Quote Originally Posted by More Power View Post
Welcome to the board! Your input is appreciated. The code P0087 is an emerging problem for the LBZ/LMM. Jim
Its been quite the issue here in Montana. Lots of guys pulling a lot of weight. I have two more coming in later this week for the same issue. I wish we could just reprogram these things and change the tolerances-no can do.

We recommend fuel filters every year or every 15,000 miles. That sure seems to help with many of the fuel issues on these trucks. I have seen collapsed fuel lines ONE time.

I'd recommend starting with the filter, and then spraying off that cooler. Though come to think of it, I have a gentleman that has a Duramax that we actually pulled/measured fuel return and it was high on 3/4 injectors on one side. That pretty much confirmed the issue was related to injectors on that pickup. Its a pain of a test, but worthwhile.

Hollar at me if you need assistance with bulletins, etc.