Posted 7/7/2025 22:03 (#11289857 - in reply to #11289703) Subject: RE: Duramax machinery
N Central IA
The one with the p0087 code does it only when pulling my camper, gives a engine derated but it actually doesn’t derate, it runs fine starts fine wouldn’t know there is an issue other than the check engine light and derate pops up. It’s been tuned for at least ten years.
Duramax machinery
