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tccrab · 07-01-2008

http://www.troublecodes.net/GM/90_57J.shtml

Vacuum sensor voltage was either above 5 volts or below 0.46 volts.

Maybe a connector not connected?

TomC

07-01-2008	#2
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,663	Re: Code 56? http://www.troublecodes.net/GM/90_57J.shtml Vacuum sensor voltage was either above 5 volts or below 0.46 volts. Maybe a connector not connected? TomC