17286: Service Update – Engine Control Module Torque Reduction – 2017 Cadillac CT6 Plug-in Hybrid Electric

#17286: Service Update – Engine Control Module Torque Reduction – (Sep 22, 2017)

Subject: 17286 — Engine Control Module Torque Reduction
Models: 2017 Cadillac CT6 Plug-in Hybrid Electric
Equipped with Collision Imminent Braking (RPO UGN)

Reference Number: N172090640 Release Date: September 2017
Revision: 00
Attention: This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. This bulletin will expire at the end of the involved vehicle’s New Vehicle Limited Warranty period.
Make Model Model Year RPO Description
From To
Cadillac CT6 Plug-in Hybrid Electric 2017 2017 UGN Collision Imminent Braking

Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs.

Condition On certain 2017 model year Cadillac CT6 Plug-in Hybrid Electric vehicles equipped with collision imminent braking (RPO UGN), the engine control module (ECM) does not receive the axle torque reduction command intended to assist with the collision imminent braking feature. In certain conditions when the collision imminent braking feature is engaged, there may be an increase in stopping time and distance.
Correction Dealers are to reprogram the ECM.

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PIT4811B: Hybrid No Crank With Multiple Diagnostic Codes – 2008-2013 Cadillac Chevrolet GMC

#PIT4811B: Hybrid No Crank With Multiple Diagnostic Codes – (Mar 8, 2016)

Subject: Hybrid No Crank With Multiple Diagnostic Codes
Models: 2009-2013 Cadillac Escalade
2008-2013 Chevrolet Tahoe Hybrid
2008-2013 GMC Yukon Hybrid
2009-2013 Chevrolet Silverado Hybrid
2009-2013 GMC Sierra Hybrid
with Two-Mode Hybrid System (RPO HP2)

This PI was superseded to update model year to 2013. Please discard PIT4811A.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

Condition/Concern

You may experience a “No Crank” concern with multiple codes set in several different modules. After retrieving the codes and recording them down on paper, you may wonder which codes you should start with first.

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PIC6181: OVD Email Inoperative, Incorrect, Or Missing Information After The Canada Upgrade (15-08-44-001) – 2000-2015 GM Passenger Cars And Trucks

#PIC6181: OVD Email Inoperative, Incorrect, Or Missing Information After The Canada Upgrade (15-08-44-001) – (Mar 8, 2016)

Subject: OVD Email Inoperative, Incorrect, Or Missing Information After The Canada Upgrade (15-08-44-001)
Models: 2000-2015 GM Passenger Cars And Trucks

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.


 

Condition/Concern

A customer may comment that their OVD Email report is inoperative, incorrect, or missing information after the OnStar Canada Upgrade (latest version of Bulletin 15-08-44-001).

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16-NA-072: Diagnostic Tip for No Start and Malfunction Indicator Lamp Illuminated with DTC P0C78 – 2014-2016 Chevrolet Spark EV

#16-NA-072: Diagnostic Tip for No Start and Malfunction Indicator Lamp Illuminated with DTC P0C78 – (Mar 7, 2016)

Subject: Diagnostic Tip for No Start and Malfunction Indicator Lamp Illuminated with DTC P0C78

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Spark EV 2014 2016

 

Condition Some customers may comment on the following conditions:

  • No Start condition.
  • Malfunction Indicator Lamp (MIL) Illuminated.

A technician may notice that DTC P0C78 is set.

Cause This condition may be caused by a faulty Coolant Heater Control Module (K10).

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PI1519D: Stop/Start System Malfunction or DTC P1064, P1065, P1066, P1068, P1069, P1070, P1074, P1077, P1078, P1079, P107A, P107B, P107C, P107D, P107E, P107F, P108A, P108B, P108C, P108D, P108E or P108F Set – 2016 Cadillac ATS, CTS

#PI1519D: Stop/Start System Malfunction or DTC P1064, P1065, P1066, P1068, P1069, P1070, P1074, P1077, P1078, P1079, P107A, P107B, P107C, P107D, P107E, P107F, P108A, P108B, P108C, P108D, P108E or P108F Set – (Mar 21, 2017)

Subject: Stop/Start System Malfunction or DTC P1064, P1065, P1066, P1068, P1069, P1070, P1074, P1077, P1078, P1079, P107A, P107B, P107C, P107D, P107E, P107F, P108A, P108B, P108C, P108D, P108E or P108F Set
Models: 2016 Cadillac ATS, CTS
Equipped with Stop/Start System (RPO KL9)
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 update the Recommendation/Instructions and Warranty Information. Please discard PI1519C.


 

Condition/Concern

Some customers may comment that the check engine light appears on the cluster or that the Stop/Start feature is no longer functioning.

During diagnosis, the technician may find DTC P1064, P1065, P1066, P1068, P1069, P1070, P1074, P1077, P1078, P1079, P107A, P107B, P107C, P107D, P107E, P107F, P108A, P108B, P108C, P108D, P108E or P108F set as current or history.

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