GM Service Manual Online
For 1990-2009 cars only

Clean bright metal parts regularly with water. Use Chrome Cleaner and Polish GM P/N 1050173, or the equivalent, on chrome or stainless steel trim, if necessary.

Use special care with aluminum trim. Do not use auto or chrome polish, steam, or caustic soap to clean aluminum. A coating of wax, rubbed to a high polish, is recommended for all bright metal parts.