BUICK\CHEVROLET\GMC\SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. MALFUNCTION INDICATOR LIGHT MAY NOT ILLUMINATE FOR SECONDARY AIR INJECTION SYSTEM FAULTS. MODELS LUCERNE, TRAILBLAZER, ENVOY, AND ION. *PE
BUICK\CHEVROLET\GMC\SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. MALFUNCTION INDICATOR LIGHT MAY NOT ILLUMINATE FOR SECONDARY AIR INJECTION SYSTEM FAULTS. MODELS LUCERNE, TRAILBLAZER, ENVOY, AND ION. *PE