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Home >> Jeep >> 2022 >> Gladiator Mojave, Part Time T/Case Control, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (8HP75 Automatic Transmission (Service Information)) >> Diagnosis And Testing >> Preliminary >> Vehicle Is Disabled

Vehicle Is Disabled

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  1. Check for transmission fault codes using the appropriate scan tool.
  2. Check for cracked or leaking transmission cooler lines.
  3. Check the transmission fluid level and condition.
  4. With the transmission in the Park position, attempt to rotate driveshaft(s) to ensure transmission output shaft coupler/flange is secure.
  5. Check the transfer case operation (if equipped).
  6. Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
  7. Start the engine with the transmission in the Park position and allow the vehicle to idle for several minutes, shift the transmission into gear, and note following:
    1. If driveshaft turns but wheels do not, the problem is with the differential or axles.
    2. If driveshaft does not turn and transmission is noisy, turn off the engine. Remove the transmission oil pan and check for debris indicating an internal transmission failure. If debris is present, remove the transmission for repair. If the transmission oil pan is clear, remove the transmission and check for damaged flexplate, torque converter, transmission oil pump, or input shaft.
  8. Check the Transmission Control Module Assembly (TCMA), wiring, valve body, and solenoids (utilize fault codes to diagnose if available).
  9. Remove the support and lower the vehicle.
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