Chevy Blazer Transmission Interchange

Hi, do you want to know about the Chevy Blazer transmission interchange? Alright, we will discuss it here. But before that, you also need to know how to remove the transmission from the Chevy Blazer as well as the tools and equipment you need to use. Make sure before starting work, use feasible safety equipment: safety glasses and gloves.

Chevy-Blazer-transmission-interchange

 

Steps to remove the Transfer Case and Chevy Blazer Transmission

  1. In the first step, you need to disconnect the negative side of the battery or both. You can use a 5/16″ socket.
  2. Next, remove the air breather and also unplug the sensor inside. Use a flathead screwdriver and remove the twist nut over the carburetor by hand.
  3. After that, remove the rotor cap using a Torx T-20 or T-15 socket. Also, you can place the socket on a small multi-socket screwdriver. Another alternative is you can use a 1/4″ drive ratchet, it will work fine.
  4. Go to rotor cap and you need to remove passenger side spark plug wires. To make it easy, we suggest you label them, it will make your life easier whenever you want to reinstall, you will know the correct location according to the label.
  5. Once the wires are removed from the one side you can move the rotor cap to the driver side, out of your way.
  6. Remove the electrical plug in the distributor. This will allow room to get to the top transmission bolt.
  7. Provide a drain pan or similar bucket to place all the bolts in.
  8. Use the jack stand to secure the vehicle, all around will be better. Make sure you have ample height to remove the transmission from underneath the car.
  9. Pry the shift cable from the shift lever on the trans and disconnect the shift linkage.
  10. Use a flathead screwdriver to pry the horseshoe retainer from the cable.
  11. Remove carefully the cable from the bracket by squeezing the retainer. Pull the cable toward the back while squeezing.
  12. Unplug the entire electrical connectors around the transmission and transfer case. The position is at the top rear of the transfer case part and some are located on the side of the driver on the transmission.
  13. If it’s 4WD then you can easily remove a part called the front driveshaft. Remove the four bolts using a 7/16 socket. Use a crowbar or a large flathead screwdriver to brace the shaft from moving. We suggest you spray every bolt you remove through this entire job with a rust penetrator, preferably PB blaster. Rotate the shaft by hand to get to the other side bolts.
  14. Mark the shaft and shaft housing with paint so you can reinstall the shaft in the same position.
  15. Spray the joints with a rust penetrator and pry the shaft loose. Try not to let the cups fall off because they contain all small metal bearings.
  16. Pry the shaft from the transfer case.
  17. Remove sensor plug using an 8 mm socket. Its located on the transfer case just above the shaft.
  18. Remove the fuel line bracket from the transmission using an 8 mm socket. Don’t forget to mark the rear driveshaft and housing with paint before removing it. This will let the vehicle to remain in the proper dynamic balance. Remove the rear driveshaft bolts using a 7/16 wrench. It’s difficult to get a socket on the bolt unless you have a swivel.
  19. Move the transmission shift lever in gear in order to rotate the driveshaft. Pry the shaft loose.
  20. Remove the 2 bolts completely from the transmission mount using a 15 millimeters socket. Then remove also the cross member bolts (2 bolts on each side). For this step, you’ll need an extension a 13 mm socket, and a 15 mm wrench to remove the bolts located on the driver side. Use a 15 millimeters deep socket and a 13 mm wrench to remove the passenger side bolts. Slightly jack the transmission up and fully remove the cross member.
  21. Remove the O2 sensor plug from the passenger side, choose the better angle to make it easy to do.
  22. Remove the exhaust cross pipe. Three 9/16 bolts on each side (The donuts between the manifold and pipe will fall down). Remove the three 15 mm bolts that attach the cross pipe to the chevy catalytic converter. There is a strong chance these bolts will break off during removal. Remove the exhaust cross pipe.
  23. Remove the starter, use 9/16 socket, medium size extension. If you want to prevent starter to drop when you remove other bolts then don’t remove the first bolt all the way. When bolts are removed, next move the starter back out of the way.
  24. Remove carefully the blazer torque converter cover, two 10 mm bolts. Remove the chevy blazer torque converter access cover located underneath the transmission using a flathead screwdriver. Rotate the flywheel clockwise until you see the first of three bolts through the starter hole. Remove bolt number one using a short 15 mm socket. Once the flywheel bolts are removed, start removing the transmission bolts using 14 mm or 9/16 socket. You can use 12 points offset box wrench 9/16 to remove it. You have to patient with this bolt.
  25. You will get the passenger side top transmission bolt using the same offset wrench. The dipstick tube is also connected to the engine with this bolt. When you get it loose with the offset wrench then you can use 9/16 ratchet wrench. The final transmission bolt is almost impossible to reach. Here’s the trick, you can slit the carpet just parallel to the accelerator pedal and folded it back. Then you can make a 1-inch hole using a Unibit (the drilling location is 5.5″ parallel to the middle of the accelerator pedal arm). It only takes less than 10 secs. But be careful when drilling because there’s a wiring harness near the drilling area. You can use a screwdriver to move the harness to the side to expose the screw. Now you can easily remove the bolt using a 3/8 dr. 9/16th socket and a long extension. Use a magnet and remove the screw. You can cover the hole with aluminum tape or a small rubber stopper or rubber grommet. You can run the harness for your plow controller through there.
  26. Pry the transmission loose from the engine and turn it down a little bit. Once lowered, remove the large plug at the passenger side from the transmission. Remove the plastic washer nut that covers the retainer clip to remove the cooler lines. Remove the retainer clip part from both lines using a thin flathead screwdriver or knife. You can use some channel locks to get a strong grip on the line and pulled it out. Remove the bracket located on the transfer case: two 15 mm bolts. This bracket needs to be removed in order to push the shifter cable to the side.
  27. Remove the dipstick tube.
  28. Now, slowly ease the transmission down. Make sure everything is unhooked and clear before lowering completely. Lower the transmission and catch the excess fluid with your pan. Lower the front side of the transmission completely. Notice how the back is resting on the frame brace in the middle position of the vehicle.
  29. Jack the rear side of the transmission up until it clears the frame brace. Once it clears it, slide the transmission forward and then lower the jack. Slide the transmission from under the vehicle. Congratulations, you have successfully removed your Chevy transmission.
You can do Chevy Blazer transmission interchange or replace it. Also, you always need to remove the transfer case because the transmission is attached to it. After that, you can make important changes on the ground.

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