Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Cadillac for this TSB. Call your local Cadillac dealer's service department & ask for a copy of TSB# 16-NA-407 4.
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Information on Chassis Control Module (CCM) and Hybrid Powertrain Control Module (HPCM) Receives Invalid Data and Sets DTC U0422
The technician may find DTC U0422 set.
The technician may also find the following DTCs set:
• U1534
• U1538
Based on analysis with the BCM and Hybrid Powertrain Control Module (HPCM) teams, during vehicle startup
(on occasion) the PEPS module arbitration along with high bus traffic leads to the BCM or HPCM setting the
door open switch virtual device availability (VDA) to unavailable. The BCM or HPCM 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 and HPCM sets the U0422 DTC after 1 second of either the door ajar VDA or door open
VDA being unavailable
