HFV6 Engine Misfire On AFM Cylinders 2 or 5 – 2021 Cadillac Chevrolet GMC

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NHTSA ID Number: 10202400

Manufacturer Communication Number: PIP5824

Summary

This Preliminary information communicates a possible issue with the active fuel management rockers causing a misfire and the correction for this concern.

 


Condition

A 2021 vehicle equipped with a HFV6 Gen2 engine with AFM may be brought into the dealership with misfires on cylinder 2 or 5.

This could be misfire all the time or start after an AFM event that may or may not go away.

 

Cause

We have determined there is an issue with some rockers / SRFF’s on the vehicles within the breakpoints listed above.

 

Parts Information

Description Part Number QTY.
Switching valve rocker arm 12666601 4
Dual Feed Hydraulic Lash Adjuster 12690246 4

 


8 Affected Products

Vehicles

MAKE MODEL YEAR
CADILLAC CT5 2021
CADILLAC XT5 2021
CADILLAC XT6 2021
CHEVROLET BLAZER 2021
CHEVROLET CAMARO 2021
CHEVROLET COLORADO 2021
GMC ACADIA 2021
GMC CANYON 2021

 


1 Associated Document

Manufacturer Communications

Bulletin No.: PIP5824
Published date: 09/22/2021

https://www.nhtsa.gov/recalls?nhtsaId=10202400

MC-10202400-9999.pdf 100.326KB

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“This site contains affiliate links for which OEMDTC may be compensated”
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OBDCAR AFM/DFM Disabler Active Fuel Management AFM Disable Device Compatible with V6 & V8 GM Motors
  • Compatible with V6 / V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.
  • OBDCAR AFM/ DFM Disabler allows your V6/ V8 GM vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders.
  • Fast and easy setup; simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM/DFM system.
  • Will not reprogram your factory ECU, unplug it to return to factory settings.
  • Please confirm the compatibility before ordering it.
SaleBestseller No. 2
AFM Disabler Active Fuel Management Delete Disabler AFM/DFM Disabler Compatible with V6 & V8 GM Motors AFM Disabler 5.3 Silverado (Chevy GMC Sierra GMC Yukon Cadillac Escalade etc)4.3L 5.3L 6.0L 6.2L
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SaleBestseller No. 3
OBDDFM Active Fuel Management AFM/DFM Disable Device, Compatible with GM V8 V6 Engine
  • AFM/DFM Disabler Compatibles with most V6 & V8 GM Motors.
  • Keep your V6 or V8 GM motors to run in full cylinder mode at all times.
  • Just plug it into your vehicle's OBD-II port and it will immediately start working to eliminate the AFM/DFM system.
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  • Please verify if your model is appropriate prior to making a purchase.
Bestseller No. 4
OBDAFM Active Fuel Management Disabler Device, AFM/DFM Disabler Compatible with Most GM V6 & V8 Motors
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  • Plug and play, install without any tools. Pls unplug the OBDAFM Device if it's not used for a long time.
  • Leaves no trace, Unplug it to return to factory settings. This AFM Disabler does not reprogram your factory ECU.
  • When the device was plugged into the port, blue lights will flash in sequence and then turn off. It just indicated that the device was connected and working normally.
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AFM/DFM Disabler Active Fuel Management disable device Compatible with V6 & V8 GM Vehicles Fits for chevy 5.3 Silverado
  • This AFM Disabler Compatible with V6 / V8 GM active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.
  • Plug and play. No installation required, simply plug into your vehicle OBD-II port and it instantly begins working to eliminate the AFM system.
  • This AFM/DFM Disabler allows your V6 or V8 vehicle to run in full cylinder mode at all times, help your car get full power.Preventing the Active or Dynamic Fuel Management system from dropping cylinders or more shuddering.(Disable 4 cylinder mode on your car)
  • Unplug it to return to factory settings,Doesn’t reprogram the factory ECU.
  • Please confirm the compatibility before ordering it.
Bestseller No. 6
HHQ AFM/DFM Disabler Active Fuel Management Disable Device Compatible with V6 & V8 Gm Motors New Technology RA003
  • FULL POWER ALL THE TIME: The HHQ AFM/DFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active Fuel Management system from dropping cylinders.
  • Compatible with V6 / V8 General Motors (GM) active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.
  • PLUG & PLAY INSTALLATION: Simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM/DFM system.
  • WILL NOT VOID YOUR WARRANTY: Keep the factory ECU, not programming the ECU of the vehicle, and does not affect other functions of the vehicle, but the modified vehicle is cautious to buy.
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Bestseller No. 7
BENOWO AFM Disabler 5.3 Silverado AFM/DFM Disabler Active Fuel Management for V6 & V8 GM Motors Designed in USA (Chevy Tahoe Camaro Colorado Suburban GMC Sierra Yukon Cadillac Escalade etc.)
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  • [WIDE COMPATIBILITY]: Benowo AFM/DFM Disabler is compatible with a variety of General Motors' V6 and V8 engines equipped with AFM or DFM, includes cars, trucks, SUVs such as 5.3 silverado, 5.3 gmc sierra.
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  • [EASY TO USE]: No tools or mechanical ability needed. Simply plug the module into OBD-II port and it instantly disables the AFM or DFM system. Simply remove it if uninstallation is necessary.
Bestseller No. 8
AFM/DFM Disabler, Active Fuel Management AFM Disable Device RA003 Compatible with V6 V8 GM Motors (Chevy Silverado, GMC Sierra, Chevy Tahoe, Cadillac Escalade, GMC Yukon etc) 4.3L 5.3L 6.0L 6.2L
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  • 🚗【Compatible with a Wide Range of V6 & V8 General Motors Models】Designed to fit a variety of General Motors' V6 and V8 engines equipped with AFM technology. Note: This AFM/DFM Disabler is NOT currently compatible with 2019+ Silverado and Sierra models equipped with 5.3L / 6.2L motors and 10-speed transmissions.
  • 🚗【Easy Plug-and-Play Installation】Effortlessly upgrade your vehicle with our user-friendly design. Simply plug the AFM disabler into your vehicle’s OBD-II port for an instant performance boost without the need for complex tools or professional assistance.
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Bestseller No. 9
Qzucar AFM/DFM Active Fuel Management Disabler Compatible with V6/V8 GM Vehicles RA003
  • The Qzucar AFM/DFM Disabler allows your V6 or V8 vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders.
  • Fast and easy setup; simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM/DFM system.
  • Keep your engine stable when cycling between half-cylinder or full-cylinder operation.
  • The Qzucar AFM/DFM Disabler does not reprogram your factory ECU. Leaves no trace. Unplug it to return to factory settings.
  • Compatible with V6 and V8 GM active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.
Bestseller No. 10
Range Technology Plug & Play AFM/DFM Active Fuel Management Disabler for GM Vehicles RA003G (Green)
  • The Range AFM/DFM Disabler allows your V6 or V8 vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders.
  • Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns.
  • Range AFM/DFM Disabler keeps you in full power 100% of the time. | Simply plug into your onboard OBD-II port and it instantly begins working to eliminate the AFM/DFM system. | The power and control you need in any situation.
  • The Range AFM/DFM Disabler does not reprogram your factory ECU. | Leaves no trace. Unplug it to return to factory settings | Compatible with all V6 and V8 GM active or dynamic fuel management vehicles, includes cars, trucks, and SUVs.
  • Please check compatibility

Last update on 2024-07-04 / Affiliate links / Images from Amazon Product Advertising API

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