2000 Chevrolet Silverado 2500 Q&A
2000 Chevrolet Silverado 2500 Question: transmission wont engage 4 hi light just flashes and service 4x4 comes on.
Sounds like your transmission controler is sensing a problem thus not allowing it to shift. Seek a shop that can scan powertrain system for fault codes and diagnose the problem. - milesauto
scan trans codes and post so we can adv - globalhelper