"to clean or not to clean"

Any stories out there bout cleaning my headliner,good or bad. I smoked cigs for the first year I had my truck. in fact i lit my first cig with the toyota provided lighter before i was out of the dealer parking lot. But now I am considering cleaning my headliner. I know back in the day, you dont touch it unless you like it falling down on you. any body cleaned one that hasnt fallen?

 

I used to detail smoker's cars. I'd pull the headliner out, spray it with a hose and use powdered laundry detergent and a firm bristle brush. Then let it dry in the sun befor reinstalling it. I've done dozens of cars this way and never had a problem with any of them sagging. The headliner is only part of your problem if you are trying to get smell out.