Chevrolet HHR Service Bulletins

1,348 manufacturer communications on file.

• Date not available•Document ID: 10018541

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  3629

  Date Added:

  January 6, 2006

  Manufacturer:

  CHEVROLET

  Summary

  PROGRAMMING ALERT: PROGRESS BAR ON TECH 2 MAY NOT DISPLAY 100%. *TT

  Associated Products (6)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Pontiac G62006 Pontiac Solstice2006 Saturn Ion
  Associated Documents

  • DownloadMC-10018541-0001.pdf↗
• Date not available•Document ID: 10018539

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

  Mfr Comm. #:

  3562C

  Date Added:

  January 6, 2006

  Manufacturer:

  SATURN

  Summary

  SERVICE ENGINE SOON LIGHT DUE TO P0420 DIAGNOSTIC TROUBLE CODE ON LOW MILEAGE VEHICLES - UPDATE ECM CALIBRATION. *TT

  Associated Products (4)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Saturn Ion
  Associated Documents

  • DownloadMC-10018539-0001.pdf↗
• Date not available•Document ID: 10018533

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING

  Mfr Comm. #:

  3642

  Date Added:

  January 5, 2006

  Manufacturer:

  PONTIAC

  Summary

  SES LIGHT WITH A P0230 DTC AND NO PERFORMANCE CONCERNS - REPLACE ECM. *TT

  Associated Products (6)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Pontiac G62006 Pontiac Solstice2006 Saturn Ion
  Associated Documents

  • DownloadMC-10018533-0001.pdf↗
• Date not available•Document ID: 10017695

  Service Bulletin/Repair Instructions
  FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM

  Mfr Comm. #:

  3720

  Date Added:

  November 21, 2005

  Manufacturer:

  CHEVROLET

  Summary

  FUEL LEVEL DIAGNOSTICS/SPECS INACCURATE. *TT

  Associated Products (1)

  2006 Chevrolet HHR
  Associated Documents

  • DownloadMC-10017695-0001.pdf↗
• Date not available•Document ID: 10017261

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE

  Mfr Comm. #:

  3310D

  Date Added:

  November 1, 2005

  Manufacturer:

  CHEVROLET

  Summary

  SERVICE ENGINE SOON (SES) LIGHT DUE TO A P0171 - INSPECT AIR INTAKE AND OIL DIPSTICK. *TT

  Associated Products (5)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Saturn Ion2005 Chevrolet Cobalt2005 Saturn Ion
  Associated Documents

  • DownloadMC-10017261-0001.pdf↗
• Date not available•Document ID: 10017032

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE

  Mfr Comm. #:

  3433

  Date Added:

  October 21, 2005

  Manufacturer:

  CHEVROLET

  Summary

  SERVICE ENGINE SOON (SES) LIGHT AND SEVERE ENGINE MISFIRE ON CYLINDERS 1 AND 4 OR CYLINDERS 2 AND 3. *TT UPDATED 08-15-07. *KB

  Associated Products (35)

  2007 Pontiac G52006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Saturn Ion2006 Saturn Vue2005 Chevrolet Cavalier2005 Chevrolet Cobalt2005 Chevrolet Malibu2005 Chevrolet Malibu Classic2005 Pontiac Grand AM2005 Pontiac Sunfire2005 Saturn Ion2005 Saturn L3002005 Saturn Vue2004 Chevrolet Cavalier2004 Chevrolet Malibu2004 Chevrolet Malibu Classic2004 Oldsmobile Alero2004 Pontiac Grand AM+ 15 more
  Associated Documents

  • DownloadMC-10017032-0001.pdf↗
• Date not available•Document ID: 10017006

  Service Bulletin/Repair Instructions
  EXTERIOR LIGHTING

  Mfr Comm. #:

  3393A

  Date Added:

  October 20, 2005

  Manufacturer:

  CHEVROLET

  Summary

  BACKLIGHTING IS INOP DURING DAYLIGHT CONDITIONS (HEADLIGHT SWITCH TURNED ON MANUALLY) *SC

  Associated Products (8)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Pontiac G62005 Chevrolet Cobalt2005 Chevrolet Malibu2005 Pontiac G62004 Chevrolet Malibu
  Associated Documents

  • DownloadMC-10017006-0001.pdf↗
• Date not available•Document ID: 10016956

  Service Bulletin/Repair Instructions
  STEERING:HYDRAULIC POWER ASSIST SYSTEM

  Mfr Comm. #:

  3678

  Date Added:

  October 19, 2005

  Manufacturer:

  CHEVROLET

  Summary

  POWER STEERING INOPERATIVE DUE TO OPEN FUSE. *SC

  Associated Products (1)

  2006 Chevrolet HHR
  Associated Documents

  • DownloadMC-10016956-0001.pdf↗
• Date not available•Document ID: 10016948

  Service Bulletin/Repair Instructions
  SUSPENSION

  Mfr Comm. #:

  3687

  Date Added:

  October 18, 2005

  Manufacturer:

  CHEVROLET

  Summary

  CLUNK NOISE FROM FRONT OF VEHICLE DURING TURNING MANEUVER. *SC

  Associated Products (5)

  2006 Chevrolet Cobalt2006 Chevrolet HHR2005 Chevrolet Cobalt2005 Saturn Ion2004 Saturn Ion
  Associated Documents

  • DownloadMC-10016948-0001.pdf↗
• Date not available•Document ID: 10016822

  Service Bulletin/Repair Instructions
  ENGINE AND ENGINE COOLING:ENGINE

  Mfr Comm. #:

  3404

  Date Added:

  October 12, 2005

  Manufacturer:

  CHEVROLET

  Summary

  MACHINING DEBRIS ON THE OIL FILTER ELEMENT. *SC

  Associated Products (25)

  2007 Chevrolet Cobalt2007 Chevrolet HHR2007 Chevrolet Malibu2007 Pontiac G52007 Pontiac G62007 Pontiac Solstice2007 Saturn Ion2007 Saturn Sky2007 Saturn Vue2006 Chevrolet Cobalt2006 Chevrolet HHR2006 Chevrolet Malibu2006 Pontiac G62006 Pontiac Solstice2006 Saturn Ion2006 Saturn Vue2005 Chevrolet Cavalier2005 Chevrolet Cobalt2005 Chevrolet Malibu2005 Chevrolet Malibu Classic+ 5 more
  Associated Documents

  • DownloadMC-10016822-0001.pdf↗
• September 4, 2026•Document ID: 11037253

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902W

  Date Added:

  September 10, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (751)

  2027 Buick Enclave2027 Buick Encore GX2027 Cadillac Escalade IQ2027 Cadillac Escalade IQL2027 Cadillac Lyriq2027 Cadillac Optiq2027 Cadillac Vistiq2027 Chevrolet Blazer2027 Chevrolet Bolt EV2027 Chevrolet Corvette2027 Chevrolet Equinox2027 Chevrolet Trailblazer2027 Chevrolet Traverse2027 GMC Acadia2027 GMC Terrain2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista+ 731 more
  Associated Documents

  • DownloadMC-11037253-0001.pdf↗
• April 1, 2026•Document ID: 11030974

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT3271Q

  Date Added:

  April 7, 2026

  Manufacturer:

  CADILLAC

  Summary

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

  Associated Products (736)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 716 more
  Associated Documents

  • DownloadMC-11030974-0001.pdf↗
• March 9, 2026•Document ID: 11030092

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6104

  Date Added:

  March 17, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (736)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 716 more
  Associated Documents

  • DownloadMC-11030092-0001.pdf↗
• March 9, 2026•Document ID: 11030091

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902V

  Date Added:

  March 17, 2026

  Manufacturer:

  BUICK

  Summary

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

  Associated Products (736)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 716 more
  Associated Documents

  • DownloadMC-11030091-0001.pdf↗
• January 8, 2026•Document ID: 11027601

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902U

  Date Added:

  January 13, 2026

  Manufacturer:

  CHEVROLET

  Summary

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

  Associated Products (735)

  2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop+ 715 more
  Associated Documents

  • DownloadMC-11027601-0001.pdf↗
• November 20, 2025•Document ID: 11025755

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT5214G

  Date Added:

  November 28, 2025

  Manufacturer:

  CADILLAC

  Summary

  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 support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.

  Associated Products (736)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 716 more
  Associated Documents

  • DownloadMC-11025755-0001.pdf↗
• September 9, 2025•Document ID: 11023091

  Other
  UNKNOWN OR OTHER

  Mfr Comm. #:

  13598

  Date Added:

  September 10, 2025

  Manufacturer:

  GMC

  Summary

  New Vehicle Monitoring Programs Section in IVH

  Associated Products (843)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 823 more
  Associated Documents

  • DownloadMC-11023091-0001.pdf↗
• August 14, 2025•Document ID: 11022084

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP4902T

  Date Added:

  August 22, 2025

  Manufacturer:

  GMC

  Summary

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

  Associated Products (681)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 661 more
  Associated Documents

  • DownloadMC-11022084-0001.pdf↗
• August 7, 2025•Document ID: 11021792

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC5650M

  Date Added:

  August 12, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.

  Associated Products (896)

  2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer2026 Chevrolet BrightDrop2026 Chevrolet Colorado+ 876 more
  Associated Documents

  • DownloadMC-11021792-0001.pdf↗
• July 18, 2025•Document ID: 11020816

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP5601C

  Date Added:

  July 23, 2025

  Manufacturer:

  CHEVROLET

  Summary

  This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

  Associated Products (726)

  2025 Buick Enclave2025 Buick Encore2025 Buick Encore GX2025 Buick Envision2025 Buick Envista2025 Cadillac Celestiq2025 Cadillac CT42025 Cadillac CT52025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Cadillac Lyriq2025 Cadillac Optiq2025 Cadillac XT42025 Cadillac XT52025 Cadillac XT62025 Chevrolet Blazer2025 Chevrolet BrightDrop2025 Chevrolet Colorado2025 Chevrolet Corvette+ 706 more
  Associated Documents

  • DownloadMC-11020816-0001.pdf↗