How many hours to remove and replace a transmission on a 2004 gmc envoy 4.2L,4x

Hello, One guide places the job at 8.5 hours. However, you should have the issue diagnosed before replacing the transmission. It may not require a transmission rebuild or replacement. There are lots of 4l60e transmissions out there, and every transmission specialist has seen hundreds or thousands. They'll be able to diagnose it with ease.

Check for detached shifter cable - drivers side of transmission .. Common for the plastic grommet to wear over time which allows cable to 'pop off' of the transmission linkage. Repair *grommet* is available - aftermarket - no need to replace the cable assembly.