P0442 OBDII DTC - again - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**jocko** · 06-09-2010, 08:52 PM

Good evening folks - normally hang out on the 60-66 pages herein, but also drive a 2001 Z71. Have the dreaded recurring P0442 with check eng light MIL. Gas cap and seal appears to be fine - all lines to/from canister seem fine - are there any threads on here that hav discussed the most likely fixes of this nuisance code? I've got an Actron scanner - check the code every time it pops and reset it, but it sure is getting old. Appreciate your help.
Jocko

06-09-2010, 08:52 PM	#1
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,975	P0442 OBDII DTC - again Good evening folks - normally hang out on the 60-66 pages herein, but also drive a 2001 Z71. Have the dreaded recurring P0442 with check eng light MIL. Gas cap and seal appears to be fine - all lines to/from canister seem fine - are there any threads on here that hav discussed the most likely fixes of this nuisance code? I've got an Actron scanner - check the code every time it pops and reset it, but it sure is getting old. Appreciate your help. Jocko



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