2002 Blazer Ls 4wd Issues

I have a 2002 Blazer LS the 4WD will not switch into 4hi but it does engage in 4LO. Any information and advice is greatly appreciated.

For this, try resetting the encoder motor, by disconnecting the battery for a few minutes and reconnect and try. See if this helps or not.

Thank you for the prompt reply blazes9395. I disconnected the battery and this seems to have solved the problem. Thanks again