What causes a PO826c code and is it hard and expensive to fix? on 2005 Chevrolet Malibu Maxx

Model LS 3.5 engine. I got this code along with PO449b & PO455b. I had a very bad and loose gas cap and have just recently replace it with an OEM cap from the dealer. Once I got the new cap the shop reset my engine light and said to see if it stayed off but as soon as I filled up and restarted it came back on. Why would a low range up/down shift switch affect my inspection status in the first place? I almost never take it out of drive.

by in Rochester, NY on July 16, 2012
1 answer 5 comments
ANSWER by on July 16, 2012
i show no po828 plaes recheck that the other codes are evap codes and can cause you fits have them diag and get an est and save time and $
COMMENT by on July 16, 2012
It was a PO826c, not PO828. Thank you for the fast response.
COMMENT by on July 16, 2012
sorry no glasses po828 has to do with the tap shifter circuit in the car
COMMENT by on July 16, 2012
a big $ fix?
COMMENT by on July 16, 2012
not really if you break it down. depends on the diag if its parts or circuits. but u can fix in stages misfire 1st
COMMENT by on July 16, 2012
Thanks for your help. Greatly appreciated. Ed

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