I had a shop run a diagnosis. IT came up with code 0055. They said it meant I needed to replace the speed sensors located on my transmission. I replaced them. This code still comes up.
Another shop told me the reason it still comes up is because I need to update my software. They'd be happy to do it....for $250. I tried calling two GMC dealers and they were of no help at all. BUT, they'd be happy to run another diagnosis for $160...
Has anyone heard of such a software update or a problem like Im experiencing?
thxs!
Sorry, a little brain dead here. I forgot (typo Im sure) to put in the C.. The correct code is C0055. Thx for your input though
This code has nothing to do with speed sensors. It has to do with the heater circuit of the 3rd 02 sensor on bank 1. Autozone, $47.99. Unscew the old one, screw in the new one and send me the $250.00.
