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Full-On 2004 GMC 2500 Diesel Truck Buildup, Part 1 - Build It!
Gmc 2500 Full On Buildup Project Truck

Full-On 2004 GMC 2500 Diesel Truck Buildup, Part 1 - Build It!

Full-On Diesel Truck Buildup, Part 1
September, 2009
Author: Mark Barbee
Photography: Mark Barbee
0811 8L 02 Gmc 2500 Full On Buildup Project Truck
Finding a good truck to use... 
   
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0811 8L 02 Gmc 2500 Full On Buildup Project Truck
Finding a good truck to use as a project truck shouldn't be a nightmare. Simply use common sense and make sure everything adds up.
When you decide it's time to build up a diesel truck into something special, it's time to make a plan. You can do it one piece at a time over a long period, or you can slam your way through the process in as short a time as possible. Actually, there is one more possibility and it's the one we took with our newest GMC 2500 project.

0811 8L 03 Gmc 2500 Full On Buildup Gmc 2500 Rear
After installing a bunch of... 
   
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0811 8L 03 Gmc 2500 Full On Buildup Gmc 2500 Rear
After installing a bunch of cool parts, our project GMC was looking pretty darn good.
Was the truck used to tow? Does it have a hitch? Look at the wear of the hitch. Was the hitch installed properly, and does it have all the bolts installed? Does the truck have an electric brake booster? That can mean less wear and tear on your drivetrain and brakes.

0811 8L 05 Gmc 2500 Full On Buildup Bumpers And Lights
The bumpers and lights made... 
   
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0811 8L 05 Gmc 2500 Full On Buildup Bumpers And Lights
The bumpers and lights made a big difference in the way this truck looks.
If you still have worries, take the truck to a reliable mechanic. Tell him you are thinking of purchasing the truck and ask him his opinion. Many will not charge you because they want your future business. If you have to pay, a reasonable cost would be $50 to $100 to check the truck out. Lastly, think about a history check on the VIN number. Double-check the VIN number in at least two locations too.

Gmc 2500 Full On Buildup Bed Xtender Install
We started out with an Amp... 
   
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Gmc 2500 Full On Buildup Bed Xtender Install
We started out with an Amp Research Bed X-Tender. Tools needed included: Phillips screwdriver, Torx T-20 driver, drill, 9/64-inch drill bit, center punch, and the supplied template. This is a basic do-it-yourself job. There are advantages to using the Amp Research X-Tender-less wind drag with the tailgate open, additional square footage added to the bed when it is open, and when the tailgate is closed it holds items in a small area of the bed without sliding around. Once you have this installed, and have used it, you will wonder why all trucks don't have one. Also, the Amp Research X-Tender is very easy to remove if you have a large load. You will have to assemble both sides of the X-Tender. These directions are the same for both sides.
Gmc 2500 Full On Buildup Three Bent Tubes
We started by placing the... 
   
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Gmc 2500 Full On Buildup Three Bent Tubes
We started by placing the three bent tubes through the pivot upright. You have to make sure you use the correct tubes. There are two tubes with a pre-drilled hole and four tubes that are all the same. It is important to make sure the ends of the tubes extend approximately 3/8-inch past the pivot uprights.
Gmc 2500 Full On Buildup Strap Latch Assembly
Here we placed the strap latch... 
   
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Gmc 2500 Full On Buildup Strap Latch Assembly
Here we placed the strap latch assembly over the correct tube. Notice the placement of the pivot point on the pivot upright. One bumper upright was placed over the three tube ends and slid down. The placement was adjusted later, so there was no need to worry too much about it at this point. Next, the center upright was placed over the ends of the tube. This is where the center tubes later connected each side of the Amp Research X-Tender.
Gmc 2500 Full On Buildup Large Wedge And Screw
A large wedge and screw were... 
   
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Gmc 2500 Full On Buildup Large Wedge And Screw
A large wedge and screw were loosely positioned in the bumper upright. The adjustment was made later, so nothing was tightened at this point. We put the strap latch retainer over the strap latch. This protects the strap from wear and tear. The tube end caps were secured by firmly pressing them into the tube ends on the pivot upright side. We pressed hard with our palms.
Gmc 2500 Full On Buildup Three Center Tubes
The three center tubes were... 
   
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Gmc 2500 Full On Buildup Three Center Tubes
The three center tubes were positioned in the first half of the Amp Research X-Tender. We then repeated the previous steps to assemble the second half. Next, we put the second half on the other end of the center tubes. The two halves can be pressed together because the center tubes slide inside the bent tubes. Amp Research requires a three-inch overlap of the center tubes and bent tubes on both sides.
Gmc 2500 Full On Buildup Amp Research Xtender
The loosely fitted (but completely... 
   
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Gmc 2500 Full On Buildup Amp Research Xtender
The loosely fitted (but completely assembled) Amp Research X-Tender was moved to the open tailgate. The next step was to adjust the width to fit the width of the bed at the D-post. This determines the final width so the screws at the large wedges can be tightened. It's a good idea to make sure the bumper uprights are evenly spaced. The remaining screws and thru-hole wedges were then positioned at the center uprights and both pivot uprights. This will keep the tubes from sliding any further and makes the unit one solid piece.
Gmc 2500 Full On Buildup Amp Research Xtender
This last part of the install... 
   
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Gmc 2500 Full On Buildup Amp Research Xtender
This last part of the install was the tricky part. The kit came with two templates. After we maneuvered the final-assembled Amp Research X-Tender into position, we took notice of where the pivot points were on the pivot uprights. We cut out both templates and set each template on the D-post. This will reveal which template to use. Each template has a dotted line for bedliners. Our truck had a spray-in bedliner so we did not cut on the dotted line because the spray-in bedliner is not very thick. Only cut along the dotted line if you have a plastic bedliner. We taped the template in place and used a center punch to mark the three holes on the template. We drilled the holes using a 9/64-inch drill bit. We secured the mounting bracket to the D-post using three self-tapping Phillips head screws. Next, we repeated the steps on the opposite D-post.
Gmc 2500 Full On Buildup Mounting Brackets
We placed the Amp Research... 
   
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Gmc 2500 Full On Buildup Mounting Brackets
We placed the Amp Research X-Tender in the mounting brackets. With the tailgate open, we moved it to the open and closed position. We made sure the bumper uprights landed on a flat surface. Next, we returned the strap latch assembly to the tailgate and adjusted the length of the nylon straps. This will keep the X-Tender from bouncing. We double-checked to make sure everything was tight, and we were done.
Installation of a Racho Suspension Lift Kit and the addition of a set of Toyo Tires on our project GMC.
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