OEM 2001 GMC Jimmy Crankshaft Seal

2001 GMC Jimmy Parts Questions & Experts Answers

• Q: How to replace the rear crankshaft seal on 2001 GMC Jimmy?

  A: Replace the crankshaft rear oil seal through this process: first remove the Transmission Assembly and engine Flywheel, and then use a suitable tool to extract the seal from its housing through the access notches using gentle force. Rinse away any existing seal alongside all debris in the area before moving forward. A small quantity of tidy engine oil (2 to 3 drops) should be applied evenly between the crankshaft rear oil seal housing bore and the outside diameters of the engine Flywheel pilot flange and Flywheel locator pin. Also apply the oily drops to the surface area which will receive the Crankshaft Seal. Check the j 35621-b rear main seal installer (J 35621-B) flange for surface flaws while removing minimal damage with fine emery cloth but avoid applying oil near the seal lip surface. Use clean engine oil drops of 2 to 3 for the outside diameter of the crankshaft rear oil seal strip before installing it onto the rear crankshaft surface. Place the crankshaft rear oil seal on the j 35621-b tool before fitting it to the crankshaft end. Once the tool bolts achieve modest tension apply the tool by hand. Proper alignment is critical; position the seal with precise squareness against the housing while achieving a nearly complete flush condition. Use clockwise rotations of the j 35621-b wing nut to seat the seal inside the housing bore until resistance builds against the bottom of the bore. Turn the wing nut counterclockwise to free the tool which lets you remove j 35621-b from the crankshaft. Clean away any remaining engine oil with a new rag before you reinstall the engine Flywheel together with the Transmission Assembly.