Resurrecting an Old Thread
I just removed, repaired and reapplied my front bumper cover on my (new to me) 2006 Envoy Denali and thought I would share the differences I found between my Envoy and the Trail Blazer.
First of all, because of the way it was put together, I ended up tearing down the whole front end to get the bumper cover off.
First, remove the grille by squeezing the metal clips along the top with a pair of pliers and push them through the slots. Then lift the grille out of the slots on the bottom. Have a rubber plug handy to plug the headlight washer hose where it attaches to the grille; disconnect the hose and remove the grille.
Now, remove the head light assemblies by pulling the two slide locks up on each one. Make sure you get the slides all the way up… I fought one for quite a while because it slid up some, but not enough to release the headlight assembly. Disconnect the wiring and lights by turning the light sockets counter-clock-wise and remove the assemblies.
Next, remove the bulbs from the cornering lights (white turn lights) by turning the socket counter-clock-wise and then remove the lens assembly by releasing the clip and pulling it away from the inner wall of the bumper cover and then sliding it forward. Be careful! The edges of the plastic piece that goes all the way across the front end is razor sharp and will cut you. I used a flat file on mine and removed the sharp edges – after getting cut, of course.
Remove all the screws (and one big plastic snap in the middle/bottom) that hold that big plastic panel that covers the front of the Envoy and remove the panel. Don’t forget to disconnect the sensor and the wiper hose from the panel. Remove the electrical connectors from the fog/driving lights.
Climb underneath the Envoy and remove one screw on each side of the bumper cover that hold the plastic rods to the bumper. Also, while you’re under there, use a flat blade screwdriver to push the plastic clips out that hold the lower air inlet in place and remove it. Then, climb out from underneath and remove the four large plastic Christmas tree fasteners from inside the air inlet opening that fasten the bumper cover to the bottom of the bumper.
Lastly, pull the inner wheel well liner back and reach in behind the “Door Knob” (as everyone calls it) and release the lock that holds the bumper cover to the fenders. At the same time, carefully pull the bumper cover forward. Be very careful because as you pull the bumper cover forward, you can smash your finger that you’re holding the lock with.
Door Knob
Be careful not to break the plastic welds that hold the boxy plastic clip to the bumper cover. Do not pull out on bumper cover to release it as mentioned in previous posts. That may work on some models, but not on the Envoy Denali.
The reason I removed my bumper cover is because the plastic welds were already broke on mine before I bought it and the bumper cover was sticking out on that side. Below are some pictures of what I did to repair the broken plastic welds.
The good one, as it came from the factory.
The other side after the repair.
In the picture you can see the “lock” that needs to be pressed down in order to release the bumper cover from the fender. I used a soldering iron to melt (or weld) the plastic back to the bumper cover. If you use this method, remember to not hold the soldering iron in one spot for too long, or you can distort the exterior of the cover or damage the paint. It worked very well on mine and is probably stronger than when it was new.
