Truck over revving in 1st shifts hard into second
I have a 2007 Sierra classic with 4L60e and it’s
been over revving between first and second gear,
Its throwing O2 sensor codes I’m not sure if that
could cause it. I checked all the fuses and
everything is good so I’m thinking it might be the
the shift solenoids, but I guess what I’m really
wondering is if it could be the O2 sensors?