2004 Silverado 1500 Z71 transmission problems
I did a transmission service (flush, gasket, filter) yesterday. We had some trouble getting the pan off because the exhaust crosses the truck directly under the pan, so we had to use a little more force than is usually necessary to pry it out. I also replaced the transfer case control module (with a refab, preprogrammed module) and did a transfer case flush. Now I have very little power in D. The truck doesn't move in Park and reverse works just fine. We're thinking either the shift linkage is loose or we busted a switch for the gears. Just wondering if anyone here has any other ideas.
Thanks in advance for the help