2-MODE (HYBRID) No Crank After Discharged Or Dead 12v Battery – 2008-2013 Cadillac Chevrolet GMC

Bulletin No.: PIT4585F
Published date: 03/20/2019


Preliminary Information


PIT4585F 2-MODE (HYBRID) No Crank After Discharged Or Dead 12v Battery

 

Models

Brand: Model: Model Years: VIN: Engine: Transmissions:
from to
Cadillac Escalade 2009 – 2013 All All All M99
Chevrolet Tahoe 2008 – 2013 All All All M99
Chevrolet Silverado 2009 – 2013 All All All M99
GMC Yukon 2008 – 2013 All All All M99
GMC Sierra 2009 – 2013 All All All M99

 

Supersession Statement

This PI was superseded to add RPO Codes. Please discard PIT4585E.

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

 

Condition / Concern

There may be a no crank condition after the vehicle has had very low accessory battery voltage or a dead battery condition. This may have also occurred after the vehicle was jump started with the vehicle key left in the “ON” position and DTC P0C76 may have set.

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Malfunction Indicator Lamp (MIL) Illuminated – DTC P0172 Set – 2013-2019 Buick Cadillac Chevrolet & GMC

Bulletin No.: 18-NA-246
Date: February, 2019


Service Bulletin


TECHNICAL


Subject: Malfunction Indicator Lamp (MIL) Illuminated – DTC P0172 Set
Attention: This bulletin applies to the vehicles that have fuel enriched engine oil due to short driving intervals.

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Buick Envision 2016 2019 Equipped with 2.0L (RPO LTG)
Regal 2014
Cadillac ATS 2013
CTS 2014
Chevrolet Camaro 2016
Equinox 2018
Malibu 2013
Traverse 2018
GMC Terrain 2018

 

Involved Region or Country North America
Condition Some customers may comment that the MIL is illuminated.

Some technicians may find DTC P0172 (Fuel Trim System Rich) set in the Engine Control Module (ECM).

Cause This condition may be caused by driving the vehicle in short intervals, allowing excessive fuel to collect in the crankcase.
Correction Important:  This service procedure is for vehicles that have fuel enriched engine oil due to frequent short trip operation. Replacing fuel components such as the high pressure fuel pump or fuel injectors will not correct the setting of P0172 under the operating conditions described unless those components can be verified as causing a fuel rich condition.

If fuel in the engine oil has been confirmed to be caused by frequent short trip operation, refer to the Service Procedure below.

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Malfunction Indicator Lamp (MIL) Illuminated – DTC P050F Set – 2018-2019 Chevrolet Equinox & GMC Terrain

Bulletin No.: 18-NA-300
Date: February, 2019


Service Bulletin


TECHNICAL


Subject: Malfunction Indicator Lamp (MIL) Illuminated – DTC P050F Set

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Equinox 2018 2019 1.5L (LYX),

2.0L (LTG)

GMC Terrain

 

Involved Region or Country North America and N.A.Export Markets.
Condition Some customers may comment that the MIL is illuminated.

Some technicians may find DTC P050F (Brake Booster Weak Vacuum) set in the Engine Control Module (ECM).

Cause This condition may be caused by a software anomaly.
Correction Test the brake vacuum system to verify no leaks present and verify brake operation performance. If leak identified follow SI diagnostics. If no leak identified, reprogram ECM with latest calibration.

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Stalling, Lack of Engine Performance, Fuel Range Displays Low Mileage When Fuel Gauge Displays Adequate Fuel, Malfunction Indicator Light (MIL) Illuminated – DTC P018B, P0461, P0462, P0463, P0464, P2066, P2067, P2068, P2635 Set – 2017-2018 Buick Cadillac Chevrolet & GMC

Bulletin No.: 18-NA-365
Date: February, 2019


Service Bulletin


TECHNICAL


Subject: Stalling, Lack of Engine Performance, Fuel Range Displays Low Mileage When Fuel Gauge Displays Adequate Fuel, Malfunction Indicator Light (MIL) Illuminated – DTC P018B, P0461, P0462, P0463, P0464, P2066, P2067, P2068, P2635 Set

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Buick Enclave 2017 2018 LFY, LGX
Cadillac XT5
Chevrolet Traverse
GMC Acadia

 

Involved Region or Country North America
Additional Options (RPOs) F48 (AWD)
Condition Some customers may comment on one or more of the following concerns:

  • Stalling
  • Lack of engine performance issues
  • Low Range/Mileage displayed when the fuel gauge is displaying adequate fuel
  • MIL illuminated

Some technicians may find one or more of the following DTC’s set in the Engine Control Module (ECM):

 

Cause

This condition may be caused by the primary in-tank fuel pump module transfer jet manifold partially or completely blocked port.

  • The blockage of this jet port inhibits the suction to the fuel transfer line leading to inability to transfer fuel from Sub Side on AWD tanks.
Correction If any of the above conditions are present, refer to the service procedure below to validate the root cause.

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Surge, Chuggle, Fishbite, Shudder Feel During Driving Maneuvers – 2019 Cadillac XT4

Bulletin No.: 18-NA-378
Date: February, 2019


Service Bulletin


TECHNICAL


Subject: Surge, Chuggle, Fishbite, Shudder Feel During Driving Maneuvers

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Cadillac XT4 2019 2019 2.0L (LSY) 9T50 Automatic (M3H)

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