1995 T-100 ext cab...3.4 L ...A/T...165K miles...
Running good...MPG seems OK...
Maintenance has been good...

However, about a month ago the seatbelt/airbag warning light started staying on...
Then two days ago, the engine warning light started staying on...
Checked all fluid levels...OK
And the engine is running fine...
Is this a sensor going bad...or an electrical problem?

I love my 'lil T-100...and wanna get some more good miles outta her...
Any help would be much appreciated...

Thanks in advance....