Automatic Transmission - 4L60-E/4L65-E - Servicing: Diagnosis Chevrolet Silverado 1500 HD

Refilling & Inspecting

1. Coat the NEW filter seal with automatic transmission fluid.
2. Install the NEW filter seal into the transmission case. Tap the seal into place using a suitable size socket. (Scheme 141)
3. Install the NEW filter.
4. Install the oil pan and NEW gasket. see scheme 3
5. Install the oil pan bolts. see scheme 2 Tighten the bolts alternately and evenly to specification. See «TORQUE SPECIFICATIONS»(ref-154009-S29611689822003050100000).
6. If previously removed, install the range selector cable bracket and bolts. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(ref-154009-S29611689822003050100000).
7. Apply a small amount of sealant to the threads of the oil pan drain plug, if equipped.
8. Install the oil pan drain plug, if equipped. Tighten the plug to specification. See «TORQUE SPECIFICATIONS»(ref-154009-S29611689822003050100000).
9. Lower the vehicle.
10. Fill transmission to proper level with appropriate fluid. See «RECOMMENDED FLUIDS»(ref-154009-S32888305552003050100000) and «FLUID CAPACITIES»(ref-154009-S16530630992003050100000).
11. Check the COLD fluid level reading for initial fill only.
12. Inspect the oil pan gasket for leaks.

Scheme 141

Flow Test

Note. The Flow Test must be performed after the flush to ensure that all flushing solution and water is removed from the oil cooling system.

1. Disconnect the hose from the oil cooler pipe. Connect the oil cooler feed pipe, bottom connector, to the transmission for normal flow.
2. Clip the discharge hose (1) to an empty oil container. (Scheme 142)
3. Confirm the transmission is filled with automatic transmission fluid. See «FLUID CAPACITIES»(ref-154009-S16530630992003050100000) for correct fluid capacity.
4. Start the engine with the transmission in Park range and run for 30 seconds after fluid begins to flow from the discharge hose (1). A minimum of 2 qt (1.9 L) must be discharged during this 30 second run time.
5. If the fluid flow meets or exceeds 2 qts (1.9 L) in 30 seconds, connect the oil cooler feed pipe to the bottom connector on the transmission.
6. If fluid flow is less than 2 qt (1.9 L) in 30 seconds, perform the following diagnosis: Disconnect the transmission oil cooler and line flusher discharge hose (1) from the oil cooler return pipe. Disconnect the oil cooler feed pipe at the radiator. Connect the flusher discharge hose (1) to the oil cooler feed pipe, radiator end. Clip the discharge hose (1) onto the oil drain container. Start the engine with the transmission in Park range and run for 30 seconds after fluid begins to flow from the discharge hose (1). A minimum of 2 qt (1.9 L) must be discharged during this 30 second run time.
7. If the amount of transmission fluid flow remains less than 2 qt (1.9 L) in 30 seconds, inspect the oil cooler feed pipe, bottom connector, for restrictions or damage. If no condition is found with the feed pipe, bottom connector, inspect the transmission.

Scheme 142

Clean-Up

1. Disconnect the water supply hose from the transmission oil cooler and line flusher and bleed any remaining air pressure from the flusher tank.
2. Remove the fill cap from the flusher and return any unused flushing solution to its container. Rinse the flusher with water. DO NOT store the flusher with flushing solution in it.
3. After every third use, clean the flusher as described in the instructions included with the tool.
4. Dispose of any waste water/solution and transmission fluid in accordance with local regulations.