PIE0733

Subject:
Engineering Information - A/C Compressor is Inoperable
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.
Brand:
Model:
Cadillac
XT5
Chevrolet
Blazer
Model Year:
VIN Breakpoint:
from
to
from
to
2022
2023
—
—
Engine:
Transmission:
—
—
Involved Region or Country
North America
Condition
Some customers may comment on the A/C compressor being inoperable.
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 a vehicle with a seized or noisy compressor, perform the following steps and contact one of the engineers listed below with your
findings.
1.
Confirm refrigerant charge amount remaining in A/C system.
1.1. Evacuate the A/C system and record the amount of refrigerant that was recovered.
1.2. If the charge is low compared to expected vehicle charge, hold the vacuum for 15 minutes and record any pressure increase to identify a system
leak.
1.3. If a system leak is identified, use SI to identify and record the suspected location for of leakage.
2.
Confirm the condition of the oil within the A/C compressor.
2.1. Remove the compressor from the vehicle and drain the oil through the compressor oil plug and inlet/outlet ports into a CLEAN container. Record
the condition of oil such as color, amount of oil in grams or cc, foreign material presence, etc.
Important: Please make sure to retain the oil from the failed compressor.
2.2. If the oil appears dark in color or has foreign material in it, flush A/C system per SI and replace the desiccant bag before installing the
replacement compressor and fill the A/C system with a full oil charge per SI.
Important: Please be sure to retain these components for return with failed compressor.
2.3. Pour the old compressor oil back into failed compressor and install inlet/outlet cover from new compressor onto failed compressor. Make sure
the drain plug is reinstalled and tight.
Contact Information
The Contact Information has been redacted.
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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
4488358*
Engineering Information - A/C Compressor is Inoperable
2.4 Hrs.
*This is a unique Labor Operation for bulletin use only.
Version
1
Modified
Released December 13, 2022
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