99-02 GMC Sierra Truck & 2000-05 Yukon & Yukon XL Air Dam Installation Instructions CK580-S/CK580-T
REMOVING FACTORYAIR DAM
1. To remove factory Air Dam, use a 6” long flat blade screwdriver. The rivets are accessed through the bottom of the bumper behind the factory Air Dam.
2. It will be necessary to remove the factory driving lights by removing the two bolts that hold the plastic light brackets to the bumper. Also remove the nut clips from the bumper.
3. Insert the screwdriver blade into the rivet head slots and twist screwdriver to force rivet inserts downward. Once rivet inserts are 1/4” to 1/2” down, grab with fingers or pliers and pull down, completely removing inserts.
4. After all rivets and lights are removed, use the screwdriver from the front side of Air Dam and pry down on the Air Dam to remove it from the bumper.
5. Next remove the plastic rivet clips from the bottom of the bumper by squeezing the clips and pulling down.
YOU MUST REMOVE TOW HOOKS TO MOUNTAIR DAM
1. To remove the tow hooks, remove the 4 - 15mm hex head bolts that hold the bumper to the frame brackets; two are at the outside of the bumper bottom with the bolt heads facing down and shaft threading up; the other two are on the inside of the frame rails with the bolt head facing up and the shaft threading down into a hex head frame clip 2. Using an 18mm wrench or socket, remove the 4 - 18mm hex head bolts that screw upward into each tow hook.
3. Using an 18mm wrench and socket, remove the nut from the long bolt that goes through the frame and tow hook from side to side.
4. Due to the bumper design, the long bolt head will hit the bumper when being removed. Slide the tow hook bolt outward until the bolt head contacts the bumper curve.
IMPORTANT: SLIDE THE WASHER THAT IS ON THE BOLT BACK TOWARD THE FRAME.
5. Then using a large screwdriver or medium size pry bar, stick the end of the prying device into one of the square holes closest to the bottom of the bumper curve. Pry the bumper outward just enough so that the bolt head will clear the edge of the bumper - then remove the bolt. BE CAREFUL NOT TO BEND THE BOTTOM FLANGE OF THE BUMPER.
6. Once the tow hooks are removed, replace the 15mm bolts and proceed with Air Dam installation.
Get pdf 99-02 GMC Sierra Truck & 2000-05 Yukon & Yukon XL Air Dam Installation Instructions CK580-S/CK580-T
