Thermostat
FCA US LLC
Reference: 26B

Service Procedure [Continued]
37.

Reconnect the high temp auxiliary coolant pump
inlet hose from the water pump housing.

38.

Attach the three wiring harness retainers from the
water pump.

39.

Connect the water pump to transmission heater
hose and lower radiator hose.

40.

Connect the heater supply and return hoses.

41.

Position the A/C compressor into place and install
the nuts, bolt, mounting studs and tighten the bolts
28N∙m (21ft. lbs.).

42.

Connect the A/C compressor wire harness
connector and attach the wire harness retainers.

43.

Install the A/C line retainer securing the A/C lines to the front of the engine.

44.

Install the serpentine belt on the water pump.

45.

If equipped, reposition the air reservoir into place and tighten bolts to 20N∙m (15ft. lbs.).

46.

If equipped, install the front air dam.

47.

If equipped, install the front skid plate.

48.

Lower the vehicle.

49.

Install the left front wheel and wheelhouse splash shield.

50.

Install the left front wheel and tire assembly and tighten lug nuts to 176N∙m (130ft. Lbs.).

51.

Connect the negative battery cables from the 12volt battery and the auxiliary battery and disconnect the ISD
electrical connector (Figure 1).

52.

Install the module assembly fasteners.

53.

Connect the PCM electrical connectors.

54.

Install the front turbocharger wastegate solenoid.

55.

Install the clean air hose tube bolts and the clean air hose.

56.

Install the air cleaner resonator and tighten the clamps.

57.

Engage the wire harness retainers

WATER
PUMP SEAL

Figure 4 – Water Pump Seal

Strictly respect STELLANTIS Group safety, cleanliness, and environmental instructions for any intervention.
Document exclusively reserved for dealer information. Internal distribution to be ensured by dealer.
Reproduction forbidden without the written agreement of STELLANTIS Group. (C) 2024 STELLANTIS Group. All Rights Reserved

5/8

CUSTOMER SATISFACTION NOTIFICATION
NORTH AMERICA

Thermostat
FCA US LLC
Reference: 26B

Service Procedure [Continued]
58.

Connect the Mass Airflow (MAF) sensor/Intake Air Temp (IAT) sensor wire harness connector.

59.

Install the engine cover.

60.

Refer to the Mopar Essential Tools and Service Equipment Tool, UView Airlift™ Cooling System Refill 399550000 , or equivalent, and follow tool's operating manual for specific assembly steps.

61.

Choose an appropriate adapter cone that will fit the vehicle's radiator filler neck or reservoir tank.

62.

Attach the adapter cone to the vacuum gauge.

63.

Make sure the vacuum generator/venturi ball valve is closed and attach an airline hose (minimum shop air
requirement of 80 psi (5.5 bar) to the vacuum generator/venturi.

64.

Position the adaptor cone/vacuum gauge assembly into the radiator filler neck or reservoir tank. Ensure that
the adapter cone is sealed properly.

65.

Connect the vacuum generator/venturi to the positioned adaptor cone/vacuum gauge assembly.

66

Open the vacuum generator/venturi ball valve.
NOTE: Do not bump or move the assembly as it may result in loss of vacuum. Some radiator overflow
hoses may need to be clamped off to obtain vacuum.

67.

Let the system run until the vacuum gauge shows a good vacuum through the cooling system. Refer to the
tool's operating manual for appropriate pressure readings.
NOTE: If a strong vacuum is being created in the system, it is normal to see the radiator hoses
collapse.

68.

Close the vacuum generator/venturi ball valve.

69.

Disconnect the vacuum generator/venturi and airline from the adaptor cone/vacuum gauge assembly.

70.

Wait approximately 20 seconds, if the pressure readings do not move, the system has no leaks. If the pressure
readings move, a leak could be present in the system and the cooling system should be checked for leaks and
the procedure should be repeated.

71.

Place the tool's suction hose into the coolant's container.
NOTE: Ensure there is a sufficient amount of coolant, mixed to the required strength/protection level
available for use. For best results and to assist the refilling procedure, place the coolant container at
the same height as the radiator filler neck. Always draw more coolant than required. If the coolant level
is too low, it will pull air into the cooling system which could result in airlocks in the system.

72.

Connect the tool's suction hose to the adaptor cone/vacuum gauge assembly.

Strictly respect STELLANTIS Group safety, cleanliness, and environmental instructions for any intervention.
Document exclusively reserved for dealer information. Internal distribution to be ensured by dealer.
Reproduction forbidden without the written agreement of STELLANTIS Group. (C) 2024 STELLANTIS Group. All Rights Reserved

6/8

CUSTOMER SATISFACTION NOTIFICATION
NORTH AMERICA

Thermostat
FCA US LLC
Reference: 26B

Service Procedure [Continued]
73.

Open the suction hose's ball valve to begin refilling the cooling system.

74.

When the vacuum gauge reads zero, the system is filled.

75.

Close the suction hose's ball valve and remove the suction hose from the adaptor cone/vacuum gauge
assembly.

76.

Remove the adaptor cone/vacuum gauge assembly from the radiator filler neck or reservoir tank.

77.

With heater control unit in the HEAT position, operate engine with container cap in place.

78.

After engine has reached normal operating temperature, shut engine off and allow it to cool. When engine is
cooling down, coolant will be drawn into the radiator from the pressure container.

79.

Add coolant to the recovery bottle/container as necessary. Only add coolant to the container when the
engine is cold. Coolant level in a warm engine will be higher due to thermal expansion. Add necessary
coolant to raise container level to the COLD MINIMUM mark after each cool down period.

80.

Once the appropriate coolant level is achieved, attach the radiator cap or reservoir tank cap.

81.

Start and warm the engine. Check for coolant leaks.

82.

Install the coolant bottle cap.

83.

Install the modification label.

Install the Authorized Modifications Label:
Type or print (with a ballpoint pen) the
necessary information shown in Figure
5 onto the Authorized Modifications
Label. Then attach the label near the
VECI label.

Figure 5 – Authorized Modifications Label

Strictly respect STELLANTIS Group safety, cleanliness, and environmental instructions for any intervention.
Document exclusively reserved for dealer information. Internal distribution to be ensured by dealer.
Reproduction forbidden without the written agreement of STELLANTIS Group. (C) 2024 STELLANTIS Group. All Rights Reserved

7/8

CUSTOMER SATISFACTION NOTIFICATION
NORTH AMERICA

Thermostat
FCA US LLC
Reference: 26B

Service Procedure [Continued]
84.

Complete Proof of Correction Form for California Residents:
This recall is subject to the State of California Registration Renewal/Emissions Recall Enforcement
Program. Complete a Vehicle Emission Recall Proof of Correction Form (Form No. 81-016-1053) and
supply it to vehicle owners residing in the state of California for proof that this recall has been
performed when they renew the vehicle registration.
Process Steps to obtain the California Proof of Correction form:
a. Access the “DealerCONNECT” website.
b. Select the “Service” tab.
c. Under the “Publications” heading, select the “ePublishing” link.
d. Sign in using your Dealer Code and Password.
e. Select the “Proof of Correction form”.

85.

Return the vehicle to the customer.

Strictly respect STELLANTIS Group safety, cleanliness, and environmental instructions for any intervention.
Document exclusively reserved for dealer information. Internal distribution to be ensured by dealer.
Reproduction forbidden without the written agreement of STELLANTIS Group. (C) 2024 STELLANTIS Group. All Rights Reserved

8/8

This notice applies to your vehicle,

CUSTOMER SATISFACTION NOTIFICATION
Thermostat

[Model Year and Model]
VIN XXXXXXXXXXXXXXXXX

26B

LOGO

VEHICLE PICTURE

Dear [Name],
At FCA US LLC, we recognize that the success of our business depends on the satisfaction of
our customers. We are constantly monitoring the quality of our products and looking for
opportunities to improve our vehicles even after they are sold. Because your long-term
satisfaction is important to us, we are contacting you on important improvements we would
like to make to your vehicle [1]. This will be done at no charge to you.
We are recommending the following improvements be performed on certain [2022 – 2024
Model Year (WS) Wagoneer/Grand Wagoneer] vehicles equipped with a 3.0L GMET6 engine.
WHY DOES MY VEHICLE NEED REPAIRS?
The thermostat ball valve drive pin on your vehicle’s engine may fail due to contamination.
This condition can cause the thermostat to fail in a closed position which will prevent
coolant flow to the radiator and may cause the engine to overheat.

YOUR SCHEDULING OPTIONS
1. RECOMMENDED OPTION
Call your authorized Chrysler /
Dodge / Jeep® / RAM Dealership
2. Call the FCA Recall Assistance
Center at 1-800-853-1403. An
agent
can
confirm
part
availability and help schedule an
appointment.
3. Visit recalls.mopar.com, scan the
QR code below, or download the
Mopar Owner’s Companion App.

QR Code

HOW DO I RESOLVE THIS CUSTOMER SATISFACTION NOTIFICATION?
FCA US will repair your vehicle free of charge (parts and labor). To do this, your dealer
will replace the thermostat. The estimated repair time is about 4 hours. In addition, your dealer
will require your vehicle for proper check-in, preparation, and check-out during your visit,
which may require more time. Your time is important to us, so we recommend that you
schedule a service appointment to minimize your inconvenience. Please bring this letter with
you to your dealership.
TO SCHEDULE YOUR FREE REPAIR,
CALL YOUR CHRYSLER, DODGE, JEEP OR RAM DEALER TODAY
CALIFORNIA RESIDENTS
The State of California requires the completion of this emission recall repair prior to vehicle
registration renewal. Your dealer will provide you with a Vehicle Emission Recall Proof of
Correction Form after the Customer Satisfaction Notification service is performed. Be sure to
save this form since the California Department of Motor Vehicles may require that you supply
it as proof that the Customer Satisfaction Notification has been performed.
In order to ensure your full protection under the emissions warranty provisions, it is
recommended that you have your vehicle serviced as soon as possible. Failure to do so could
be determined as lack of proper maintenance of your vehicle.

Get access to recall notifications,
locate your nearest dealer, and more
through this website or Mopar
Owner’s Companion App. You will be
asked to provide your Vehicle
Identification Number (VIN) to
protect and verify your identity.
DEALERSHIP INSTRUCTIONS
Please reference CSN 26B.

WHAT IF I ALREADY PAID TO HAVE THIS REPAIR COMPLETED?
If you have already experienced this specific condition and have paid to have it repaired, you
may visit www.fcarecallreimbursement.com to submit your reimbursement request online. [2]
Once we receive and verify the required documents, reimbursement will be sent to you within
60 days. If you have had previous repairs performed and/or already received reimbursement,
you may still need to have the repair performed.
We apologize for any inconvenience, but are sincerely concerned about your satisfaction.
Thank you for your attention to this important matter.
Customer Assistance/Field Operations
FCA US LLC

Mr. Mrs. Customer
1234 Main Street
Hometown, MI 48371

[1] If you no longer own this vehicle, please help us update our records. Call the FCA Recall Assistance Center at 1-800-853-1403 to update your information.
[2] You can also mail in your original receipts and proof of payment to the following address for reimbursement consideration: FCA Customer Assistance, P.O. Box 218004, Auburn Hills, MI 48321-8007, Attention: Recall Reimbursement.