Happened again after a 6 hour drive in the rain- followed by freezing temps near Lake Superior. Same code. Took out the air filter, let the filter sit inside the house overnight and reinstalled (pain in the azz to install when everything is "cold"). After the 3rd start w/o an error, the check engine lamp went out & hasn't come back on (yet).
Also noted the Delco and GM p/n for this air filter, as posted in the owner's manual, are wrong! From the actual filter itself:
GM p/n 84262965; Delco p/n A3231C
Odd shape to this filter (opposing corners are NOT 90 deg angles), with a pre-filter foam mounted to the paper pleats. Pics attached.
Last edited by chessy56; 11-26-2017 at 18:58.
Reason: additional detail
"Chessy56"
So. Milwaukee, WI
'01 2500HD, LB7, ~440K miles
"Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).
'17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.
"Socialism is a philosophy of failure, the creed of ignorance and
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