If you call Maguire's, they say their" trim detailer" product was designed specifically for the clading on GM vehicles(AKA ISUZU) like the Avalanche. Same plastic. Around here at least, Wallyworld was the only vendor. Now they dropped it so I get it from Maguire's. We use it in the detail bay... like 4 or 5 bucks a bottle, we get 6 at a time. Great s... Take your time,no streaks brings it back nicely.