Hi everyone,

I was having bad problems with KR (which I still have....) so I decided to switch over to 2002 OS. It's a 2000 Sierra with an LQ9, heads, and that's it. Stock 4l60e trans.

Basically I took a 2002 LQ4/4l80e tune from holden crazy and did a trans segment swap with a 2002 5.3 4l60e. I then swapped over manually all my trans settings. All settings on the engine side are the bone stock LQ4 stuff. It's soggy as hell, but that isn't the concern. The truck drove fine but when I start it I get a change engine oil (I'm assuming I just need to do the reset here or something on the oil life) in my message center followed by the constant flashing battery sign. I get code P1638 also. Voltage was good on the drive, around 14. Any thoughts? Thanks


***sorry guys, just found out with a quick search I need to disable P1638! Mods you can delete this post. Guess I should have searched FIRST!