There is a cable that runs from the throttle body to the trans. There is an adjustment on the cable at the throttle body. It sounds like it needs to be adjusted
May, 22, 2014 AT 5:59 PM
I adjusted it every way but loose no change
June, 18, 2014 AT 11:50 AM
I replaced shift cable shift points are better 1-2, 2-3 still no overdrive. Overdrive lite on dash should be off to achieve overdrive. The rpms are very high 40mph 3.5 grand. I took a voltage reading at tps reading.619 reading should be.89 to 1.20, unplugged tps took resistance reading from 4.0 to 0 ohms. Coolant temp sensor good, overdrive solenoid is getting power to the sol. And thur the sol. Will a tps cause no 4th gear?