Loss of Power, Malfunction Indicator Lamp (MIL) Illuminated, Gauges Inoperative and/ or Multiple Warning Lights/Messages Displayed on Driver Information Center (DIC) – Multiple DTCs Set – 2019-2022 Chevrolet Malibu

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NHTSA ID Number: 10205560

Manufacturer Communication Number: 21NA220

 

Summary

This service bulletin provides a procedure to inspect and possibly repair terminals that may be damaged to correct customer concerns of Loss of Power, Malfunction Indicator Lamp (MIL) Illuminated, Gauges Inoperative and/or Multiple Warning Lights/Messages Displayed on Driver Information Center (DIC).

 

 


4 Affected Products

Vehicle

MAKE MODEL YEAR
CHEVROLET MALIBU 2019-2022

 


Condition

Some customers may comment on one or more of the following conditions:

  • Loss of power
  • MIL illuminated
  • Gauges dropping out
  • Multiple warning lights and/or messages

Technicians may find one or more of the following DTCs stored in the Engine Control Module (ECM):

– P0700, P150C, P15FD, P2544, P308D, U0073, U0101, U0129, U0140, U0146, U183A, U18D5, U18D7, U2413, U0121, U0100, U0401, U0131

 

Cause

This condition may be caused by high resistance on the HSCAN BUS circuits 2500/2501 between the Electronic Brake Control Module (EBCM) and the Power Steering Control Module (PSCM).

 

Correction

With the battery disconnected, verify the resistance of the HSBUS circuits across 2500, 2501 splitting the circuit at the X115 electrical connector. Refer to Master Electrical Component List in SI. Looking for any unwanted resistance (ex. 126.7 or something other than in the range of 120 ohms). If stray resistance is traced down to one of the module connector terminals, verify terminal tension and ensure there is no damage to the terminal. If the terminal is good, then apply dielectric grease to the terminals.

If the terminals are damaged or have poor terminal tension, replace with terminated leads at the suspect module connector and apply dielectric grease to the connector.

 

Parts Information

Description Part Number Qty
ACDelco Dielectric Lubricant (U.S.) 12377900 Loss of Power, Malfunction Indicator Lamp (MIL) Illuminated, Gauges Inoperative and/ or Multiple Warning Lights/Messages Displayed on Driver Information Center (DIC) – Multiple DTCs Set - 2019-2022 Chevrolet Malibu | small light 1
ACDelco Dielectric Lubricant (Canada) 10953529

 



1 Associated Document

Manufacturer Communications

Bulletin No.: 21-NA-220
Date: November, 2021

https://www.nhtsa.gov/recalls?nhtsaId=10205560

MC-10205560-9999.pdf 196.447KB

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“This site contains affiliate links for which OEMDTC may be compensated”
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