Serious Problem... NEED HELP

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#11

06-01-2010, 09:16 PM

BummerHummer

Junior Member

Join Date: Mar 2010

Location: San Jose, Ca.

Posts: 19

I am a G.M. tech, if you can get me the codes I can give some help right from the OEM website. The high shift point, and the speedo malfunction sounds like a bad comm. between the speed sensor and ECM/PCM. The place to start is with the codes.

Jim

#12

06-01-2010, 09:45 PM

2wheelmonster

Senior Member

Join Date: Jan 2009

Posts: 1,439

I would be shocked if the O2 sensor problem threw the whole engine off like that, but then again technology is great.... only when it works properly

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