This sounds weird, but along with those grounds, check the smaller ones for the ECU and everything else..... Two sit behind the headlights, one on each side... There is one up behind the glove box for the ECU, one on each side behind the front kick panels and one in the trunk on the right side just about behind the filler neck opening. Oh! There is a small one right near the trunk latch too. Almost forgot that one!!
If none of those things fix your electrical probs, you may have to delve into the harnesses (3) under the driver's seat area and redo ALL the factory splices!!
Cleaning the grounds solved a couple problems for me, but redoing all the splices I could locate fixed just about everything but the drivers retracting seatbelt!!
It takes a little time so set a Saturday aside!!
Lance