have a 09 gmc sierra 4wd
engine light on abs light and traction control lights on. scanne codes came up
and o2 sensor and rear abs sensor codes changed them tried to clear codes
will not allow us to clear truc k runs fine what could be wrong
Could be the scanner, but if the problems are corrected properly the check engine light and the others will turn off in about 20 cold starts. Or you could swing by a parts store and see if thier code reader can clear them.
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