System: fuel; fuel tank assembly.vehicle description: passenger vans equipped with L35 engines.note: if your vehicle IS presented to an authorized dealer on an agreed upon service date and the remedy IS not provided free of charge within a reasonable time or the remedy does not correct the defect, please contact chevrolet truck at 1-800-222-1020, or GMC at 1-810-456-4547. Also, contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.