GMC 15613400 Cable Asm Accelerator Control

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The throttle valve cable used on these transmissions is not just a "downshift" cable, as it controls various aspects of the transmission's operation. It regulates line pressure, shift points, shift feel, part throttle downshifts, and detent downshifts. If the TV cable is broken, sticky, misadjusted, or the wrong part, the vehicle will experience several problems. To inspect the cable, remove the engine cover and have the engine running at idle speed with the selector lever in Neutral. Set the parking brake and block the wheels for safety. With an assistant applying the brake pedal, grab the inner cable a few inches behind where it attaches to the throttle linkage and pull it forward. It should slide smoothly through the cable housing without any binding or jerky operation. When released, it should return to its original location with the cable slop against the cable terminal. If the TV cable does not operate as described, it is likely due to a defective or misadjusted cable or damaged components at either end. To adjust the cable, the engine should not be running. Depress the re-adjust tab and move the slider back through the fitting away from the throttle linkage until it stops against the fitting. Release the re-adjust tab and turn the throttle lever to the "wide open throttle" position, which will automatically adjust the cable. After adjustment, check for proper operation.

To replace the accelerator cable, follow these steps:Detach the cable from the negative terminal of the battery.Remove the air filter housing and adapter.Locate the forward end of the throttle cable at the engine.Pop the retaining clip on the end of the throttle linkage stud loose with a small screwdriver.Disconnect the retainer from the throttle lever stud.Disconnect the throttle cable from the notch on the throttle valve.Pinch the two locking tabs of the ferrule together and pull the cable through the hole in the bracket.Locate the upper end of the accelerator pedal lever.Pull the small plastic brush out of the top of the lever.Push the lever forward and lift the cable free of the slot in the top of the lever.Locate the spot immediately above and forward of the upper end of the accelerator pedal lever where the cable comes through the firewall.Pull the large rubber washer loose.Pinch the locking tabs together and pull the cable through the firewall.Installation is the reverse of removal.

Compress the locking tabs and disconnect it.

To inspect the cable, remove the engine cover and have the engine running at idle speed with the selector lever in Neutral.

Push in on the re-adjust tab.