The 1998 GMC signal flasher relay switch will be behind the
drivers side dashboard. The signal flasher relay switch will be on
the left-hand side of the gas pedal.
What would cause turn signal flasher to keep clicking even if no turn signal is not turned on. on a 99 gmc jimmy?
The cause for a turn signal flasher to keep clicking on a 1999
GMC Jimmy is a bad flasher unit. Replacing this with a new flasher
unit should solve this problem.