Avalanche transmission won't shift into 2nd 3rd or 4th gear
I have a 2004 Chevy Avalanche. Two wheel drive.
Transmission stuck in first gear. I can drive it but
it'll only go up to about 30 miles per hour Terry and
will Redline if I try to go any faster. It won't shift. I
had both shift solenoids replace. Take it back for
Diagnostics and got a couple erratic speed sensor
codes. Not sure if that would stop the
transmission from shifting
Please let me know if you have any solutions. I'm having the same trouble with my 07 avalanche 4x4.