PI1513A

Bulletin No.: PI1513A
Date: Nov-2016
Subject:
Coolant Smell and/or Slight Leak at Radiator
Models:
2015 Cadillac Escalade Models
2015 Chevrolet Silverado, Suburban, Tahoe
2015 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)
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 remove the 2014 Model Year and update the Parts and Warranty Information. Please discard
PI1513.
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.
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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 toEngine
Coolant Thermostat Housing Replacement in SI, which is located in the Engine Heating and Cooling section.
Parts Information
Part Number
Description
Qty
84062175
RADIATOR ASM
1
12671393
OUTLET, W/PMP (W/THERM)
1
24205103
RETAINER, TRANS FLUID CLR PIPE FTG
3
12346290 (US)
ENGINE COOLANT
3
10953464 (Canada)
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
2.9 hrs
Add
Diagnostic Time
0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Additional Keywords: Odor
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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