OEM Cadillac STS Transmission Oil Cooler

Cadillac STS Transmission Oil Cooler Parts Questions & Experts Answers

• Transmission Cooler
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  Q: How to replace the Transmission Oil Cooler in the 6L50/6L80/6L90 automatic transmission on Cadillac STS?

  A: To change the engine oil and trans fluid cooler on the 6l50/6l80/6l90 automatic transmission, start by removing the A/C Condenser mounting bolts to move the condenser out the way to access the cooler. Use the cooler quick connect tool (J 41623-B) to disconnect the Transmission Oil Cooler (TOC) lines from the Transmission Oil Cooler, then disconnect toc lines from the toc retainer clip. Then, use the 1/2 inch quick connect release tool (DT-47731) to release the Engine Oil Cooler (EOC) lines of the cooler and take off the eoc lines from the cooler retainer clips. Do that, then remove the cooler mounting bolts and take out the cooler. To install the cooler, place it back in position, fix the cooler mounting bolts with right tightening to 5 n.m (44 lb in). While completing this task, attach the eoc lines to the cooler and attach to the eoc retaining clips before attaching the toc lines to the Transmission Oil Cooler and attaching the toc line to the toc retainer clip. Lastly, reposition and install condenser.