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2007 GMC Yukon - 5.3L VIN 3 Flex
Posted: Mon Oct 10, 2011 9:40 am
by bobstire8535
HAVE A GMC YUKON ORIGINALLY WAS TOWED IN WITH THE FUEL TANK PRESSURE SENSOR BLOWN OUT OF THE TOP OF THE SENDING UNIT.
VEHICLE HAD LOTS OF MILES SO WE PUT IN A GM OE SENDING UNIT IN IT IN AUGUST. VEHICLE CAME BACK TODAY OCT 10 WITH THE SAME EXACT ISSUE. NO DTC'S IN THE COMPUTER, EVERYTHING SEEMS TO BE FINE.
ANY THOUGHTS?
Re: GMC YUKON 2007 5.3L VIN 3 FLEX
Posted: Mon Oct 10, 2011 9:57 am
by Cory
Are there any codes to go with this, I would make sure all your evap equipment is working correctly. Canister, Valves...
Re: GMC YUKON 2007 5.3L VIN 3 FLEX
Posted: Mon Oct 10, 2011 10:03 am
by bobstire8535
NO TROUBE CODES AT ALL EITHER TIME. NO BLOCKAGE IN EVAP OR VENTING LINES.
Re: GMC YUKON 2007 5.3L VIN 3 FLEX
Posted: Mon Oct 10, 2011 10:04 am
by sbebenelli
Any codes? Seems like a EVAP venting problem. Does the customer complain about taking forever to put gas in the tank?
Re: GMC YUKON 2007 5.3L VIN 3 FLEX
Posted: Mon Oct 10, 2011 10:10 am
by steven kiser
look at the evap hoses. may be kinked or crossed. otherwise i would look into a bad vent valve. it may not blow a code because the pcm is allowing it to vent so it expects it.
