One problem related to turn signal flasher unit has been reported for the 2003 Oldsmobile Alero. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Oldsmobile Alero based on all problems reported for the 2003 Alero.
My lower intake manifold is leaking just as is popular on these types of engines. Also my turn signal is working off and on. I have sent letters to gm with no response or success.