Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs – 2014-2016 Cadillac Chevrolet GMC

NHTSA ID Number: 10113356

Manufacturer Communication Number: PIT5405C

Summary

This Preliminary Information communication provides information to the technician about vehicles that have a reduced or loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak message with warning chime, engine stall, Instrument Panel Cluster going blank or inoperative, radio/Integrated Center Stack going blank, Heater-Vent-Air Conditioning going blank, hood ajar message and/or dome lamps flash when shifting into reverse, alarm sounds when locking doors or door locks cycling, and or wipers continue to run for a short time after turning off and then stop/park in the incorrect location. Technician may find Diagnostic Trouble Codes U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, C0710, U1510, B127B, B2605, B3600, C0800, U0428, U0452, U0131, and P0513 set in the vehicle. Check the body control module ground at the G218 location. The front dash insulator mat may be trapped between the ground eyelet and the body stud. Remove the round nut and eyelet and cut the front dash insulator mat away from the ground stud so it no longer interferes with the ground stud and reinstall the eyelet and ground nut. Technician will also inspect the starter solenoid battery cable for shorting out on the starter heat shield. Technician will need to voltage drop the battery cables. The battery should be tested using the GR8. X183 or X133 should be inspected for any broken/loose/backed out terminals.

 


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

– Steering wheel jerks or kicks back when turning

– 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

 

These concerns could be caused by any of the following issues:

1. A poor BCM ground at G218.

2. A shorted B+ Battery cable (3) at the Starter Solenoid caused by:

– A loose starter shield contacting the starter battery cable terminal ring

– A starter cable ring terminal that has been mis-installed and/or rotated when installed on the starter solenoid

3. Battery cables with high resistance and/or loose connections at the:

– Battery fuse block

– Positive or negative battery cables

4. A discharged or faulty battery.

5. A loose connection at the main power and ground 2-way connector (X183 or X133 depending on model) for the power steering rack.

Note: The above items could cause the discharged battery.

 


26 Affected Products

Vehicles

MAKEMODELYEAR
CADILLACESCALADE2015-2017
CADILLACESCALADE ESV2015-2017
CHEVROLETSILVERADO2015-2017
CHEVROLETSILVERADO 15002014
CHEVROLETSUBURBAN2015-2017
CHEVROLETTAHOE2015-2017
GMCSIERRA2015-2017
GMCSIERRA 15002014
GMCYUKON2015-2017
GMCYUKON XL2015-2017

 


1 Associated Document

Manufacturer Communications

Bulletin No.: PIT5405C
Date: Jan-2017

MC-10113356-9999.pdf 714.806KB

 


NHTSA ID Number: 10083324

Manufacturer Communication Number: PIT5405B

Summary

THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN FOR A REDUCED POWER MESSAGE, STEERING ASSIST, ENGINE STALL OR THE INSTRUMENT PANEL, RADIO, AND OR HEATER-VENT-AIR CONDITIONING GO BLANK WITH MULTIPLE DIAGNOSTIC TROUBLE CODES. IF ANY OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, U1510, U0073, B127B, B2605, B3600,C0800, U0428, AND U0452 SET IN THE VEHICLE. CHECK THE BODY CONTROL MODULE GROUND AT THE G218 LOCATION. THE FRONT DASH INSULATOR MAT MAY BE TRAPPED BETWEEN THE GROUND EYELET AND THE BODY STUD. REMOVE THE ROUND NUT AND EYELET AND CUT THE FRONT DASH INSULATOR MAT AWAY FROM THE GROUND STUD SO IT NO LONGER INTERFERES WITH THE GROUND STUD AND REINSTALL THE EYELET AND GROUND NUT. TECHNICIAN SHOULD ALSO INSPECT CONNECTOR X183 AND X133FOR ANY BROKEN, LOOSE, BACKED OUT TERMINALS AND REPAIR AS NECESSARY.

 

1 Associated Document

Service Bulletin Document

Bulletin No.: PIT5405B
Date: Aug-2016

SB-10083324-5448.pdf 623.067KB

 


NHTSA ID Number: 10115119

Manufacturer Communication Number: PIT5405A

Summary

This Preliminary Information communication provides information to the technician for a reduced power message, steering assist, engine stall or the instrument panel, radio, and or Heater-Vent-Air Conditioning go blank with multiple diagnostic trouble codes. If any of the following diagnostic trouble codes U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, U1510, U0073, B127B, B2605, B3600,C0800, U0428, and U0452 set in the vehicle. Check the body control module ground at the G218 location. The front dash insulator mat may be trapped between the ground eyelet and the body stud. Remove the round nut and eyelet and cut the front dash insulator mat away from the ground stud so it no longer interferes with the ground stud and reinstall the eyelet and ground nut.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: PIT5405A
Date: Nov-2015

MC-10115119-9999.pdf 526.806KB

 


NHTSA ID Number: 10114513

Manufacturer Communication Number: PIT5405

Summary

This Preliminary Information communication provides information to the technician for a reduced power message, steering assist, engine stall or the instrument panel, radio, and or Heater-Vent-Air Conditioning go blank with multiple diagnostic trouble codes. If any of the following diagnostic trouble codes U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, U1510, U0073, B127B, B2605, B3600,C0800, U0428, and U0452 set in the vehicle. Check the body control module ground at the G218 location. The front dash insulator mat may be trapped between the ground eyelet and the body stud. Remove the round nut and eyelet and cut the front dash insulator mat away from the ground stud so it no longer interferes with the ground stud and reinstall the eyelet and ground nut.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: PIT5405
Date: May-2015

MC-10114513-9999.pdf 286.867KB

 


 

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13 thoughts on “Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs – 2014-2016 Cadillac Chevrolet GMC”

  1. I am having the exact same issues as described. Very dangerous as my wife pulls horse trailer with truck. This is crazy dangerous, as it has happened both while driving and while sitting still.

    Reply
  2. My 2014 Silverado LTZ is doing this – downright scary & life threatening – has died on me in the middle of turning through an intersection.
    James L in Atlanta

    Reply
      • This is a very dangerous problem. I did not get verification from anyone that these fixes took care of this problem. Like you, I’m afraid to drive my truck and will not sell it to anyone. It’s a very frustrating situation.

        Reply
  3. My issue is lil different on my 2015 yukon denali … i got a million dtc code on my scanner all are bcm related and trans temp sensor error ,my nav /radio screen went blank today .my oil and water temp go pretty high my trans temp on dash shows very low temp.. im trying to find info where in dash is that ground u talk about

    Reply
  4. Having same issue but not while using turn signals. Traction control, park assist, steering reduced with stall, blower motor will cut out at times, time on radio an hour off but will reset. All while driving but more often after a long drive. I did check the ground in question it looked alright but I did take off and re tighten and remove insulation. I will test drive and check back. Any other information would be helpful in resolving this intermittent and I think serious concern.

    Reply
  5. I’m having the same issue. 2014 1500 LTZ almost killed myself several times in the past week. Lights begin to flicker and that’s the first warning sign to watch for. Steering assist shuts down and truck stalls if turn continues at low speed. Shut down has happened various times now putting through a drive thru. I’m going to check this because the dealer won’t fix it for free. Should be a recall as you can die from loosing steering in a turn into traffic.

    Reply
  6. Having issues with stablitrak compensating my steering and warning lights for stabilitrak appearing when on the highway when using turn signals to switch lanes (70mph). When turning steering wheel to pull into spots or sitting still the steering wheel will act up. This G218 ground issue needs to be addressed by GM already. after two trips to a dealer i finally found a few references to this ground issue. follow the above information and it will fix you issue. real question to the GM rep reading this is when will you recall this before people have to pay to fix an assembly line issue past 36K miles.

    Reply

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