Electrical issues

[Etatheta]

I have an 07 grand prix base model the last 2 weeks its been doing some odd things

the blower will kill for a second and turn back on
dash lights will flicker/dim
air bag light will randomly flash
rear defroster seems to stop functioning even if the switch still indicated its on
this morning when i turned off my rear defroster it also killed my cruise control and the air bag light flashed on which also killed my cruise control
then the biggest issue is when i turned my engine off 2 days ago everything in the car killed instantly which normally the radio should stay on until i open my door. Well when i get back in my car 2.5 hours later the clock had only progressed about 15 minutes, and not the 2.5 hours it should have this only happened the one time.

The car runs perfectly fine its just these electrical gremlins

I've been doing some digging and everything i have found says to replace my HVAC fuse and my ignition switch/harness as its a common issue with grand prixs' However i can only find this advice on 03's and older. I just want to make sure before i replace them that im on the right track, and thats its safe to drive the car.

any advice would be very helpful

Thanks
Dan

[SlowNA06]

Um. Sounds like you have a bad ground to me. Check and clean up your ground wires.

[Etatheta]

see i was thinking the same until i found 5 different forums with different with similar issues all who found no grounding issues, and the solutions for almost all of them was the ignition switch/harness and 2 of them who had blower issues also replaced the hvac fuse. Not that im disagreeing, i'll definitely check my grounds.

[SlowNA06]

Well, shoot. I've never had the problem. Those folks could be right. At least checking the ground doesn't cost money.

[thomp_2]

Where are all the other grounds located?