2005 Chevrolet Avalanche 1500 Q&A
2005 Chevrolet Avalanche 1500 Question: transmission not shifting correctly
You may have a fault with one of your shift solenoids. There should be a fault code stored in your powertrain control module. Accessing the code or codes should help to diagnose your transmission fault. - Russ
Happened today, truck is parked luckily in secure place, but not able to be towed at current location.