Page 45
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4LHD/4LHDX Application Manual
Powertrain Control Solutions
REV 1.1
2.3.6 Fluid Capacity
A universal bottom pan is provided with the PCS 4LHD/4LHDX. Approximate total uid capacity values are listed below.
Cooler size and cooler line lengths will alter these values.
• 8.4 L (8.8 qt) with 258 mm torque converter
• 10.8 L (11.4 qt) with 300 mm torque converter
2.3.7 Check Fluid Level
Proper uid level is vital to the operation of the transmission. An overll condition can be as detrimental as an under-ll.
With improper uid-level, uid may contact the rotating parts or the pump intake may become exposed, causing aeration,
possible overheating and erratic operation.
The transmission uid serves several functions, therefore it is imperative the uid supply be maintained appropriately. A ll
tube and dipstick must maintain the uid level above the pump suction port to prevent aeration of the oil. Aeration could
result in pump cavitation and erratic operation of the transmission. Aeration could also occur if the oil level is too high. The
uid could contact the rotating components within the transmission and result in erratic operation. In addition, overheating
or horsepower loss may occur. Fluid levels must be maintained within the recommended operating bands.
This procedure checks the transmission uid level, as well as the condition of the uid itself. Caution: Always use the
proper automatic transmission uid listed. Using incorrect automatic transmission uid may damage the vehicle.
Before checking the uid level, perform the following:
1. Start the engine and park the vehicle on a level surface. Keep the engine running.
2. Apply the parking brake and place the shift lever in PARK (P) or NEUTRAL(N).
3. Depress the brake pedal and move the shift lever through each gear range if available, pausing for about 3 seconds
in each range. Then, move the shift lever back to PARK (P) or NEUTRAL(N).
4. Allow the engine to idle 500–800 RPM for at least 1 minute. Slowly release the brake pedal.
5. Keep the engine running and observe the transmission uid temperature (TFT) using a scan tool or PCS software.
6. Using the TFT reading, determine and perform the appropriate check procedure. If the TFT reading is not within the
required temperature ranges, allow the vehicle to cool, or operate the vehicle until the appropriate TFT is reached.
Cold Check Procedure
Use the cold check procedure only as a reference to determine if the transmission has enough uid to be operated safely
until a hot check procedure can be made. The hot check procedure is the most accurate method to check the uid level.
Perform the hot check procedure at the rst opportunity. Use this cold check procedure to check uid level when the TFT
is between 27–32°C (80–90°F).
1. Start the engine and locate the transmission dipstick at the rear of the engine compartment, on the passenger’s side
of the vehicle.
2. Flip the handle up, and then pull out the dipstick and wipe the dipstick end with a clean rag or paper towel.
3. Install the dipstick by pushing it back in the dipstick tube all the way, wait three seconds and then pull it back out again.
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