Owners of some 2004-06 Cadillac XLRs (fig. 11) may comment that the interior of the vehicle is turning pink. The concern may be seen on door panels, the driver’s knee bolster and passenger’s glove box. The concern is mostly apparent on vehicles equipped with the Shale interior (RPO 15I). The condition is linked to vehicles that are stored in the winter months in a warehouse that uses propane fork lift (hi-lo) vehicles. The dye of the interior reacts to high concentrations of combustion by-products and turns to a pink tint.
Most of the pink discoloration can be removed by using a 50-50 mixture of isopropyl alcohol and water. Exposure to natural sunlight for 2-3 hours will completely remove the pink coloration.