Fuel Filler Cap - Interior Fuel Odors
90pontiac20Bulletin Number: 91-6-7
Reference Number: 036303
Publish Date: 9/90
Subject: FUEL FILLER CAP CROSS THREADING (REPLACE CAP)
Models
Affected: 1989-91 FIREBIRD MODELS
CONDITION: Comments of fuel odor and rear quarter panel: staining in the area of the fuel filler door may be received on 1989-91 Firebird models. This condition has occasionally been noted after the vehicles fuel tank has been over filled, but does not occur after every refilling.
CAUSE: Inadvertent cross threading of fuel filler cap may provide false indication (clicking/racheting sound) that cap has been properly installed. During proper installation, cap will rotate freely for at least 2 (two) complete revolutions prior to seal of cap contacting filler neck sealing surface, at which time additional rotation will generate clicking/racheting sound.
CORRECTION: Replace existing fuel filler cap with new cap, P/N 10164142. The lead and thread characteristics of the new cap have been modified to minimize potential for cross threading to occur.
Parts are currently available from GMSPO.
Labor Operation Number: L1020
Labor Time: .2 Hours