Fluid Line/Hose: Service and Repair
Transmission Fluid Cooler Hose/Pipe ReplacementRemoval Procedure
1. Remove the transmission oil cooler (TOC) lines from the radiator.
On vehicles equipped with a 4.3L engine and 4WD, it may be necessary to gain access to the lower cooler line (2) through the right side wheel well opening.
2. Raise the vehicle.
3. For vehicles equipped with a 2.2L engine, remove the nut securing the cooling line to the engine.
4. For vehicles equipped with a 4.3L engine, remove the clip and stud securing the cooler line to the engine.
5. Support the transmission with a transmission jack.
6. Remove the exhaust crossover pipe and the transmission support assembly.
7. Carefully lower the transmission to gain access to the cooler line fittings.
8. Remove the TOC lines from the fittings on the transmission. If the vehicle is equipped with 4WD, it may be necessary to disconnect and temporarily relocate the transfer case vent hose to provide access to the fittings.
9. Remove the TOC lines from the vehicle.
Installation Procedure
1. Install the TOC lines to the vehicle.
2. Install the TOC lines to the transmission.
3. Install the transfer case vent hose, if equipped.
4. Raise the transmission into position.
5. Install the exhaust crossover pipe and the transmission support assembly
6. Remove the transmission jack.
Notice: Refer to Fastener Notice in Service Precautions.
7. For vehicles equipped with a 4.3L engine, install the stud and clip securing the TOC line to the engine.
^ Tighten the stud to 11 Nm (97 inch lbs.).
8. For vehicles equipped with a 2.2L engine, Install the nut securing the TOC lines to the engine.
^ Tighten the nut to 11 Nm (97 inch lbs.).
9. Lower the vehicle.
10. Install the TOC lines to the radiator
11. Fill the transmission to the proper level with DEXRON (R) III transmission fluid.