GM vehicles equipped with the 700R4 automatic transmission use a throttle valve cable to control the shift characteristics of the transmission. Commonly known as a TV cable, this cable connects the transmission with the carburetor or fuel injection throttle body. It is imperative that you properly adjust the TV cable any time the transmission has been out of the vehicle for any reason. The adjustment can be completed in less than five minutes, and no tools are required.
Locate the slider on the end of the TV cable that goes to the engine. Refer to the service manual for a diagram if you are unsure of its location.
Press the adjustment tab on the slider and hold it while pushing the cable into the slider as far as it will go. Release the tab.
Get in the vehicle and press the accelerator as far as it will go. The TV cable will self-adjust as you do this.
Drive the vehicle and check that it shifts from first to second gear at 15 to 20 mph, from second to third at 25 to 30 mph and from third to fourth at 40 to 45 mph.
