I recently purchased an 02 Tahoe LS 4wd and drove it for the first time after dark last night. I noticed immediately that my headlight indicator light for my brights on the dash are not working. Also, the other warning lights on the left side of the dash do not light up upon start up (ie Service Engine soon, ABS, 4WD). I checked a couple fuses I thought it might be but no luck. Any idea what could cause this? Also, the trip meter resets itself everytime I turn the vehicle off. Im not an electrical guy, looking for any possible causes.