PIE0747D
Service Bulletin Details
Public Details for: PIE0747D
This engineering information (ei) is requesting information from technicians to perform the check list provided and contact the engineer listed regarding information to inform dealership personnel on elevated warranty being seen on a/c comp
Models from 2024
2024 CHEVROLET SILVERADO 1500 |
2024 GMC SIERRA 1500 |
Models from 2023
2023 CHEVROLET SILVERADO 1500 |
2023 GMC SIERRA 1500 |
Models from 2022
2022 CHEVROLET SILVERADO 1500 |
2022 GMC SIERRA 1500 |
Subject: Engineering Information - Information on Seized A/C Compressor Attention: Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is listed in the Global Warranty Management / Investigate History link (GWM/IVH). If the customer has not commented about this condition or the EI does not show in GWM/IVH, disregard the PIE and proceed with diagnostics found in published service information. THIS IS NOT A RECALL refer to Service Bulletin 04-00-89-053 for more details on the use of Engineering Information bulletins. This EI has been revised to add Important Statement and 2024 Model Year also update the Engine, Contact, and Warranty Information. Please discard PIE0747C. Brand: Chevrolet GMC Model: Model Year: VIN Breakpoint: from to from to Silverado 1500 New (RPO J22, VIN Digit 5 = A / D) 2022 2022 — — Silverado 1500 2023 2024 Sierra 1500 New (RPO J22, VIN Digit 5 = H / U) 2022 2022 Sierra 1500 2023 2024 Engine: Transmission: Equipped with 5.3L or 6.2L Engines (RPOs L84 or L87) ONLY — Involved Region or Country U.S. Dealers ONLY Condition The purpose of this EI is to inform dealership personnel on information for seized A/C compressors. Cause GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be used to "root cause" the customer's concern and develop/validate a field fix. Correction Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you must follow those applicable laws. If you encounter a vehicle with the above concern, perform the following steps contact the engineer listed below with your findings: Important: This engineering investigation will incorporate return parts if repairs are performed. These returned parts will be covered by the same policies as any parts on 100% return, and return of parts is a requirement for claim fulfillment. These parts could include, the compressor, the condenser, the refrigerant hose assembly, and the thermostatic expansion valve (TXV). All parts should be packaged and returned to the WPC. 1. Confirm if the A/C compressor is seized by examining the rubber portion of the compressor clutch/belt condition and the rotation of inner portion of the hub. Note: If the belt/rubber portion of clutch has damage or appears melted and the compressors inner hub does not rotate freely, the A/C compressor is seized. 2. If the compressor is seized, please gather the following information/complete the following steps: Questionnaires 1. What was the condition/timing that the issue was noticed? 1.1. Was the issue noticed at engine start or did it occur at some point while driving? 1 1.2. What were the operating conditions at the time of failure? (ex. Idle/warm-up, stopped at a stop light, 70 mph, stop & go traffic, etc.) 1.3. How long was the vehicle running prior to the failure? (Immediately or at start up? Shortly after start up? After significant driving? Turned off then occurred after restart?) 1.4. What were the HVAC operating conditions at the time of failure? (ex. A/C on or off, Auto temp setting at 72°F, low blower, etc.) 1.5. Any additional details available regarding the vehicle operation prior to the trip when the failure occurred? (ex. Driving/idling, HVAC settings, operation time, etc.) 2. Confirm the amount of refrigerant remaining in the A/C system. 2.1. Evacuate the A/C system and record the refrigerant amount recovered. 2.2. If the charge is low compared to expected vehicle charge, hold vacuum for 15 minutes and record any pressure increase to identify if there is a system leak. 2.3. If a system leak is identified, use SI to identify and record the suspected location of leakage. 3. Confirm the condition of the oil within the A/C compressor. 3.1. Remove the A/C compressor from the vehicle and drain the oil through the compressor oil plug into a container. Record the condition of oil such as color, amount of oil in grams or cc, foreign material presence, etc. Important: Retain the oil that was drained for return. 3.2. If the oil appears dark in color or has signs of foreign material, flush the A/C system and replace the desiccant/condenser filter and the TXV BEFORE installing the replacement A/C compressor and fill the system with a full oil charge per SI. Important: Retain these components with the oil that was drained and the failed A/C compressor for return. Components requested are; TXV, dessicant, oil, and/or condenser if those components are replaced. 4. Call the engineer listed below with your findings. Contact Information The Contact Information has been redacted. Please include the following information if leaving a message: – Technician name – Dealer name and phone number – Complete VIN and repair order (R.O) number On the repair order, document the date and time the call was placed (even if the engineer was not reached). If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI. Warranty Information If engineer was contacted or required information was provided, use: Labor Operation Description Labor Time 4488378* Engineering Information - Information on Seized A/C Compressor 4.0 Hrs. *This is a unique Labor Operation for bulletin use only. Version 5 Modified Released May 10, 2023 Revised June 05, 2023 - Updated the Subject, Condition and Warranty Information. Revised June 09, 2023 - Updated the Correction. Revised July 25, 2023 - Updated the Contact Information. Revised July 31, 2023 - Revised to add Important Statement and 2024 Model Year also update the Engine, Contact, and Warranty Information. 2