Chevrolet 17804133 Transmission Asm,Auto (Goodwrench Remanufacture)(3Mcp)

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During the transmission removal process, you should disconnect the driveplate-to-torque converter bolts, the starter motor, driveshaft(s), vehicle speed sensor, wire harness connectors, vacuum hose (if equipped with a 3L80/3L80-HD), exhaust components, and, if equipped with a 4L60 (700R-4), the TV cable.

After removing the shift lever, raise the vehicle and support it securely on jackstands. This is important to ensure safety during the removal process.

During the disassembly of the transmission, it is important to make careful notes of how each piece comes off, where it fits in relation to other pieces, and what holds it in place. This will make reassembly easier.

Support the engine and transmission separately, with the latter supported by a special jack. Remove the nuts from the crossmember bolts, raise the transmission slightly, and remove the crossmember. On heavy-duty (cast iron case) transmission models, remove the transmission-to-clutch housing bolts; on normal-duty models, remove the transmission-to-engine bolts. Ensure all wires are disconnected, and then move the transmission and jack toward the rear of the vehicle until the transmission input shaft is clear of the clutch or clutch housing. Lower the transmission, taking care not to depress the clutch pedal while it's out.

After removing the transmission pan and draining the fluid, you should remove the torque converter cover and mark the torque converter and driveplate for proper reassembly.

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.