NHTSA ID Number: 10155058
Manufacturer Communication Number: PI1513F
Summary
This preliminary information bulletin provides a procedure for radiator and engine coolant thermostat replacement to eliminate coolant smell and/or a slight leak at the radiator.
20 Affected Products
Vehicles
CADILLAC | ESCALADE | 2015-2016 |
| CADILLAC | ESCALADE ESV | 2015-2016 |
| CHEVROLET | SILVERADO 1500 | 2014 |
| CHEVROLET | SILVERADO 2500 | 2015-2016 |
| CHEVROLET | SUBURBAN | 2015-2016 |
| CHEVROLET | TAHOE | 2015-2016 |
| GMC | SIERRA 1500 | 2014 |
| GMC | SIERRA 2500 | 2015-2016 |
| GMC | SIERRA DENALI | 2015-2016 |
| GMC | YUKON | 2015-2016 |
| GMC | YUKON XL | 2015-2016 |
Parts
| 1 | RADIATOR ASM | Refer to the electronic Parts Catalog (EPC), Group 01, for radiator parts information |
| 1 | OUTLET, W/PMP (W/THERMOSTAT) | 12674639
GM Genuine Parts 15-11125 (12674639) Water Pump Outlet Assembly with Thermostat
Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API |
| 3 | RETAINER, TRANS FLUID CLR PIPE FTG | 24205103
GM Genuine Parts 24205103 Multi-Purpose Retainer
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 |
Bulletin No.: PI1513F
Date: January, 2019
https://www.nhtsa.gov/recalls?nhtsaId=10155058
https://static.nhtsa.gov/odi/tsbs/2019/MC-10155058-9999.pdf
Bulletin No.: PI1513D
Date: Apr-2017
https://www.nhtsa.gov/recalls?nhtsaId=10114055
https://static.nhtsa.gov/odi/tsbs/2017/MC-10114055-9999.pdf
Bulletin No.: PI1513C
Date: Apr-2017
https://www.nhtsa.gov/recalls?nhtsaId=10114054
https://static.nhtsa.gov/odi/tsbs/2017/MC-10114054-9999.pdf
Bulletin No.: PI1513B
Date: Nov-2016
https://www.nhtsa.gov/recalls?nhtsaId=10138005
https://static.nhtsa.gov/odi/tsbs/2016/MC-10138005-9999.pdf
Bulletin No.: PI1513A
Date: Nov-2016
https://www.nhtsa.gov/recalls?nhtsaId=10138004
https://static.nhtsa.gov/odi/tsbs/2016/MC-10138004-9999.pdf
- Unsurpassed freeze protection and anti-boil performance outperforms industry standards
- Organic acid technology resists rust, scale & corrosion while protecting all cooling system metals (including aluminum)
- High-quality additives protect against leaks and won’t harm gaskets, hoses, plastics or original vehicle finish
- Pre-mixed orange formula is ready-to-use in a 50/50 ratio with deionized water to protect all modern engine components from winter freezing (-34F) and summer boiling (265F).
- 5 year/150,000 mile guarantee protects against engine failure caused by freeze-ups or boil-overs
- Unsurpassed freeze protection and anti-boil performance outperforms industry standards
- Organic acid technology resists rust, scale & corrosion while protecting all cooling system metals (including aluminum)
- High-quality additives protect against leaks and won’t harm gaskets, hoses, plastics or original vehicle finish
- Orange concentrate formula should be mixed with clean tap water or demineralized water at 50/50 ratio for temperatures -34 to 265F; 60/40 for -62 to 270F; and 70/30 for -84 to 267F
- 5 year/150,000 mile guarantee protects against engine failure caused by freeze-ups or boil-overs
- VERSATILE ENGINE COOLANT: This antifreeze + coolant is designed for use in all GM vehicles 1995 and newer requiring an orange organic acid technology (OAT) coolant. This item contains a bittering agent called Denatonium Benzoate.
- PROTECTS ENGINE: This antifreeze + coolant provides protection against rust and corrosion for all cooling system metals, including aluminum
- LONG-LASTING COOLANT: This antifreeze + coolant has a service life of up to 10 years/150,000 miles with a complete cooling system flush and fill
- BETTER FORMULA: Our antifreeze coolant solution is free of amines, phosphate, borate, nitrite and silicate
- EXCELLENT PERFORMANCE: This meets the performance requirements of ASTM D3306, D4985 and GMW3420, GM6277M
- 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
- PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
- DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford
, Chrysler, and GM vehicles that require an orange organic acid technology formula - GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 400,000 miles or 15 years.
- 50/50 PREDILUTED FOR QUICK TOP OFFS: Already prediluted to make topping off your cooling system a breeze
- ACDelco 10-101 DEX COOL (ORANGE)
- Contains A Bittering Agent
- OEM
Last update on 2026-05-27 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.
SEOCONTENT-START
Service Bulletin Bulletin No.: PI1513F
Date: January, 2019
PRELIMINARY INFORMATION
Subject: Coolant Smell and/or Slight Leak at Radiator
Models: 2015-2016 Cadillac Escalade Models
2014 Chevrolet Silverado 1500 (Plant Code G*) (without RPO NHT – Max Towing Pkg)
2014 Chevrolet Silverado 1500 (Plant Code F*, Z*)
2015-2016 Chevrolet Silverado, Suburban, Tahoe
2014 GMC Sierra (Plant Code G*) (without RPO NHT – Max Towing Pkg)
2014 GMC Sierra 1500 (Plant Code F*, Z*)
2015-2016 GMC Sierra, Sierra Denali, Yukon Models, Yukon Denali Models
Equipped with 4.3L, 5.3L or 6.2L Engine (RPOs LV1, LV3, L83 or L86)
2016 models: SOP to 15 Nov 2015
*For Build Plant Information See 11th Position of VIN
Attention: This PI also applies to any of the above models that may be Export from North America vehicles.
This PI has been revised to update the Warranty Information. Please discard PI1513E.
Condition/Concern
Some customers may comment that they may smell coolant while driving or outside the truck. This could include a coolant leak under the front of the truck.
Recommendation/Instructions
Technicians should start by inspecting the radiator for signs of leaks. Normally, signs of leaks can be found where the tubes attach to the headers.
4082319
4082322
This condition may be the result of excessive thermocycles within the cooling system caused by excessive cycling of the thermostat. These excessive thermocycles within the coolant system may cause the tubes to fatigue, crack and leak at the radiator headers. To correct this condition, a new thermostat has been designed that eliminates the thermostats excessive cycling.
If this condition is found, in addition to replacing the radiator, the engine coolant thermostat housing (w/thermostat) must also be replaced. Refer to Engine Coolant Thermostat Housing Replacement in SI, which is located in the Engine Heating and Cooling section.
Parts Information
Part Number Description Qty
Refer to the electronic Parts Catalog (EPC), Group
01, for radiator parts information RADIATOR ASM 1
12674639 OUTLET, W/PMP (W/THERMOSTAT) 1
24205103 RETAINER, TRANS FLUID CLR PIPE FTG 3
12346290 (US)
10953464 (Canada) ENGINE COOLANT 3
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor Operation Description Labor Time
4080838* Replace Radiator and Thermostat 5.2 hrs (Truck)
4.7 hrs (SUV)
Add Diagnostic Time 0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Note: For the condition covered in this bulletin, the causal part is the thermostat. Radiator replacement for this condition must include replacement of the thermostat and both covered under the terms of the Powertrain Limited Warranty.
Additional Keywords: Odor
SEOCONTENT-END
Hello,
I was recently informed that I have a leak in my radiator with the symptoms listed here.
I see there is a service bulletin (15829) for 5.3L and 6.2L engines. I have the 4.3L. Is the 4.3L not covered despite having the same issue?
You can check here if your vehicle has any open recalls or any other service programs https://my.gm.com/recalls