So this post is to help out my sis, she has a 08' silverado. Last night when she.was leaving her truck was acting up. The stereo read 12:00 and no stations were programmed, and her.AC setting were.reset also. Also i drove the truck down the.street and everytime i gunned it she just wasnt pulling, she took a while to take.off. And the idle.was bad, for a minute it felt like if it was going to die. I checked the battery and it read good, not sure what else it can be. Any input is appreciated, thanks!

 

Did you use a load tester or a volt meter?