CT6 AWD

552 service bulletins filed with NHTSA for this model year

• Apr 1, 2026UNKNOWN OR OTHERPIT3271Q

  This preliminary information communicates information about how to determine if a wheel and tires size change is available.

• Mar 9, 2026UNKNOWN OR OTHERPIP6104

  This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

• Mar 9, 2026UNKNOWN OR OTHERPIP4902V

  This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

• Mar 2, 2026UNKNOWN OR OTHERPIT6425D

  This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss

• Jan 16, 2026UNKNOWN OR OTHERPIT6425C

  This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's

• Jan 14, 2026UNKNOWN OR OTHERPIP6098

  This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.

• Jan 8, 2026UNKNOWN OR OTHERPIP4902U

  This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

• Nov 20, 2025UNKNOWN OR OTHERPIT5214G

  This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further sup

• and 544 more

Source: NHTSA manufacturer communications (technical service bulletins).