Bulletin No.: 12-01-37-001G

Service Bulletin

Date: July, 2024

INFORMATION
Subject:

Information on Refrigerant (R1234yf) for A/C Service

Models:

2025 and Prior GM Passenger Cars and Light/Medium Duty Trucks
2022-2025 BrightDrop Van Models
Equipped with R1234yf Refrigerant

Attention:

This bulletin also applies to any of the above models that are imported
from North America.

This bulletin has been revised to add the 2024-2025 Model Years, BrightDrop models,
first Important statement, update hyperlinks to external websites, and to include
additional refrigerant recovery and recharging equipment that has been recently
approved for use. Please discard Bulletin Number 12-01-37-001F.
Product Description
Important: This technical service bulletin (TSB) can
only be completed by certified repair facilities who have
met all specific training, tool and equipment requirements pertaining to the vehicle Brand and Model
serviced. Repairs must be performed by a technician
who has successfully completed the required training.
R1234yf is an environmentally friendly refrigerant that
has a 99.7% lower Global Warming Potential (GWP)
than R134a. The refrigerant is considered mildly
flammable and has thermodynamic properties similar to
R134a. It is the industry accepted solution for a low
GWP refrigerant. R1234yf systems require the use of
specific A/C compressor oils.
Note: Please reference the A/C Refrigerant Charge
Label on vehicles for proper refrigerant identification
and system charge capacity.

Revised Service Procedures for R1234yf
Important: R1234yf, like R134a, is heavier than air and
can accumulate in low lying areas like service pits –
make sure proper ventilation is always available. As
with all refrigerants, always work in a well-ventilated
area and never release refrigerants into the atmosphere.
General information for service managers and technicians relating to R1234yf:
• Technicians repairing or servicing motor vehicle air
conditioning (MVAC) systems in the U.S. must be
trained and certified by an EPA approved organization. Certification is obtained by passing an EPA
approved examination. https://www.epa.gov/mvac/

Copyright 2024 General Motors. All Rights Reserved.

section-609-technician-training-and-certificationprograms. ASE Refrigerant Recovery and
Recycling Certification is acceptable. Email tech
name, ASE, EPA, or MACS certification number
and Parts Dealer Code to [email protected] to be entered into the
database to allow ordering of R1234yf and R134a.
Note: As of January 2018, R1234yf and R134a
requires the tech name, ASE, EPA, or MACS certification number and Parts Dealer Code to [email protected] to be entered into the database
to allow ordering of R1234yf and R134a.
• In Canada, provincial regulations require that all
motor vehicle air conditioning service technicians
must be trained and certified.
• R1234yf systems require the use of specific A/C
compressor oils. Refer to HVAC/Specifications/
Adhesives, Fluids, Lubricants, and Sealers in
service information (SI) for proper type and usage.
• Vehicles equipped with R1234yf refrigerant
systems have:
− Unique low and high side service fittings.
− Most vehicles using R1234yf will also have an
Internal Heat Exchanger (IHX).
− SAE J2842 compliant evaporator cores.
• Impacted service procedures for R1234yf
equipped vehicles (Refer to SI for details):
− Refrigerant Recovery and Recharge
− Leak Test
− Evaporator Cores

Page 2

July, 2024

− Internal Heat Exchanger

Tools and Equipment for R1234yf
Specific tools and equipment are required to service
vehicles equipped with R1234yf. Refer to the manufacturer’s owner manual for information about operation
and use of the equipment.
Important: Some equipment requires 'Product Activation' within 30 days of the machine's initial startup.
Refer to the machine’s start-up guide or operational
manual and follow any on-screen instructions to
complete the on-line registration and product activation
process.
• All GM-approved refrigerant recovery and
recharging equipment have the following features:

Bulletin No.: 12-01-37-001G
− Fully automatic system with built-in refrigerant
identifier/gas analyzer
− 5” touch screen display
− Integrated thermal printer
− Status light visible from long distance
− 1-year parts and labor warranty

• (DISCONTINUED) GE-50300 or GE-50300-A
Recovery/Recycle/Recharge Machine for R1234yf
A/C Systems:
− Released to dealers and industry in early 2010’s
− Still approved for A/C Service and warranty
repairs (claims)
• GE-50957 Contaminated Refrigerant Recovery
Machine:

-

Certified to SAE J2843 as required by the EPA.

-

Performs gas analysis prior to gas recovery or fill
with recovery/fill lockout if gas is contaminated
( 98% R1234yf)

-

VIN input is required. VIN retrieved via integrated
VCI cable connected to vehicles OBD2 connector
or manually entered.

− To be used with refrigerant recovery cylinders
that meet DOT 4BA and TC certification. The
recovery cylinders must have:

-

Integrated data recorder with printer.

⇒

• Records and prints VIN, pressures, temperature,
recovered/charged amount, gas analysis results
and encrypts into a warranty code.

⇒

• Warranty code is required to be entered into the
comment field of claim for warranty
reimbursement.
• (NEW) GM ArcticPRO (Mahle) ACX2286 R1234yf
Refrigerant Handling System https://gmglobaltools.com/item-detail.aspx?
itemId=131460055&type=equipment
− Fully automatic system with built-in refrigerant
identifier/gas analyzer
− 7” touch screen, WiFi, Bluetooth, USB port,
wireless VCI-to-DLC adapter, automatic
software updates, and can also be controlled by
available Apple iOS and Android
− Integrated thermal printer, and also has shop/
dealership network printing capabilities
− Exceptional Serviceability by way of hinged
Service door, dedicated Service phone number,
and 2-year parts and labor warranty
• (NEW) ECO Next One HFO-1234yf A/C Recycling
Service Station https://gmglobaltools.com/itemdetail.aspx?itemid=137550055&type=equipment

− Certified to SAE J2851 as required by EPA.
− Required for recovery of contaminated refrigerant systems.

Vapor/Liquid “Y” valve with 1/4” MFL fittings.

Liquid Level Switch w/ Brad Harrison
Connection.
• GE-50078 Electronic Refrigerant Leak Detection
for R1234yf (and R134a):
− Certified to SAE J2913 for use on R1234yf
systems (certified to SAE J2971 for R134a
systems).
− SAE J2843 certified equipment (GE-50300)
requires a SAE J2913 leak detector to perform
the mandated gross leak check.
• GE-50744 R1234yf PAG Oil Injection Hose:
– To replace PAG oil in R1234yf systems with beltdriven AC compressors. (use with GE-45037 and
the oil specified in the service manual).
• GE-45268-130 R1234yf Fitting Kit - Refrigerant
Flush Kit:
– Required to adapt GE-45268 Flushing Kit to
R1234yf.

Recovery Cylinders for Contaminated R1234yf
Refrigerant
Recovery cylinders that are commercially available and
recommended for use with GE-50957.

Bulletin No.: 12-01-37-001G

July, 2024

Page 3

Commercially Available DOT 4BA/ TC Certified Recovery Cylinders w/ Liquid Level Switch & Valve w/ ¼” MFL fittings
(required for GE-50957)
Cylinder P/N

Company

Phone Number

Website

62011/62012

Mastercool

973-252-9119

www.mastercool.com

CRX430TS

CPS

800-277-3808 (U.S.)

www.cpsproducts.com

877-776-8486 (Canada)
17605

Robinair

800-533-6127

www.robinair.com

95012

Yellow Jacket

800-769-8370

www.yellowjacket.com

*see website for local distributors

United States - Recovery cylinder labeling
requirements for R1234yf contaminated refrigerant.

2899219

2899218

1. Print “CONTAMINATED REFRIGERANT- DO NOT
USE – MUST BE RECLAIMED or DESTROYED
by an EPA authorized facility” label (shown above)
and apply to cylinder with clear packing tape.
When printing this label, adjust your printer to
create a 20 mm letter height (20 mm letter height
required by SAE J2851).

2. Remove the DOT transportation tag (pictured
above) from an R1234yf source cylinder and install
on the cylinder (using a wire tie or tape on with
clear packing tape) that contaminated R1234yf will
be stored and transported in.
3. If transport tag from a R1234yf source cylinder
(step 2) is not available, using a color printer or red
paper, print and install (with clear packing tape) the
label on the cylinder (shown above). When printing
this label, adjust your printer to create a 4.5-inchwide label (the ISO symbol portion of the label is
required to be 4" x 4").

Page 4

July, 2024

Canada - Recovery cylinder labeling requirements
for R1234yf contaminated refrigerant

Bulletin No.: 12-01-37-001G

• General Motors will reimburse only the R1234yf
refrigerant that is actually used (figured by the
difference from recovered and charged amount on
the printed ‘Vehicle Data’ summary).
• Refrigerant R1234yf must be billed out in the parts
field of the transaction, using a quantity of 1 for
every 10 grams used (difference between the
amount recovered and charged shown on the
printed summary from the refrigerant recovery and
recharge equipment). Example: 0.600 kg charged
- 0.390 kg recovered = 0.210 kg used. This translates to 210 grams. 210 divided by 10 = 21 (the
amount to be entered in the part quantity field).

2899221

Use a color printer or red paper to print the Canadian
WHIMS label (shown above) and attach printed label to
R1234yf contaminated recovery cylinder with clear
packing tape. When printing this label, adjust your
printer to create a label sized 7.25 inches wide by
8.50 inches high.

Parts Information
Part Number

Description

19260234 (U.S.)

R1234yf Refrigerant (supplied in
4.5 kg cylinders)

19260235 (Canada)
88864127 (U.S.)
88864128 (Canada)
19540212 (U.S. and
Canada)

Dye, R1234yf Refrigerant System
(with Belt-Driven Compressors
and PAG Oil)
Dye, R1234yf Refrigerant System
(with Electric Compressors (EV)
and POE Oil)

Warranty Information
Warranty Administration Policy for R1234yf equipped
Vehicles:
• Printed summary of completed repair from the
refrigerant recovery and recharge equipment is
required to be physically attached to each repair
order.
• Warranty Code from printed repair summary is
required to be entered in the “comment field” of
warranty claim (warranty claims without the
warranty code in the comment field are subject to
debit).

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job
properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.

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