2003 Avalanche 1500 hangs on 35mph before hard shifting
I have a 2003 Chevy avalanche 1500 That hang on
35 mph before it hard shifts .. I changed the
acceleration position sensor but it still hangs at 35
before hard shifting
Sounds like an electronic module of some sort not doing its job. A visit to a transmission shop for repair and service will probably take care of it.