I know this subject has been discussed to death on this forum, but I'm still having problems. I checked the TPS sensor and it works per the proceedures in the sticky. I adjusted the TV cable as well. Still no overdrive. I feel the transmission shift twice from a full stop. I have 3.54 gears and at 60 MPH I'm at 2500RPM.

 

Check the crank sensor cable. Mine was been rubbed through by one of the pulleys causing a minor short. It eventually rubbed all the was through which caused the Alternator to stop charging, that's how I noticed it. Once it was all spliced back together truck starting charging and shifting into OD

 

Does your speedo still work? Have you checked the VSS?

 

My OD switch was out on mine....just had a bad switch...the od in these trucks has always seemed to have a hard time being consistent.....get a potentimeter to fix that.

 

Thanks, I'll give all this a try.