Suburban 2WD

440 service bulletins filed with NHTSA for this model year

• Jun 3, 2026UNKNOWN OR OTHERPIT6503A

  This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.

• May 29, 2026UNKNOWN OR OTHERPIT6209K

  This Preliminary information communicates recovery procedure after return to dealer message.

• May 27, 2026UNKNOWN OR OTHERPIT6519

  This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.

• May 14, 2026UNKNOWN OR OTHERPIT5509M

  This PI provides diagnostic tips for diagnosing electric trailer brakes issues.

• May 14, 2026UNKNOWN OR OTHERPIC6540J

  This Preliminary information communicates to dealers a procedure to reset the radio.

• May 11, 2026UNKNOWN OR OTHERPIC6551B

  This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

• May 11, 2026UNKNOWN OR OTHERPIC6540H

  This Preliminary information communicates to dealers a procedure to reset the radio.

• May 11, 2026UNKNOWN OR OTHERPIC6423A

  Pi created to provide GM dealers with information on gathering information for projection issue

• and 432 more

Source: NHTSA manufacturer communications (technical service bulletins).