OEM Chevrolet Impala Transmission Pan

Chevrolet Impala Transmission Pan Parts and Q&A

• Oil Pan
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  Q: How to replace the transmission pan on Chevrolet Impala?

  A:

  The replacement process for the Oil Pan requires no grease on retained parts because other greases besides transjel (TM) j 36850 or its equivalent may alter fluid characteristics and cause shifting problems or filter blockage. Support the vehicle first and place a drain pan beneath the transaxle Oil Pan. Start by loosening the bolts attaching the Oil Pan at its front and sides while slowly breaking the rear ones loose. Apply a rubber mallet or screwdriver instead of force to prevent oil leakage by maintaining the Oil Pan and case mating surfaces intact. The process requires you to drain all fluid before you can remove the remaining bolts to extract the Oil Pan along with its gasket. Check the oil filter for metal grit and clutch facing material as well as engine coolant contamination. Also identify the source of possible contaminants. The Oil Pan flange must be replaced if it shows bent or distorted features because trying to straighten it will not work. The process requires checking Oil Pan bolt washers which need replacement if inversion is present while performing their installation. Dry both the case flanges and Oil Pan by using solvent then waiting for air drying during the procedure. Use solvent to cleanse Oil Pan gasket surfaces before air drying them until all old gasket material is fully eliminated. Set the new Oil Pan gasket along with the Oil Pan in position. Afterward install the Oil Pan bolts before you tighten them to 14 nm (10 ft. Lbs.). Lower the vehicle while filling the transaxle with dextron iii liquid but avoid excess fluid. Begin with the gear selector placed in park and start the engine at slow idle speed which should not exceed racing speed. Check the fluid amount and search for any signs of leakage while performing the inspection.