Chosen Solution
Lights not working ,and my security lock is staying on what could cause this issue
Hi NiccolleW, Replacing a heater core is a pretty labor intensive job and requires a lot of the vehicle electrical connections be disconnected. I would first check the interior fuse box to see if the fuses are good, 7 and 11 are for the turn signals. Next I would check and make sure that the turn signal and hazard lights are plugged in.
