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Duramax LML Diesel Exhaust Fluid DEF Fluid Heater 2010 2012

Duramax LML Diesel Exhaust Fluid DEF Fluid Heater 2010 2012

Duramax LML Diesel Exhaust Fluid DEF Fluid Heater 2010 2012
GM terms the whole unit the "reservoir kit, emission reduction fluid tank". Due to EPA requirements, faults in the DEF system which cause codes to set may cause the vehicle to operate in derate mode limiting engine power and speed.

Replaces the following part numbers (and others): F01C600307, 5D1001L, 23379346, 22902619, 22783125, EM1206URH. Following is a brief description of the functions of the DEF system: The on-board DEF reservoir holds approximately 19 liters (5 gallons) of DEF - also known as reductant.

An ECM controlled pump within the reservoir supplies pressurized reductant to the DEF injector located upstream of the SCR. A smart DEF level sensor within the reductant reservoir sends the ECM a serial data message indicating reductant level. The DEF pressure sensor provides the ECM with a voltage signal proportional to the reductant pressure generated by the DEF pump.

The ECM varies the duty-cycle of the pump voltage to maintain reductant pressure within a calibrated range. In the normally de-energized state, the reductant purge valve directs reductant from the pump to the reductant injector.

When the ignition is turned OFF, the ECM energizes both the reductant purge valve and reductant pump for about 30 to 45 seconds in order to purge the supply line of reductant. The ECM also commands the reductant injector to 100 percent to prevent vacuum from forming during the purge process. Purging prevents the reductant from freezing in the pump or supply line to the reductant injector. The ECM energizes the reductant injector to dispense a precise amount of reductant upstream of the SCR in response to changes in exhaust NOx levels. Feedback from NOx sensors 1 and 2 allow the ECM to accurately control the amount of reductant supplied to the SCR. There are 3 reductant heaters, one heater in the reductant reservoir, one heater at the reductant pump, and one heater in the supply line to the reductant injector as reductant will freeze at temperatures below 0°C (32°F). The ECM monitors the reductant temperature sensor located within the reservoir in order to determine if reductant temperature is below its freeze point. If the ECM determines that the reductant may be frozen, it signals the Glow Plug Control Module (GPCM) to energize the reductant heaters. Reductant pump operation is disabled for a calibrated amount of time to allow the heaters time to thaw the frozen reductant. Once the thaw period expires, the ECM energizes the reductant pump to circulate warm reductant through the de-energized reductant purge valve and back to the reservoir. This is done to speed thawing. The ECM looks for an increase in the reductant temperature to verify that the reductant reservoir heater is working Before replacing the DEF / urea heater / reservoir assembly for a related code, please be sure to follow factory diagnostic procedures, paying special attention to the integrity of wiring and connectors to avoid unnecessary part replacement.

If a delay occurs that is longer than would normally be considered commercially acceptable, we will attempt to contact you. Please take a moment to read it.

Local auto parts stores will not pay your travel costs to return a part either. Applications We guarantee our parts to be as described by part number, picture, and verbiage.

While we do our best, vehicle applications, however, simply cannot be guaranteed. In most cases, we do not generate application lists. It is the nature of the auto parts business that, in rare cases, a part will not be correct for a certain vehicle even though it "should" fit. This may occur because of errors on application lists, mid-year production changes, changes to the vehicle since it was built, the fact that a car was not built for the US market, etc. If a part does not fit your vehicle, this does not mean the part is not as described. Problems can be solved much more easily when civility is kept intact. The item "Duramax LML Diesel Exhaust Fluid DEF Fluid Heater 2010 2012" is in sale since Wednesday, May 1, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Emission Systems\Other".

The seller is "accuratediesel" and is located in Bitely, Michigan. This item can be shipped worldwide.

  • Manufacturer Part Number: IM170006
  • Superseded Part Number: Urea reductant
  • Interchange Part Number: reservoir kit, emission reduction fluid tank
  • Other Part Number: Reservoir Kit level sensor temperature pressure
  • Brand: ATSLLC
  • Fitment Type: Direct Replacement
  • Warranty: 1 Year


Duramax LML Diesel Exhaust Fluid DEF Fluid Heater 2010 2012