Information on Chassis Control Module (CCM) Receives Invalid Data and Sets DTC U0422 The Technician may...
Chevrolet technical service bulletin 16-NA-407 for 2018 Chevrolet Equinox, 2018 GMC Terrain and 2017-2018 Buick Lacrosse and others.
- Bulletin number
- 16-NA-407
- Component
- Electrical system
- Summary
- Information on Chassis Control Module (CCM) Receives Invalid Data and Sets DTC U0422 The Technician may find DTCs U0422 set. The Technician may also find the following DTCs set. U1534 U1538 Information Based on analysis with the BCM team, during vehicle startup (on occasion) the PEPS module arbitration along with high bus traffic leads to the BCM setting the door open switch virtual device availability (VDA) to unavailable. The BCM does not update the VDA back to Available until the door switch changes state (this signal is event based as opposed to periodic). The ICCM sets the U0422 DTC after 1 second of either the door ajar VDA or door open VDA being unavailable. Correction Ignore CCM U0422 DTC (no service necessary) unless it is a current/active code or is accompanied by associated BCM faults U1534 or U1538.
Owners of these vehicles have filed 291 complaints in the electrical category.
Vehicles covered
- Chevrolet Equinox 2018 2018
- GMC Terrain 2018 2018
- Buick Lacrosse 2017-2018 20172018
- Chevrolet Bolt EV 2017-2018 20172018
- Cadillac XT5 2017-2018 20172018
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