OEM 2005 Cadillac STS Drive Shaft

2005 Cadillac STS Parts Questions & Experts Answers

• Q: How to replace the front drive shaft on 2005 Cadillac STS?

  A: The procedure for front propeller shaft replacement begins with supporting and lifting the vehicle. Begin the replacement by first removing the propeller shaft heat shield followed by unbolting the propeller shaft CV Joint from the differential flange while marking the transfer case flange constant velocity (CV) joint position. You should insert a flat-bladed tool into the differential flange notch then pull the propeller shaft towards the back to detach the CV Joint from the differential pinion flange. The correct procedure involves uninstalling the bolts from the propeller shaft CV Joint-to-transfer case flange while inserting a flat-bladed tool into its transfer case flange notch. Then, push the propeller shaft toward the front to disconnect it. The inspector should check the propeller shaft to ensure CV Joint rotation inside the propeller shaft tube along with checking for grease leakage while also inspecting the condition of both cv joints and their seals and possible binding in either joint. Any detected problems require that the front propeller shaft receives replacement. When installing the propeller shaft mount it to the transfer case flange by placing the coned CV Joint end in its correct position. Position the differential flange to the propeller shaft while checking for damage or wear in any of the propeller shaft-to-flange bolts. Follow this step by treating the bolt threads with gm p/n 12345493 (Canadian P/N 10953488) threadlocker which needs 10 minutes of curing time. Clean the propeller shaft flange threads with denatured alcohol and apply threadlocker gm p/n 12345493 (Canadian P/N 10953488) before allowing it to cure for ten minutes. Tighten the propeller shaft CV Joint-to-differential flange bolts with crescent washers starting from bolt number 1 through 6 in proper order to 30 nm (22 ft. Lbs.). The procedure for cleaning and threadlocking the propeller shaft-to-flange bolts must be repeated before installing the front propeller shaft coupler-to-transfer case flange bolts while placing crescent washers and following bolt sequence (1-6) for tightening up to 30 nm (22 ft. Lbs.). Install the heat shield onto the propeller shaft while checking for any movement between the CV Joint and propeller shaft tube before lowering the vehicle.