Installation Procedure
WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
- Install the J-21366 converter holding strap onto the transmission bell housing to retain the torque converter.
- Support the transmission with a transmission jack.
- Raise the transmission into place while simultaneously installing the fluid indicator tube.
- Remove the J-21366 converter holding strap from the transmission.
- Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter.
The torque converter must rotate freely by hand.
- Install the 8 bolts securing the transmission to the engine and tighten to 50 N.m (37 lb ft).
- Unstrap the transmission from the jack.
- Position the fuel line bracket to the back of the engine at the transmission and install the nut. Tighten the nut to 10 N.m (89 lb in).
- Position the vent tube bracket to the back of the engine at the transmission.
- Install the vent tube bracket retaining nut and tighten to 10 N.m (89 lb in).
- Position the transmission dipstick tube and seal into the transmission.
- Install the dipstick tube retaining fastener and tighten to 10 N.m (89 lb in).
- Remove the plugs in the oil cooler lines in the transmission case.
- Connect the oil cooler lines (1) to the transmission. Refer to Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (L83 MYC) .
- Install the bolt that secures the fuel line bracket to the transmission and tighten to 10 N.m (89 lb in).
- Install the wire harness to the transmission.
- Connect the transmission electrical connector to the transmission.
- Connect the transmission vent hose.
- Install the range selector cable (2) and the transmission range selector lever as an assembly.
- Install the retainer (1) that secures the cable to the bracket.
- Install the transmission heat shield.
- Install the 2 bolts securing the heat shield to the transmission and tighten to 17 N.m (13 lb ft).
- Install the transfer case, if equipped. Refer to Transfer Case Assembly Replacement , for the MP 3010-NP0 transfer case or Transfer Case Assembly Replacement for the MP 3023/3024-NQH transfer case.
- Raise the transmission in place using the jack.
- Install the catalytic converter pipe. Refer to Three-Way Catalytic Converter Replacement .
- Install the transmission mount. Refer to Transmission Mount Replacement (Two Wheel Drive) Transmission Mount Replacement (Four Wheel Drive) .
- Install the transmission crossmember. Refer to Transmission Support Crossmember Replacement (2WD)Transmission Support Crossmember Replacement (4WD) .
- Remove the transmission jack.
- From the torque converter access hole, push the torque converter forward to seat the converter pilot in the crank bore.
- If reusing the torque converter bolts, clean the bolt threads and apply sealant. Refer to Adhesives, Fluids, Lubricants, and Sealers .
- Install the flywheel to torque converter bolts and tighten to 65 N.m (48 lb ft).
- Install the steering gear skid shield. Refer to Steering Gear Skid Shield Replacement .
- Install the right flywheel inspection cover and bolt. Tighten the bolt to 12 N.m (106 lb in).
- Install the starter motor. Refer to Starter Replacement (L83, L86)Starter Replacement (L96) .
- Install the left flywheel inspection cover and bolt. Tighten the bolt to 12 N.m (106 lb in).
- Install the torque converter access plug.
- If the vehicle is equipped with a transfer case, install the front propeller shaft. Refer to Front Axle Propeller Shaft Replacement (NQH)Front Axle Propeller Shaft Replacement (Heavy Duty) .
- Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement (1500)Rear Propeller Shaft Replacement (Heavy Duty)Rear Propeller Shaft Replacement (M5U, 2WD) .
- Lower the vehicle.
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Dual Battery)Battery Negative Cable Disconnection and Connection (Single Battery) .
- Check the transmission fluid level and fill if necessary. Refer to Transmission Fluid Level and Condition Check .
- If a NEW TCM has been installed into the vehicle, the NEW module needs to be reprogrammed. Refer to Service Programming System (SPS) .
- Transmission internal service/overhaul
- Valve body repair or replacement
- Control solenoid valve assembly replacement
- TCM software/calibration update
- Any service in response to a shift quality concern
- Perform the Reset Transmission Adapts. Refer to Reset Transmission Adapts .
CAUTION:
Refer to Fastener Caution .
NOTE:
The Service Fast Learn Adapts procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set: