Dorman 259-200 Cabin Air Filter Retrofit Kit Compatible with Select Cadillac / Chevrolet / GMC Models

Just installed the retrofit kit in our 2013 Silverado 1500 Ext Cab. Thankful for all the comments offering tips! Here's how I completed the task in under 30 minutes.Steps: Slide the passenger seat as far back as possible and remove mats. Set up a utility light with a built-in three prong 110 vac outlet on the work area floor. Set up a large folded towel or chair pad for kneeling on cement floor. You'll be kneeling on the floor outside the truck and laying on your left side into the passenger side floor. It's a little awkward but doable. Remove the lower cowling cover using a 6mm deep socket with a 1/4" ratchet. It was easier for me to get the two screws on the passenger side first, then move to the driver side to loosen the other two.Safety glasses on. Plug my Dremel tool with drill bit attachment into 110 vac utility light outlet. Use Dremel and drill out the top two accessible plastic corners between the ridge. Change out the Dremel drill attachment for the small circular saw Dremel attachment. Cut into the small leading edge groove connecting with each hole. Next, and while cutting in the grove, use the circular saw Dremel and cut a 2 inch grove from the right top hole moving in the groove toward the back until you are limited by the plug cluster. Do the same cut job on the left side groove for about two inches. Use the circular saw Dremel to cut a grove in the back small groove. At this point, the top small groove is complete. You have two, 2 inch grooves cut on each long side connecting up with the holes you drilled. And you have cut the back groove with no holes drilled (couldn't get those with the drill bit). Using a small hack saw blade holder, with the blade teeth facing down, allowing you to cut on the pull stroke, run the blade down the long grooves beginning were the earlier cuts ended. With a utility knife, clean out the back corner where the plastic is still attached. The cover cut out should now drop out. I used compressed air and a vacuum in tandem to blow out the exchanger grate of dirt and dust. Clean up burrs with 100 grit sand paper. Install filter, retro fit cover and screw. Vacuum up all debris. Reinstall cowling and screws. Everything fits like a charm!

I had to cut out the plastic and install this because my truck doesn't have a filter. I read the reviews and was a bit worried about the install but it was much more simple than the other reviewers made it out to be. I just used a utility knife with a new sharp blade and it came out clean and easy with about 4-5 hard strokes. The filter slides right in and no tearing. Keeps the air nice and filtered.

Car dealers kept telling me my 2007 Chevy 2500HD didn't have one. This supplier listed one so I got it. You must remove a plastic trim piece under glove box to get access to the duct work. Instructions said to cut around molded plastic. This was not an easy task as plastic was very thick and your working upside down. Cut my hands a little so wear some good gloves. I ended up breaking off several pieces as I went along, as I was unable to get it out in one piece. Trimmed opening with file and Dremmel grinder to assure filter could get inside. Not as much leaves etc in opening like YouTube shows. Had to bend the filter to get it into housing as space was limited on my truck. Other vehicles might have more room. Hooked the cover on housing and installed screw provided. GM could have left the opening in housing and installed cover without filter, but they went the cheap route. Dealers could have gotten more business. I'm guessing multiple dealers told me I didn't have one as they knew there was no opening for filter!Filter and instructions were pretty good.

This is a GREAT kit to retrofit a Cabin Filter to a 2004 Silverado.The cutout area is reasonably obvious. Cut up, not on the sides. Cutting the back (toward the rear of your vehicle) line and both sides, the panel can be flexed down to break it at the front.Directions come with kit, I've included a couple images of my install.Looking up at the evaporator after the panel was cut out, I found my evap had accumulated crud over 17 years use.Using a long toothbrush, I combed as much as possible. Plan B was using a foaming commercial A.C. evap cleaner spraying straight into the dash vents.Foam expanded dropping down the vent pipes to the evap, through the coils and dripped out the cut opening into a catch tray. Other remaining came out the evap case drain hose on the ground.The filter has to be curved to install and has reliefs moulded in to allow it to curve on install.I found it required a small knife to clean up some edge plastic spurs for a smooth fit.This is a snug fit filter. The cover holds it tight with no leaks.Use care, be safe. Cutting tools are necessary and something too long could puncture the evaporator and mess up your day.

The air filter kit arrived on time and as advertised. It took me a few minutes to determine the proper tool to remove the blank plate in the fan unit (you tube was helpful), but once I had it out, the filter slid into the unit as designed and the included cover panel fit perfectly. No issues.