PIT5521: Diagnostic Tip – Service Trailer Brake Message with DTC C111B C1112 C1113 C1114 – 2014-2018 Chevrolet & GMC

#PIT5521A: Diagnostic Tip – Service Trailer Brake Message with DTC C111B C1112 C1113 C1114 – (Sep 25, 2017)

Subject: Diagnostic Tip – Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 1500 2014 All All All All
Chevrolet Silverado 2015-2018 All All All All
Chevrolet Suburban 2015-2018 All All All All
Chevrolet Tahoe 2015-2018 All All All All
GMC Sierra 1500 2014 All All All All
GMC Sierra 2015-2018 All All All All
GMC Yukon 2015-2018 All All All All

 

Involved Region or Country North America
Additional RPO/s: Integrated Trailer Brake Controller (RPO JL1)
Condition Some owner may comment of a Service Trailer Brake message on the DIC and the following DTC’s set in the Chassis Control Module: C111B, C1112, C1113, and/or C1114. It may also be noticed, while cranking the engine, there is a slow crank.
Cause These concerns could be caused by low battery voltage due to a battery issue.

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PIT5405: Steering Jerks Or Kicks Back / Reduced Power Steering Assist / Engine Stall / No Start / Service Stabilitrak / IPC / Radio / HVAC Goes Blank Various DTCs – 2014-2017 Cadillac Chevrolet & GMC

#PIT5405C: Steering Jerks Or Kicks Back / Reduced Power Steering Assist / Engine Stall / No Start / Service Stabilitrak / IPC / Radio / HVAC Goes Blank Various DTCs – (Jan 27, 2017)

Subject: Steering Jerks Or Kicks Back / Reduced Power Steering Assist / Engine Stall / No Start / Service Stabilitrak / IPC / Radio / HVAC Goes Blank Various DTCs
Models: 2015-2017 Cadillac Escalade Models
2014 Chevrolet Silverado 1500
2015-2017 Chevrolet Silverado, Suburban, Tahoe
2014 GMC Sierra 1500
2015-2017 GMC Sierra, Yukon Models

This PI was superseded to update the title, additional symptoms, recommendation and 2017 models. Please discard PIT5405B.


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

 

Condition/Concern

Some owners may comment of any of the following issues below. These issues may seem more likely to occur if the vehicle is stopped/slow speeds and turning the steering wheel, which applies additional load to the truck electrical system.

  • Reduced or loss of power steering assist (only LD models equipped with electric power steering)
  • Steering wheel jerks or kicks back when turning
  • Service Stabilitrak message with warning chime
  • Engine stall
  • IPC going blank or inoperative
  • Radio/ICS going blank
  • HVAC going blank
  • Hood ajar message and/or dome lamps flash when shifting into reverse
  • Alarm sounds when locking doors or door locks cycling
  • Wipers continue to run for a short time after turning off and then stop/park in the incorrect location
  • Any of the following DTCs: U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, C0710, U1510, B127B, B2605, B3600, C0800, U0428, U0452, U0131, and P0513

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PIP5414: Code P2199 Setting on Bi-Fuel Trucks in CNG Mode – 2016 Chevrolet Silverado & GMC Sierra

#PIP5414: Code P2199 Setting on Bi-Fuel Trucks in CNG Mode – (Aug 5, 2016)

Subject: Code P2199 Setting on Bi-Fuel Trucks in CNG Mode

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 2016 2016 All All 6.0L (LC8) All
GMC Sierra 2016 2016 All All 6.0L (LC8) All

 

Involved Region or Country North America.
Additional RPO/s: FHV- BI-FUEL COMPRESSED NATURAL GAS (CNG) SYSTEM
Condition Some customers may comment that the malfunction indicator lamp (MIL) will intermittently illuminate when transitions to CNG Mode.

They may also comment that they are unable to switch the fuel mode from Gasoline to CNG.

Cause DTC P2199 Intake Air Temperature (IAT) Sensors 1-2 Not Plausible, setting in CNG Mode.

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16-NA-244: Information on Diesel Exhaust Fluid (DEF) – 2011-2018 Chevrolet & GMC

#16-NA-244: Information on Diesel Exhaust Fluid (DEF) – (Sep 6, 2017)

Subject: Information on Diesel Exhaust Fluid (DEF)

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Cruze 2014 2015 Diesel (RPO L5P, LML, LGH, LUZ, LWN, LH7)
Cruze 2017 2018
Express Van 2010 2018
Colorado 2016 2018
Silverado 2011 2018
GMC Canyon 2016 2018
Savana Van 2010 2018
Sierra 2500-3500HD 2011 2018

 

Involved Region or Country North America and N.A. Export Regions

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PIT5515: Fuel Tank Shield Design Change – 2016 Chevrolet Silverado & GMC Sierra 1500

#PIT5515: Fuel Tank Shield Design Change – (Jul 20, 2016)

Subject: Fuel Tank Shield Design Change

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 1500 2016 2016 All All
GMC Sierra 1500 2016 2016 All All

 

Involved Region or Country North America
Additional RPO/s: Crew and Double Cab Models
Condition It may be noticed the fuel tank shield has changed or may appear to be missing.
Cause There was a design change to the fuel tank shield, as shown below. The previous design shield (1) has been replaced with a new design shield (2)..

design change to the fuel tank shield

design change to the fuel tank shield

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