92 Grand Am 3.3l vin:1G2NE14N4NC209075 TRANS: AUTO COMPLAINT: HIGH IDLE NO CODES REPLACED: ALT , FOUND A/C LEAKAGE ECM: CUSTOMER INSTALLED 2 A-1 CARDONE, WE INSTALLED DELCO & UPDATED PROM UPDATED IAC VALVE TPS:.42 O2:VARYING CTS:OK POWERS & GROUNDS : OK REF VO... Login to read more.