BY JIM BIGLEY
POO87 SAGA
I just returned to Illinois from Quartzsite towing my 12,000-pound fiver. I have 123k miles on my ’09 LMM Duramax at this point. I had no problems going south in January, but the truck experienced several P0087 episodes on my return to Illinois last week—usually on the bigger hills and a couple of hours into the day and with a lower fuel level in the tank (the usual cast of characters, evidently).