GM 17804153 Transmission Asm,Auto (Goodwrench Remanufacture)(3Axp)

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To ensure proper alignment of the torque converter during installation, turn the torque converter to align the marks on the converter and driveplate.

The tools necessary for a transmission overhaul include internal and external snap-ring pliers, a bearing puller, a slide hammer, a set of pin punches, a dial indicator, and possibly a hydraulic press. A large, sturdy workbench and a vise or transmission stand are also required.

Reinstall the shift lever, reconnect the negative battery cable, road test the vehicle, and check for leaks to ensure everything is functioning correctly.

Overhauling a manual transmission involves the disassembly and reassembly of many small parts. Precise measurements of clearances must be taken and select fit spacers and snap-rings may need to be changed.

Inspect the clutch components during removal. For installation, if the clutch components were removed, install them, and for heavy-duty four-speed models, attach the clutch housing if it was removed.

To remove the transmission, start by disconnecting the negative battery cable, raising the vehicle, and draining the transmission fluid before reinstalling the pan. Remove the torque converter cover and mark the torque converter and driveplate for proper reassembly. Proceed to remove the driveplate-to-torque converter bolts and the starter motor, and then take off the driveshaft(s) and disconnect any necessary components, such as the vehicle speed sensor, wire harness connectors, vacuum hose (if equipped with a 3L80/3L80-HD), and exhaust components. If equipped with a 4L60 (700R-4), disconnect the TV cable. Disconnect the shift linkage or cable, and support the engine and transmission with jacks. Remove the rear transmission mount-to-crossmember nut, cross-member-to-frame nuts and bolts, and the crossmember. Lower the transmission slightly and disconnect and plug the transmission fluid cooler lines. Remove the transmission dipstick tube, ensuring the torque converter is secured. For installation, confirm the torque converter hub is securely engaged in the pump. If working on 1996 and later models, install new quick-connector fitting E-clips into the transmission cooler line fittings, and then raise the transmission into position while keeping it level to prevent the torque converter from sliding out. Connect the transmission fluid cooler lines and verify a secure connection. Turn the torque converter to align the marks on the converter and driveplate. Carefully move the transmission forward until the dowel pins engage with the bellhousing holes, then install the transmission housing-to-engine bolts and tighten them securely. Install the driveplate-to-torque converter bolts, the crossmember, and lower the mount stud into its hole. Remove the jacks supporting the transmission and engine, and proceed to install the dipstick tube, starter motor, vacuum hose(s) (if equipped), shift and TV linkage or cable, wire harness connectors, torque converter cover, driveshaft(s), speedometer cable, and exhaust system components. Lower the vehicle, fill the transmission with the specified fluid, run the engine, and check for fluid leaks.