Code #41 and #55 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

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Code #41 and #55

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10-13-2007, 02:43 PM	#1
Rc 415 Flat Black, & Chrome! Join Date: Jan 2007 Location: San Francisco Posts: 852	Code #41 and #55 I'm reading my computer and its showing a code #41, No distributor reference pulses at specified engine vacuum. And, a code #55, Grounded V rev (term21), hush voltage on oxygen sensor circuit ECM. Can anyone tell me what these mean and how to fix them? __________________ 1983 Chevy C10 Stepside Sold http://s69.photobucket.com/albums/i76/rc_415/

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