierra Grille

2003 GMC Sierra Grille Guard

2003 GMC Sierra Bug Shield

2003 GMC Sierra Side Window Vents

2003 GMC Sierra Truck Bed Mat

2003 GMC Sierra Bumpers

2003 GMC Sierra Mud Flaps

2003 GMC Sierra Lamp Guards

2003 GMC Sierra Truck Tailgate Lock

2003 GMC Sierra Truck Bed Rail Caps

2003 GMC Sierra Truck Bed Tailgate Lift

2003 GMC Sierra Vehicle Tent

2003 GMC Sierra Vehicle Seat Covers

2003 GMC Sierra Replacement Mirrors

2003 GMC Sierra Windshield Wiper Blades

Popular GMC Sierra Accessories

GMC Sierra Ball Mounts

GMC Sierra Weight Distribution

GMC Sierra Truck Bed Accessories

GMC Sierra Locks

GMC Sierra Bike Rack

GMC Sierra Vehicle Organizer

GMC Sierra Cargo Carriers

2003 GMC Sierra Videos

Thule Traverse Roof Rack Installation - 2003 GMC Sierra

Today we are going to review part number TH480 from Thule. This is Thules traverse foot pack. And we will also be using fit kit part number THKIT1522. And the cross bars we will be using on this demonstration will be THLB58. Those are sold separately. And we will be taking these parts and will be installing these on a 2003 GMC Sierra extended cab pickup truck. We have our parts here laid out with just one end of the bar so you will not get confused. We will flip the whole assembly over so you can see it easier. We are going to start off with our tower here. To slide it onto the bar, what we are going to have to do is loosen this clamp up. So we pull back on this latch right here. Then we can slide our bar in. We will just leave that loose for now. We are going to pop on our little cap. We are going to need to open up this door here. It just snaps open. And while we are here, we will use this tool to tighten down this screw which actually will clamp it down to the car. Then next we will go ahead and install the fit kit itself. 1:00

2003 GMC Sierra Questions and Answers

• Will the K-Source Custom Extendable Towing Mirrors Heat/Electric work on 2003 GMC Sierra w/o Heat
  
• Yes, the K-Source Custom Extendable Towing Mirrors w/ Turn Signals # KS62075-76G that you referenced will still install on your 2003 GMC Sierra that has electric mirrors without heat, but since your vehicle is not equipped for the heat function the mirrors would not heat. Basically these mirrors will function exactly like your factory mirrors.
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• Will the Universal Sidewinder Wedge Work on a Reese 5th Wheel Trailer Hitch
  
• In most cases, the universal wedge that comes with the Sidewinder will work. For a Reese 16k hitch like # RP30051, the universal wedge is all you will need. Keep in mind that the hitch will need to always remain locked in the towing position and never slid forward with the Sidewinder installed. Doing so would create problems with too much stress on the system, move the trailer weight too far behind the rear axle of the towing vehicle, and could interfere with the truck tailgate.
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• Replacement Drivers Side Mirror For 2003 GMC Sierra 2500
  
• We do have a drivers side mirror for your 2003 GMC Sierra, but the CIPA Replacement Mirror # CM27352 you referenced is not a compatible fit. The most recent GMC Sierra the # CM27352 will fit is the 2002 model. For your vehicle, I recommend the CIPA Replacement Mirror # CM27376, a direct replacement for your Sierras mirror OE # 15048182. The installation is pretty easy as it bolts to existing mounting holes using existing hardware and it comes with a 1-year warranty.
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• Diagnosing Malfunctioning Tekonsha Voyager Brake Controller on 2003 GMC Sierra
  
• It is pretty unlikely that the factory connection point under the dash where the controller plugs in has been pinned incorrectly. I would begin by checking under the hood to ensure that the final brake controller connections were made at the power distribution box on the inside of the drivers side fender. Depending on how the vehicle was equipped, in may cases this connection was not made on the assembly line. As you can see in the provided photo, look for a red wire with a ring terminal on
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• Parts Needed to Tow a 5th Wheel Trailer with a 2003 GMC Sierra 6-1/2 ft Bed
  
• Since you have a 6-1/2 foot bed you are going to need a sliding hitch like the Curt E5 5th Wheel Trailer Hitch w/ R16 Roller # 16516 that you referenced. For the correct installation kit to install this hitch in the bed of your 2003 GMC Sierra you will need a Curt Fifth Wheel Installation Kit # C16418-104. Now for wiring to allow you to install a trailer 7-way in the bed of your truck as well you would want a Draw-Tite Fifth Wheel and Gooseneck Wiring Harness # 20110. I attached an installati
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• Can a Fixed Pro Series 5th Wheel Trailer Hitch Change to a Slider for a 2003 GMC Sierra Short Bed
  
• Yes, you can change over your 15K Pro Series 5th wheel hitch from a fixed to a slider. You will need to use the Pro Series Fifth Wheel Slider w/ Rollers, # RP30092. I have linked a video and instructions for you. This slider will provide 10 inches of travel. To make sure the slider will provide enough clearance for you to safely make tight turns without hitting the trailer and truck cab together, there is a simple formula you can use. Measure from the center of the hitch jaws where the kin
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• Compatibility of TruXedo TonneauMate Truck Bed Toolbox with 2003 GMC Sierra 1500
  
• According to my contact at Truxedo, their TonneauMate toolbox, part # TX1117416 is indeed compatible with your 2003 GMC Sierra, unless you have a flareside, stepside or composite bed. If your truck has the GM Cargo Management System, which is the factory installed tracks along the top edge of the bed side, you will also need a clamp kit, part # TX1117458.
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• Towing Mirror with Maximum Extension for 2003 GMC Sierra 2500
  
• The Longview Towing Mirror, part # CTM1500 would extend just a bit more farther than the CIPA # 10801 and 10802 you are currently using. If you look at the provided photo I provided, you can see that the CIPA product extends 5-1/2 inches beyond the edge of the factory mirror while the Longview # CTM1500 extends by 5-1/8 inches. I do not believe the 3/8 inch larger extension offered by the Longview mirror would make much difference to you. Even a Custom Extendable Towing Mirror like part # KS6
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• Anderson Ultimate 5th wheel Connection Recommendation for a Flatbed with Recessed Ball
  
• Actually there is an Andersen Ultimate 5th Wheel Connection available specifically designed to be used on vehicles with flat beds that have a recessed ball like what you have. You would want a part # AM3235. This product comes with a 4 inch extension to reach your ball.
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• Firestone Air Spring Suspension for 2003 GMC Sierra 1500
  
• For your 2003 GMC Sierra 1500, the correct Firestone Air Helper Springs would be part # F2320. In order for the springs to fit your truck, the minimum allowable distance between the inside of the tire and the outside of the frame member is 6 inches. Other than drilling mounting holes in the frame members, not modifications are required. You can look at the installation instructions I have linked you to for more information. The # F2250 you referenced will fit the 2500 and 3500 series only, an
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• Tailgate Lift Assist System for a 2003 GMC Sierra 1500
  
• For a lift assist, you can use Hopkins EasyLift, # 74211 and it takes up 80 percent of the weight of the tailgate. I have linked a video review of this system for you. Or for a Tailgate lowering system for a 2003 GMC Sierra, you would need part # DZ43100. I have included a link to the installation instructions for you to view.
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• Tongue Weight Capacity when Using Titan Trailer Hitch Extension RP45292 with Weight Distribution
  
• A weight distribution system is used to more evenly distribute the weight of the trailer to all axles of the trailer and tow vehicle. When using the extension, # RP45292, the tongue weight capacity is going to depend on the length the extension is cut to. If it is cut down to 24 inches, the tongue weight capacity 600 pounds. At the 34 inch length the capacity is 450 pounds. It does not sound like you have a weight distribution if you are using the extension and a ball mount and are connected
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• Brake Controller Does Not Activate Trailer Brakes with Brake Pedal on 2003 GMC Sierra 3500
  
• There are indeed 2 different brake controller wiring harnesses used between the 2002 and 2003 GMC Sierra. A 2002 would use # 3025-P. The 2003, like you have, uses a # 3015-P. The difference between these 2 harnesses is the way they are pinned out. On # 3025-P the red wire is located next to the white ground wire, and below the black power wire. On # 3015-P the red wire is located next to the blue wire. You will not necessarily need a completely different harness if yours is pinned out
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• Can a Tonneau Cover be Installed on a 2003 GMC Sierra Short Bed with Over the Rail Bed Liner
  
• The Access Tonneau Cover, # A22020219, will not fit with an over the rail drop in bed liner. You would need to remove the portion that goes over the rail (making it and under the rail bed liner) to get a tonneau cover to fit. The best option for a 2003 GMC Sierra with a 6-1/2 foot bed is the Craftec cover, # 251929. You will just need to trim the over the rail bed liner where the unit clamps to the truck as opposed to trimming large portions of it.
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• Fifth Airborne Air Ride Coupler with Sidewinder for a Leland 7910 Pin Box
  
• Since you have a Leland 7910 pin box on your trailer, you can use the 5th Airborne with Sidewinder Premium Fifth Wheel Air-Ride Coupler, # ST400-5AS02, that you have referenced. This model is rated for 19,500 pounds. We also have a 16,000 pound model, # ST400-5AS16K. These units do not come with hardware for mounting. You will need to provide your own hardware. The old hardware should not be used. Make sure to use the same size as the old hardware and that it is grade 5. The units do come
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• Brake Controller Installation and Troubleshooting on a 2003 GMC Sierra 2500
  
• If you have a factory 7-Way trailer connector on your 2003 GMC Sierra 2500 you should be able to use a brake controller adapter, like # 3015-P for Tekonsha brake controllers, to plug your brake controller into the factory brake controller port on your vehicle. The factory port is located in a electrical junction box that is located on the drivers side, below the dash, to the left of the brake pedal. You might want to also check to make sure the blue wire (power wire for 7-Way) and the red wi
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• Will I Need to Drill Any Holes to Install a Roadmaster Base Plate Kit on a 2003 GMC Z71 Sierra 1500
  
• This would be the correct base plate kit for your vehicle. I checked the installation instructions for the Roadmaster XL Base Plate Kit # 199-5 and you will not need to drill any holes into the frame of your 2003 GMC Z71 1500 Sierra. You will utilize existing holes in the frame of your vehicle to install this product. The Stowmaster Tow Bar is designed to work with XL base plates and should work well for you application. I attached an FAQ article on flat towing that you might find informat
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• Transmission Cooler Recommendation for a 2003 GMC Sierra 4x4 1500
  
• I can tell you that the Derale Transmission Cooler Pan, # D14204, fits most 1982-1999 model 4L60Es transmissions. Some models may require a smaller transmission filter to get it to fit. It will not fit on all models. The overall depth of the pan is 3-5/8 inches and the distance to the the 5/8 inch diameter cooling tubes is 2-1/2 inches from the top of the pan. The exhaust has been determined to be a possible hindrance of installing this pan on models newer than 1999. If there were no componen
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• Folding Gooseneck Trailer Hitch with Install Kit # 8339-4434 Includes Everything for Installation
  
• The Fold Down Gooseneck Trailer Hitch with Installation Kit, # 8339-4434, comes with everything need to install it in the bed of your truck including all the hardware and underbed rails. I do recommend adding the Fold Down Gooseneck Hitch Installation Template, # 6425, to make installation go quicker and easier. I have included a link to the installation details for reference.
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• How To Install Safety Chain Attachment U-Bolts With Ranch Hitch Gooseneck to 5th Wheel Adapter
  
• Which U bolts you will need, depends on the manufacturer of your gooseneck hitch. If you have Curt Quick Goose 2 Gooseneck Hitch, you will need Safety-Chain U-Bolt Kit for Curt Quick Goose 2 Gooseneck Hitch, part # C113. If you have a Reese or Draw-Tite Remov-A-Ball Goosneck Hitch, you will need Replacement U-Bolt Safety Chain Kit for Remov-A-Ball Gooseneck Hitch, part # 6308. You could also install part # 6308 in your truck bed to use with other brand gooseneck hitches. You would need
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• Comparison of Gooseneck and 5th Wheel Hitch For 2003 GMC Sierra 2500 HD Diesel Truck
  
• Yes, there are fifth-wheel to gooseneck adapters and we do carry them. Gooseneck hitches are typically used to haul construction or agricultural trailers and fifth-wheel hitches are mainly used to haul campers. Gooseneck hitches are usually rated to haul 25,000 to 30,000 pounds, some fifth-wheel hitches are capable of doing the same, but other fifth-wheel hitches are rated lower. When towing, your towing setup is only as strong as the weakest towing component, whether it is your hitch, coupl
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• Brake Controller Wiring Adapter for 2003 GMC Sierra
  
• To install the Tekonsha Prodigy P2 Brake Controller # 90885 in your 2003 GMC Sierra 2500 series, you would use the Wiring Adapter, part # 3015-P. This adapter features a connector on each end, one side plugs in under the dash, the other end would plug into your Prodigy P2 brake controller, with no cutting or splicing required. The adapter would plug into the wiring block located behind the emergency brake pedal. The black cover on the junction box would be removed, and the adapter plugged in
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• E1 Error Code On Hopkins Trailer Brake Controller - Reliance, # 47285, on 2003 GMC Sierra
  
• If you press the manual button on the Hopkins Agility brake controller, # HM47295, and the trailer brakes work, then the problem is in the position of the red wire on the wiring harness under the dash. You might have a wrong brake controller wiring harness. The correct harness is the Universal Brake Control Wiring Adapter 2003 - 06 Chevrolet, GMC, Cadillac, # 20264. If you unplug the harness and check the wire locations on the connector, with the blue locking clip in the down position the
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• Can Transmitter on Peak Wireless Back-Up Camera # PK015737 Be Mounted Behind Tail Light Assembly
  
• The closer you can get the transmitter to the monitor, the better your reception will be and the less interference you will get. Wireless back up cameras operate at 2.4 GHz, which is a pretty common frequency. The closer the transmitter is to the monitor the more stable the picture. You might be able to mount it behind the tail light assembly, but I would try to get it in the cab. It is recommended to keep the transmitter out of the elements. The wire from the camera to the transmitter measur
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• Troubleshooting a Sticking Handle On a Reese 16k 5th Wheel Hitch
  
• The 16K Fifth Wheel Hitch by Reese, item # 30047, has a groove in the handle that a latch rotates into. If the latch is not rotated toward the rear of the truck then the handle will not move and hitching should not be possible. If the latch was not rotated and hitching was attempted then some of the handle parts could have been bent. During normal hitching you should not move the handle out. You should back the truck slowly into the trailer and allow the hitch to move the handle out. Once the tr
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• Troubleshooting Tail Lights and Weak Electric Brakes
  
• You will need to use a circuit tester , item # 3808 if you need one, to test the connector on the vehicle to be sure your taillight circuit is working. If not you may have a blown fuse on that circuit or a short somewhere between the taillights and the connector. If your vehicle checks out ok then you will need to check the wiring on the trailer with the circuit tester to see where the problem is. Be sure to check all ground connection points on the vehicle, trailer and trailer lights also. I
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• Left Brake Light and Turn Signal not Working on Trailer Towed by 2003 GMC Sierra
  
• I suspect that you have a blown fuse. The fuses that manage your towing circuits are located in the power distribution box located under the hood of your truck. The box sits on the inside fender on the drivers side. Your owners manual should be able to tell you which particular fuse to look for. Once you replace the fuse, you will need to determine why the fuse blew. Carefully examine your trailer connector for corrosion or damage. Check your left turn/ brake light wiring on the trailer,
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• 2003 GMC Pickup Not Charging a Battery Like it Should
  
• Check in the fuse box one of the threaded posts; there should be a red wire going to it. Check the top to see if there is a fuse for it. It may be missing or blown. The owners manual will tell you where to look. If it is not hooked up, the wire will be located either under the fuse box, or maybe taped to the side of a wire harness. If you have a factory tow pack chances are that it is missing a fuse. I have never seen a factory harness for the 12v system that was not there. It is probably discon
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• Fifth Wheel Hitch Positioning in 2003 GMC Sierra Short Bed
  
• The installation instructions for the standard 5th wheels hitches (by Hidden Hitch, Draw Tite and Reese) indicate that the front rail needs to be placed 47 1/2 inches from the lip or end of the truck bed (before the tailgate). These instructions for the 2003 GMC 2500HD short bed truck are available for your review on on line and are guidelines only. Actual installation is the responsibility of the installer and the owner. Always measure the truck and trailer before installing the hitch to be sur
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• Trailer Running Lights Not Working Behind a 2003 GMC Sierra
  
• The first thing to do is check the underhood power distribution box. This box contains the fuses that manage your towing circuits. Please refer to your vehicle owner manual for individual fuse location. If the fuses are OK, then you will have to narrow down the problem to the trailer or the tow vehicle. Use a circuit tester, like part # 40376, and check each pin on your trailer connector while the corresponding function is activated. When you test the pin that connects to the brown trailer wi
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