Here's a general overview of what's involved – but this is not a DIY guide, you should consult a repair manual specific to your Blazer's transmission:
1. Disconnect the battery: This is crucial for safety.
2. Drain the transmission fluid: Completely drain the transmission fluid into a suitable container.
3. Remove the transmission cooler lines: Carefully disconnect the transmission cooler lines, being prepared for some fluid spillage. You might want to use plugs or clamps to prevent fluid loss.
4. Disconnect the driveshaft: Separate the driveshaft from the transmission.
5. Disconnect the electrical connectors: Disconnect any electrical connectors attached to the transmission.
6. Remove the transmission mounting bolts: Carefully remove all the bolts securing the transmission to the engine.
7. Support the transmission: Use a transmission jack or suitable support to carefully lower the transmission. This is extremely important to prevent damage.
8. Separate the torque converter from the transmission: Once the transmission is lowered enough, you'll be able to access the torque converter bolts. These are usually located on the transmission's bell housing, where the converter mates with the transmission.
9. Remove the torque converter bolts: Carefully remove the bolts. Keep track of their order and location.
10. Reassembly: Reassembly is the reverse of the disassembly process. Remember to use new gaskets and seals as needed, and torque bolts to the manufacturer's specifications (found in your repair manual). Properly refilling the transmission fluid with the correct type and amount is also critical.
Again, this is a complex procedure. Improperly performing this task can cause significant damage to your vehicle, potentially requiring expensive repairs. Unless you have substantial experience with automotive repair, this is a job best left to a qualified mechanic. They have the tools, expertise, and resources to do it safely and correctly. Attempting this without the necessary knowledge could lead to injury or significant damage to your vehicle.
