This bulletin applies to 2019-2022 Chevy Blazer vehicles. The fuel door may not open. The fuel door tappet may have fallen out of the hinge.
This condition may be caused by the tappet becoming detached, making the tappet loose in the housing hinge, misaligning the tappet to the lock actuator or the tappet is no longer retained to the hinge (missing tappet). The misalignment of the tappet to the lock actuator could cause the fuel door to not operate correctly and in some cases damage the lock actuator or lock actuator mount.
A missing tappet boot may also cause the tappet to become detached to the hinge. If the tappet or boot is missing, replace the tappet. Replace the fuel door if it is damaged. The new fuel door will include the tappet. If needed, remove the tappet by turning it clockwise ¼ turn and discard.
Align the new tappet base tabs to the hinge opening and turn counter-clockwise ¼ turn. The new tappet should not have any movement in any direction.
