Hi,

I recently purchased a 2012 silverado crew cab z71 LT 4x4, the truck only has 45k miles on it and it is equipped with that active fuel management AFM. I don't know it sometime could be wrong with it but when I'm driving down the freeway I will have my cruise set on 70 to 75 and it's constantly switching back and forth. Please enlightened me about the AFM stuff because I'm very clueless, I want to make sure for 1 nothing is wrong or 2 I'm not doing something wrong.

Thanks,
Glenn.

 

Welcome to the forum. You will get more answers to your question if you post it in the Silverado section. I'm surprised you're going into the V4 mode at 75 miles an hour though.

 

Welcome! Greetings from Las Vegas!