You can check out the instructions on the website: Your Mechanic. Just type in "How to Clean the Interior Roof of a Car" in the search box.
Remove the headliner board, clean it and replace the headliner material. There is a online guide at this page http://www.wlsheadliners.com/tutorials/s10sonoma/
the headliner or roof
Shorty's Automotive is in Portland. They do a lot of interior work and will gladly replace your headliner for you.
In order to remove the headliner, your have to remove the seats or it will not fit out of the car.
The part is called a headliner, the material is usually cloth glue to a foam/composite board.
Removing the headliner board from a 96 Nissan Sentra is not too complicated - 1st you remove the visors, hangers and anything else that attaches through the headliner and then you remove the headliner plastic trim. The board should fall free so it can be removed from the car through the front passenger door.
Istalling a headliner is not that difficult. First, remove everything that is bolted or screwed to the existing headliner, e.g., sun visors, luggage bar supports, etc. Next, remove anything that is bolted or screwed to the trim pieces that contact the headliner, e.g., shoulder strap supports. Next, firmly pull the trim pieces from the sides, rear and front. Next, pull the headliner down from the rear and slide it out through the tail gate. After that go to the fabric store and purchase foam backed headliner material and about two cans of headliner adhesive. Remove the material from the old headliner and clean the residual off with a putty scraper or stiff brush. After the headliner is clean and dry, spray it with headliner adhesive. Let dry until tacky. Next, spray the foam side of the headliner material with adhesive. When tacky apply the headliner material to the headliner shell. Work in sections and be careful to stretch and smooth the material as you go. Fold material over the ends as possible. Finally trim off the excess and cut the necessary holes for the sunroof, if so equipped, screws for the sun visors, etc. Installation is the reverse of removal.
The trim around the headliner needs to be removed. The trim holds the headliner up. Be careful during removal not to break the headliner backer.
How do you install a headliner in a volkswagen bettle?
How do we remove leak stains from headliner?
My wife, who knows nothing about cars, says it is in the center of the headliner inside the car.
The old headliner and glue has to be removed from the headliner backer. New headliner material is then glued to the backer. The backer may need to be removed from the van to replace the liner.