GM 25521268 Automatic Transmission Throttle Valve Cable Assembly

The throttle cable used on these transmissions should not be thought of as a "downshift" cable. The throttle cable controls line pressure, shift feel, shift points, detent downshifts and part throttle downshifts. The function of the cable is similar to the combined functions of a detent cable and a vacuum modulator. To replace it, first remove the air cleaner. Then, detach the cable terminal (end) from the throttle lever by pulling it forward, off the mounting lug. Compress the locking tangs on the cable housing and detach the housing from the bracket by pinching the locking tangs of the throttle cable housing with a pair of pliers and pushing the housing through the bracket. Remove the routing clips or straps. Trace the cable to the transmission and remove the bolt and the flat washer. Pull up on the cable cover at the transmission until the cable is visible, then disconnect the cable from the transmission link. Remove the seal. Installation is the reverse of removal. Be sure to tighten the bolt securely. When you're finished reattaching the throttle cable assembly, adjust it. With the engine off, depress and hold down the metal re-adjust tab at the engine end of the throttle cable. Move the slider until it stops against the fitting. Release the re-adjust tab. Rotate the throttle lever to its full travel position. The slider must move (ratchet) toward the lever when the lever is rotated to its full travel position. Make sure the cable moves freely. The cable may appear to function properly with the engine stopped and cold. Recheck it after the engine is hot. Finally, road test the vehicle.

The throttle cable used on these transmissions should not be thought of as a "downshift" cable. The throttle cable controls line pressure, shift feel, shift points, detent downshifts and part throttle downshifts. The function of the cable is similar to the combined functions of a detent cable and a vacuum modulator. To replace it, first remove the air cleaner. Then, detach the cable terminal (end) from the throttle lever by pulling it forward, off the mounting lug. Compress the locking tangs on the cable housing and detach the housing from the bracket by pinching the locking tangs of the throttle cable housing with a pair of pliers and pushing the housing through the bracket. Remove the routing clips or straps. Trace the cable to the transmission and remove the bolt and the flat washer. Pull up on the cable cover at the transmission until the cable is visible, then disconnect the cable from the transmission link. Remove the seal. Installation is the reverse of removal. Be sure to tighten the bolt securely. When you're finished reattaching the throttle cable assembly, adjust it. With the engine off, depress and hold down the metal re-adjust tab at the engine end of the throttle cable. Move the slider until it stops against the fitting. Release the re-adjust tab. Rotate the throttle lever to its full travel position. The slider must move (ratchet) toward the lever when the lever is rotated to its full travel position. Make sure the cable moves freely. The cable may appear to function properly with the engine stopped and cold. Recheck it after the engine is hot. Finally, road test the vehicle.

When servicing the accelerator cable, the following considerations are important:The retainer must be installed with the tangs secured over the head of the stud.The conduit fitting at both ends of the cable must have its locking tangs expanded and locked in the attaching holes.The braided portion of the accelerator cable must not come in contact with the front of the dash sealer during assembly, repair, or replacement.Flexible components must not be routed within two inches of the moving parts of the accelerator linkage outboard of the support bracket unless the routing is positively controlled.

Remove the trim panel from under the dash and pull the accelerator cable retainer out of the pedal, then slide the cable through the slot.

First, place the shift lever in the Neutral position of the shift indicator and position the transmission shift lever in the Neutral detent.

Connect it and adjust the cable.

The throttle valve cable controls various aspects of the transmission's operation, including line pressure, shift points, shift feel, part throttle downshifts, and detent downshifts.