CADILLAC\PONTIAC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE SECONDARY AIR INJECTION (SAI) SYSTEM MAY HAVE BEEN DISABLED AS THE RESULT OF A PREVIOUS SERVICE PROCEDURE THAT INCLUDED POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING OR REPLACEMENT. ONLY VEHICLES EQUIPPED WITH 4.6L V8 (RPO LD8, L37 ENGINE. CSC LETTER WAS RECEIVED. *PE
