A172084290-ZSUB: MY17 Colorado and Trailblazer Park Assist Issue – 2017 Holden Colorado & Chevrolet Trailbazer

#A172084290-ZSUB: MY17 Colorado and Trailblazer Park Assist Issue – (Jun 11, 2017)

Subject: A172084290–ZSUB Service Update Bulletin MY17 Colorado/Trailblazer Park Assist Issues
Models: MY17 Colorado
MY17 Trailbazer

 


Reference Number: A172084290 Release Date: June 2017
GWM Number: A172084290 Revision:

 

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 9 June 2019.

 

Make Model Model Year VIN RPO Description
From To From To
Holden Colorado 2017 2018 UD5

UD7

Front / Rear Park Assist

Rear Park Assist

Trailblazer

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.

Note: Park assist calibrations are currently available for the following variants:

  • LTZ Trailblazer
  • LTZ Crew Cab Pickup
  • Z71 Crew Cab Pickup
  • LTZ Extended Cab Pickup

Park assist calibrations for other variants will be released at a later date.

 

Condition Incorrect operation of the vehicle’s park assist system. Customers will experience the following conditions:

  • Tow ball detection during reverse
  • Front park assist distance is reduced / disabled during operation
  • Rear park assist stop tone activates early during reverse
  • Park assist system intermittently turns off during reverse.
Correction Dealers to SPS Program and Config & Setup the park assist module with the improved calibration files.

Expected BP: June 2017

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Brazil – Diagnostics OnStar vehicles – 2017 Chevrolet

4823535 – Diagnostics OnStar vehicles

Subject: Diagnostics OnStar vehicles

Brand: Model: Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Onix, Prisma, New Cruze, S10, Trailblazer, Cobalt, Spin and Tracker 2017 All All

 

Involved Region or Country Brazil
Additional Options (RPO) UE3
Condition Inform the Network of Dealers / Authorized Offices / Compact Branches on how to carry out vehicle diagnostics when there is an anomaly related to the OnStar module.
Cause There is a possibility that the vehicle can be diagnosed when there is a complaint about the OnStar system, which can lead to an incomplete and incorrect diagnosis, as well as replacement of the OnStar module and contact at the OnStar service center improperly.

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PIT5343: Blower Motor Is Inoperative At Startup – 2014-2015 Chevrolet & GMC

#PIT5343: Blower Motor Is Inoperative At Startup – (Nov 12, 2014)

Subject: Blower Motor Is Inoperative At Startup
Models: 2014 Chevrolet Silverado 1500
2015 Chevrolet Silverado, Colorado
2014 GMC Sierra 1500
2015 GMC Sierra, Canyon
With Manual HVAC (RPO C67 or C42)

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

 

Condition/Concern

A customer may comment that upon starting the vehicle there is a lack of air flow through the HVAC vents and that the indicators on the HVAC controls are illuminated and the display may show A/C off.

The customer should be questioned to determine if the following steps were followed prior to the event happening:

  1. Vehicle running
  2. Blower motor is in any position other than off.
  3. Defrost button is selected (indicator light on).
  4. Blower Motor is turned to the Off position
  5. Defrost button is selected (indicator light goes off).
  6. Vehicle is turned off (open and close driver’s door to let modules go to sleep after several mins)
  7. Vehicle is restarted.
  8. Blower motor knob is turned to any position other than Off, the concern is now present and the blower motor will not adjust.

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PIT5237: Pandora Audio Lost After a Bluetooth Call Ends – 2013-2014 Cadillac Buick Chevrolet GMC

#PIT5237: Pandora Audio Lost After a Bluetooth Call Ends – (Oct 15, 2013)

Subject: Pandora Audio Lost After a Bluetooth Call Ends
Models: 2013-2014 Cadillac ATS, SRX, XTS
2014 Buick LaCrosse, Regal
2014 Cadillac CTS Sedan, ELR
2014 Chevrolet Corvette, Impala, Silverado 1500
2014 GMC Sierra 1500

 

Condition/Concern

Pandora audio will revert back to the phone after a Bluetooth call when an iPhone is connected to the vehicle via USB.

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PIT5229A: Excessive Dust Intruding Into The Cabin Interior – 2014 Chevrolet Silverado & GMC Sierra 1500

#PIT5229A: Excessive Dust Intruding Into The Cabin Interior – (Jan 15, 2014)

Subject: Excessive Dust Intruding Into The Cabin Interior
Models: 2014 Chevrolet Silverado 1500
2014 GMC Sierra 1500
Built prior to 01/07/2014

This PI was superseded to add production breakpoint. Please discard PIT5229.


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

 

Condition/Concern

Some customers may comment that they have excessive dust intruding into the cabin of their pickup. This concern will be more noticeable when the HVAC is in recirculation mode. When in recirculation mode, the outside air is completely closed off and the HVAC system is recirculating 100% of the cabin air. This will cause very low cabin pressure and may allow dust to enter the cabin at various locations.

GM Engineering has released updated HVAC calibrations which will close the recirculation door 90% when in recirculation mode. This will allow the HVAC system to draw in approximately 10% outside air, thus slightly pressurizing the cabin, making it more difficult for dust to enter the cabin. This is similar to how the previous generation truck’s recirculation mode operated.

Note: This new calibration may have a marginal decrease in HVAC cooling and slightly more outside ambient noise being heard in the cabin, while in recirculation mode.

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