Originally Posted by lilblue619
Where abouts are the connections? You wouldn't think a new truck would already have corrosion.
It depends on what the code is. That will tell you what area of the truck to look in. It's not the kind of corrosion you're thinking of. It's microscopic. It's a result of the connector moving around and the terminals moving around on eachother. Like when a battery sparks and leaves behind burn marks, but on a much smaller scale.
This is just speculation though, i don't even know what the code is. It's just a common issue in most part model GMs.
Another one is off you have any type of electrical device on the passenger seat. Cell phone, charger, ipod, etc...that can set a code too.