I have a 2002 gmc (158,000kms) with a allison 1000 series 5 speed automatic. My question is why would it shift into 3rd gear and stay when driving down the road at highway speeds. I have taken it in to 2 dealers and no answers.There is a code that comes but they say it's no help(go figure). To reset this problem i have to pull over and shut off the ignition and start it again and drive away. Also it stays in 3rd even when you are at a dead stop and try to drive away.
Should I take it to a transmission shop? Found a truck shop that repairs allison and they told me to take it to the dealer, that they only work on the bigger trucks. Does anyone know wher there might be a helpfull repair in Sarnia, Ontario Canada or close by???
please help !!!!
:laugh:
Should I take it to a transmission shop? Found a truck shop that repairs allison and they told me to take it to the dealer, that they only work on the bigger trucks. Does anyone know wher there might be a helpfull repair in Sarnia, Ontario Canada or close by???
please help !!!!
:laugh: