Special Coverage – Radiator Leak – 2014 Chevrolet Silverado & GMC Sierra

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Bulletin No.: 15829
Date: November 2016

Involved vehicles are identified on the Applicable Warranties section in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs.

Parts Information

Quantity	Part Name	Part No.
1	Radiator	84062175 No products found.
1	Water Pump Outlet (w/Thermostat)	12674639 GM Genuine Parts 15-11125 (12674639) Water Pump Outlet Assembly with Thermostat Repairs leaking thermostat housings GM-recommended replacement part for your GM vehicle’s original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function $76.97 Buy on Amazon Price incl. tax, excl. shipping Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
3	Transmission Fluid Cooler Pipe Retainer	24205103 GM Genuine Parts 24205103 Multi-Purpose Retainer recommended replacement part for your gm vehicle’s original factory component offering the quality, reliability, and durability manufactured to gm oe specification for fit, form, and function package dimensions: 2.54 h x 0.508 l x 2.54 w (centimeters) Fit type: Vehicle Specific $6.87 Buy on Amazon Price incl. tax, excl. shipping Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API
3	Engine Coolant (US)	12346290 No products found.
	Engine Coolant (Canada)	10953464

Note: Use the vehicle identification number (VIN) and the GM Electronic Parts Catalog (EPC) to determine which part to order.

Warranty Information

* For USA and Canada: Submit the dollar amount reimbursed to the customer in Net/Reimbursement. Submit $20.00 administrative allowance in Net/Admin Allowance.

** Submit $10.00 administrative allowance in Net/Admin Allowance.

Service Procedure

Note: For this particular condition, signs of leaks can be found where the radiator tubes attach to the radiator headers.

1. Verify that the radiator is leaking. Refer to Cooling System Leak Testing (L83, L86, LV1, LV3) in SI.
   • If the radiator is NOT leaking, no further action is required. Inform the customer that any additional diagnosis and repairs are not covered under this special coverage.
   • If the radiator is leaking, replace the radiator and the engine coolant thermostat. Refer to Radiator Replacement (L83, L86) and Engine Coolant Thermostat Housing Replacement (LV1, LV3, L83 with Thermostat) in SI.

Customer Notification

General Motors will notify customers of this special coverage on their vehicle (see copy of typical customer letter included with this bulletin).

Customer Reimbursement

Customer requests for reimbursement of previously paid repairs to correct the condition described in this bulletin are to be submitted to the dealer prior to or by November 30, 2017. See General Motors Service Policies and Procedures Manual, Sections 1.4 and 6.1.10, for courtesy transportation program details.

November 2016

This notice applies to your vehicle, VIN:_________________________________

Dear General Motors Customer:

As the owner of a 2014 model year Chevrolet Silverado LD or GMC Sierra LD, your satisfaction with our product is very important to us

This letter is intended to make you aware that some 2014 model year Chevrolet Silverado LD and GMC Sierra LD vehicles equipped with a 5.3L or 6.2L engine, may have a condition in which the cycling of the thermostat may result in stress fractures on the radiator, and may lead to coolant leaks.

Do not take your vehicle to your GM dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

What We Have Done: General Motors is providing owners with additional protection for the condition described above. If this condition occurs on your 2014 model year Chevrolet Silverado LD or GMC Sierra LD within 5 years of the date your vehicle was originally placed in service or 100,000 miles (160,000 km), whichever occurs first, the condition will be repaired for you at no charge. Diagnosis or repair for conditions other than the condition described above is not covered under this special coverage program.

What You Should Do: If you believe that your vehicle has the condition described above, repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to contact your GM dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.

Reimbursement: If you have paid for repairs for the condition described in this letter, please complete the enclosed reimbursement form and present it to your dealer with all required documents. Working with your dealer will expedite your request, however, if this is not convenient, you may mail the completed reimbursement form and all required documents to Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and required documents must be presented to your dealer or received by the Reimbursement Department by November 30, 2017, unless state law specifies a longer reimbursement period.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below.

Division	Number	Text Telephones (TTY)
Chevrolet	1-800-630-2438	1-800-833-2438
GMC	1–866–996–9463	1–800–462–8583
Puerto Rico – English	1-800-496-9992
Puerto Rico – Español	1-800-496-9993
Virgin Islands	1-800-496-9994

We are sorry for any inconvenience you may experience; however, we have taken this action in the interest of your continued satisfaction with our products.

Terry M. Inch
Executive Director
Global Connected Customer Experience

Enclosure
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