Information on Diesel Exhaust Fluid Pump is Unable to Build Pressure After Replacement – 2017-2022 Cadillac Chevrolet GMC

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NHTSA ID Number: 10205057

Manufacturer Communication Number: 20NA110

 

Summary

This service bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

 

 


61 Affected Products

Vehicles

MAKE MODEL YEAR
CADILLAC ESCALADE 2021
CADILLAC ESCALADE ESV 2021
CHEVROLET 4500HD 2021
CHEVROLET 5500HD 2021
CHEVROLET COLORADO 2016-2021
CHEVROLET CRUZE 2017-2019
CHEVROLET EQUINOX 2018-2019
CHEVROLET EXPRESS 2017-2021
CHEVROLET SILVERADO 1500 2017-2021
CHEVROLET SILVERADO 2500 2017-2021
CHEVROLET SILVERADO 4500HD 2019-2021
CHEVROLET TAHOE 2021
GMC CANYON 2016-2021
GMC SAVANA 2017-2021
GMC SIERRA 1500 2020-2021
GMC SIERRA 2500 2017-2021
GMC SIERRA DENALI 2017-2019
GMC TERRAIN 2017-2020
GMC YUKON 2021
GMC YUKON XL 2021

 


Condition

Some technicians may comment that after replacing the DEF pump, the pump will not build pressure and one or more of the following DTCs may set:

  • P20E8: Reductant Low Pressure
  • P249C: Excessive Time To Enter Closed Loop Reductant Injection Control

 

Information

If after replacing the DEF pump, the system is unable to build pressure, inspect for any leaks, loose connections or kinks in the supply line.

After performing an initial leak test three times, if low pressure is present, this may be because the DEF pump filter has dried out.

Allow the vehicle to sit overnight with the new pump and DEF fluid to re-saturate the DEF pump filter. In the morning, perform the leak test three additional times. The pump should now be able to build pressure.

 

Parts Information

No parts are required for this repair.

 



1 Associated Document

Manufacturer Communications

Bulletin No.: 20-NA-110
Date: August, 2021

https://www.nhtsa.gov/recalls?nhtsaId=10205057

MC-10205057-9999.pdf 516.631KB

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NHTSA ID Number: 10187757

Manufacturer Communication Number: 20NA110

 

Summary

This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: 20-NA-110
Date: January, 2021

https://www.nhtsa.gov/recalls?nhtsaId=10187757

MC-10187757-9999.pdf 512.948KB

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NHTSA ID Number: 10183168

Manufacturer Communication Number: 20NA110

 

Summary

This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: 20-NA-110
Date: October, 2020

https://www.nhtsa.gov/recalls?nhtsaId=10183168

MC-10183168-9999.pdf 53.764KB

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NHTSA ID Number: 10178270

Manufacturer Communication Number: 20NA110

 

Summary

This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: 20-NA-110
Date: June, 2020

https://www.nhtsa.gov/recalls?nhtsaId=10178270

MC-10178270-9999.pdf 509.803KB

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“This site contains affiliate links for which OEMDTC may be compensated”
Bestseller No. 1
Blue Def DEF002-2PK Diesel Exhaust Fluid, 2.5 Gallon, 2 Pack
  • One gallon of is used approximately every 300 miles
  • A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
  • When used in an SCR system will reduce the levels of NOx emissions of those engines
Bestseller No. 2
Blue Def DEF002-4PK Diesel Exhaust Fluid, 2.5 Gallon, 4 Pack
  • One gallon of is used approximately every 300 miles
  • A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
  • When used in an SCR system will reduce the levels of NOx emissions of those engines
  • Fit type: Universal
Bestseller No. 3
Bestseller No. 4
Prime Guard PRIM00250 DEF Diesel Exhaust Fluid, 2.5 Gallon Box
  • Prime Guard DEF is a safe, environmentally friendly solution for Selective Catalytic Reduction
Bestseller No. 5
ACDelco GM Original Equipment 10-4023 Diesel Exhaust Emissions Reduction (DEF) Fluid - 2.5 gal (Pack of 2)
  • Meets GM Original Equipment specifications to be approved for use in GM vehicles as well as in non-GM diesel vehicles that have an SCR (Selective Catalytic Reduction) system to meet regulated NOx emissions
  • High quality formula is made from high purity urea and deionized water. It contains no chemical additives or other components that could cause SCR system failure
  • Includes vented nozzle(s) that make pouring easy by helping to prevent glugging
  • Has 1 complimentary nozzle. Extra nozzles sold separately
Bestseller No. 6
ACDelco GM Original Equipment 10-4022 Diesel Exhaust Emissions Reduction (DEF) Fluid - 1 gal, white
  • Meets GM Original Equipment specifications to be approved for use in GM vehicles as well as in non-GM diesel vehicles that have an SCR (Selective Catalytic Reduction) system to meet regulated NOx emissions (Based on EPA certification testing. Your actual emissions will vary based on several factors including temperature, terrain, and driving conditions).
  • High quality formula is made from high purity urea and deionized water.
  • Meets API regulations and ISO 22241 standard for purity and concentration
  • Nozzles sold separately
Bestseller No. 7
AdBlue Diesel Exhaust SCR Fluid DEF LR072258, Original Equipment, Half-Gallon / 64oz Bottle, Compatible with Land Rover Discovery 5, Range Rover Sport, Velar, And Evoque, Diesel Vehicles Only
  • [𝗙𝗜𝗧𝗦] - Compatible with a range of BMW diesel model vehicles that use OE specification part # 83190441139 fluid. Compatible with select BMW 1, BMW 2, BMW 3, BMW 4, and BMW 5 models (see exact model code list below.)
  • [𝗟𝗘𝗔𝗞-𝗙𝗥𝗘𝗘] - Each bottle is topped with a special cap and neck sheath designed for screw-in use on the DEF fill port of BMW and other vehicles, meaning leak-free and mess-free filling on vehicles with screw-in style DEF fill ports.
  • [𝗢𝗘𝗠-𝗤𝗨𝗔𝗟𝗜𝗧𝗬] - Original Equipment Diesel Exhaust Fluid (DEF) 83190441139 made in Germany by AdBlue. This This SCR diesel exhaust NOx-reducing aqueous urea solution complies to ISO specification ISO 22241-1.
  • [𝗖𝗢𝗡𝗩𝗘𝗡𝗜𝗘𝗡𝗧] - Half-gallon/ 64oz (1.89-liter) size bottle provides ample fluid for regular replacement.
  • [𝗢𝗘-𝗥𝗘𝗙𝗘𝗥𝗘𝗡𝗖𝗘] - Meets OE Specifications. Compatible with BMW Group 83190441139, Land Rover LR072258, Jaguar T4N 12112, Mercedes-Benz A 000 583 0107, VW / Audi G 052 910 A2, Mazda 0000-AD-002, Peugeot / Citroen 1611328380.
Bestseller No. 9
(40 Pack) - BlueDEF 2.5 Gallon DEF002 - Diesel Exhaust Fluid Jug
  • 40 Individual 2.5 Gallon Jugs of BlueDEF Diesel Exhaust Fluid (100 Gallons)
  • One gallon of BlueDEF is used approximately every 300 miles
  • Vented nozzle helps reduce fluid glugging and improves flow rate
  • A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
  • Approved for use in all diesel SCR systems
Bestseller No. 10
BlueDEF Peak Platinum Diesel Exhaust Fluid 2.5 Gallon (2 Pack)
  • Ensures that your diesel engine operates at its best fuel efficiency by reducing NOx emissions. Helps to maintain optimum fuel economy and reduces fuel consumption
  • By reducing NOx emissions, this fluid helps to protect the Selective Catalytic Reduction (SCR) system from damage, which can lead to costly repairs
  • Helps to sustain the life of your SCR system by reducing deposits and buildup that can lead to clogging or malfunctioning of the system
  • Compatible with all diesel SCR systems, a versatile choice for a wide range of diesel engine users. Used in heavy-duty trucks, buses, and other diesel-powered vehicles
  • Meets or exceed the strictest OEM standards for quality and performance. Conforms to the ISO-22241-1 specification for DEF. An American Petroleum Institute (API) certified diesel exhaust fluid

Last update on 2024-05-03 / Affiliate links / Images from Amazon Product Advertising API

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