NHTSA ID Number: 10193463
Manufacturer Communication Number: PIC6436
Summary
This Preliminary information communicates to technician’s if they have a low mileage vehicle with an Air Conditioning inoperative condition with a P0534 to inspect the Air Compressor for leak and the possible area of the leak. Once verified of the leak in the compressor area to replace the compressor for the repair.
1 Affected Product
Vehicle
Condition
No A/C, blows warm air when set to cold, Setting P0534
Condition typically happens under 500 miles. Before adding refrigerant / dye, put car on hoist and remove aero panel from front cradle.
Inspect the ACCM (Air Conditioning Compressor Module or sometimes called Air Conditioning and Drive Motor Battery Cooling Compressor), view the HV connector area for possible POE oil dripping off connector and the case bolt just above compressor.
Cause
Defective ACCM K118 Electric ACCM internal seal, Oil visually leaking above HV connector at case half, see image below.
SEOCONTENT-START
Bulletin No.: PIC6436
Published date: 04/21/2021
Preliminary Information
PIC6436 No A/C – A/C Blows Warm Air – DTC P0534
Models
Brand: Chevrolet
Model:
2021
Model Years:
VIN:
from to
All All
All
All
Transmissions:
Involved Region or Country
North America
Condition
Cause
No A/C, blows warm air when set to cold, Setting P0534
Condition typically happens under 500 miles. Before adding refrigerant / dye, put car on hoist and
remove aero panel from front cradle.
Cooling Compressor), view the HV connector area for possible POE oil dripping off connector and the
case bolt just above compressor.
Refer to pictures below for existing oil leak examples.
Defective ACCM K118 Electric ACCM internal seal, Oil visually leaking above HV connector at case
half, see image below.
Correction:
If this Concern is found continue to follow this document, if no leak is found continue with GSI
diagnostics.
Replace K118 Electric ACCM GSI (Global Service Information, formally eSI) Document ID: 4530406
Warranty Information
For vehicles repaired under the EV coverage, use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor Operation Description
Labor Time
4417140 ACCM replacement
Use Published Labor Time
Version History
Version 1
Modified 04/21/2021 – Created on.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: PIC6436
Published date: 04/21/2021
- One application of oil and fuel system UV leak detection dye
- For use in engine oil, transmissions, power steering systems and gas/diesel fuel systems
- Compatible with all weights of petroleum-based lubricant
- Helps locate leaks
- Professional grade
- Gasoline engine oil dye, 1 oz. bottle, 6 pack
- Produced with the highest grade materials
- Satisfaction ensured
- package height : 15.24 cm
- package length : 4.064 cm
- package width : 6.858 cm
- Product type : AUTO OIL
- Country of manufacture: United States
- FAST, ACCURATE LEAK DETECTION: Professional-grade, universal fluorescent dye quickly identifies leaks in automotive systems, reducing diagnostic time and eliminating guesswork
- PINPOINT EVEN THE SMALLEST LEAKS: High-visibility fluorescent dye circulates through the system and glows under UV light, revealing micro, hidden, and intermittent leaks fast
- PRODUCT DETAILS: Finds leaks in Oil, Fuel, ATF, and Power Steering Systems, Fluoresces Yellow/Green, Works with All Leak Detection Flashlights, Each bottle services 8 vehicles
- CLEAN, NO-MESS APPLICATION: Designed for use with syringe-style injectors, the twin-neck bottle eliminates guesswork and ensures accurate dosing; Helps reduce spills and overfilling, making it ideal for quick service and maintenance job
- INCLUDES DYE BOTTLE ONLY: Package contains UV dye bottle only - Injector, hose, and UV flashlight sold separately; Proudly Made in the USA
- Works Where Used Oil Makes Leaks Hard To See: Designed for real world oil conditions where dark, used fluid can make leaks easy to miss. When checked with a UV inspection flashlight, leak points show up clearly, even in dirty engine oil
- Precision Nozzle Keeps The Job Clean: Switch to the pointed nozzle cap when you are ready to use it. It gives you better control, helps avoid overuse, and keeps dye from dripping onto surrounding parts, tools, or engine surfaces
- Finds Small And Intermittent Leaks: Designed to help pinpoint micro leaks, slow leaks, and multiple leak points that are often missed during quick visual checks, especially in complex oil systems
- Made For Automotive Oil-Based Systems: Safe for engine oil, fuel systems, transmissions, ATF, power steering, and hydraulic systems. The dye circulates with the fluid to reveal leak sources without blocking or damaging oil lines
- Low Odor: No harsh chemical smell while you work. The 150ml size gives you more coverage per bottle, and a tamper-evident foil seal under the cap helps prevent leaks during shipping and shows the bottle is unopened when it arrives
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