2022 Alfa Romeo Stelvio Transmission Jerking P0740 P2764

Owners of various 2022 Alfa Romeo Stelvio and other Stellantis vehicles may experience transmission issues such as jerking or slipping. This manufacturer communication, identified by NHTSA ID 10221097, provides detailed guidance for technicians on diagnosing and repairing these powertrain concerns, specifically focusing on the 62TE transmission, torque converter, flex plate, and pump bushing.

Symptoms

Drivers might notice their vehicle is experiencing "jerking/slipping" during operation. These symptoms are often accompanied by an illuminated Malfunction Indicator Lamp (MIL) and specific diagnostic trouble codes.

Fault Codes / DTCs

If your vehicle is exhibiting the symptoms described, a scan tool may reveal the following Diagnostic Trouble Codes (DTCs):

• P0740: Torque Converter Clutch Circuit Malfunction
• P2764: Torque Converter Clutch Pressure Control Solenoid Control Circuit Low

These codes, particularly when combined with jerking or slipping, frequently point to a torque converter issue.

Diagnosis and Trigger Conditions

This technical service bulletin outlines several diagnostic pathways depending on the observed symptoms:

• Transmission Bracket Fasteners: If the transmission bracket fasteners have been removed for servicing, they are considered one-time use and must be replaced.
• Flex Plate or Pump Bushing Damage: If a crack is found in the flex plate or the pump bushing has failed, technicians must inspect for the presence of both dowel pins in the engine block. These pins are crucial for aligning the transmission to the crankshaft. The dowel alignment holes in the transmission case should also be visually inspected for damage or elongation.
• Scored Pump Bushing: If the pump bushing is scored or damaged, but the dowel pin alignment holes are intact, the issue may be isolated to the pump assembly.
• Jerking/Slipping with DTCs P0740 or P2764: When these symptoms and codes are present, the TCC Solenoid operation should be checked. If the solenoid is functioning correctly, the codes strongly suggest a torque converter failure.

Repair Procedure Summary

Repair procedures vary based on the diagnosis:

• Transmission Bracket Fasteners: If removed, new fasteners (Part Number 06511385A$) must be used. Vehicles built prior to October 23, 2015, require Service Kit PN 68461214AA, which includes Transmission Isolator PN 68264483AA and Adaptation Bracket 68264479AA, along with Fastener Service Kit PN 68329056AA. Vehicles built on or after October 23, 2015, only require Fastener Service Kit PN 68329056AA.
• Damaged Dowel Pin Holes: If the dowel alignment holes in the transmission case are damaged or elongated, the entire transmission should be replaced. This prevents further damage from improper engine-to-transmission alignment.
• Scored Pump Bushing (Dowel Pins OK): If only the pump bushing is scored or damaged and the dowel pin alignment holes are acceptable, only the pump assembly needs to be replaced, not the entire transmission.
• Torque Converter Failure: If the TCC Solenoid is confirmed to be operating correctly and the vehicle still exhibits "jerking/slipping" with DTCs P0740 or P2764, the torque converter should be replaced.

Important Repair Considerations

Technicians are advised that certain fasteners, specifically Part Number 06511385A$, are for one-time usage only if removed from the transmission bracket. Reusing these fasteners is not recommended. Furthermore, if the transmission case's dowel alignment holes are found to be damaged or elongated, the transmission itself must be replaced. Attempting to repair or reuse a transmission with compromised alignment holes will lead to continued damage to the transmission, flex plate, or pump bushing due to improper engine-to-transmission alignment.

Required Parts

Depending on the diagnosis, the following parts may be required:

• Fasteners: Part Number 06511385A$ (one-time usage)
• Service Kit (for vehicles built prior to 10/23/2015): PN 68461214AA
  • Includes Transmission Isolator PN 68264483AA
  • Includes Adaptation Bracket 68264479AA
• Fastener Service Kit (for all affected vehicles): PN 68329056AA
• Replacement Transmission (if dowel pin holes are damaged)
• Replacement Pump Assembly (if pump bushing is scored and dowel pin holes are okay)
• Replacement Torque Converter (if TCC Solenoid is okay and DTCs P0740/P2764 are present)

Owner Action

If your 2022 Alfa Romeo Stelvio is experiencing transmission jerking, slipping, or if you have diagnostic trouble codes P0740 or P2764, it is recommended to have your vehicle inspected by a qualified service technician. They can perform the necessary diagnostic steps outlined in this manufacturer communication (NHTSA ID 10221097) to accurately identify the root cause and apply the correct repair. This will ensure the proper functioning and longevity of your transmission system.

NHTSA ID: 10221097