2020 Chevrolet Bolt EV TSBs
599 manufacturer communications for the 2020 Chevrolet Bolt EV sit in NHTSA's public file. A TSB is factory repair guidance, not a recall — the repair is not automatically free. The 2020 Bolt EV problem report covers complaints, recalls, and investigations.
What the bulletins cover
Warranty extensions, campaigns & software updates
Worth checking your VIN against — these can mean free or reimbursed work if your vehicle qualifies.
Certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
Certain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified. Dealers are to provide the customer with the latest design charging adapter.
Certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
Certain vehicles listed above may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from…
Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from…
Certain 2020 – 2022 model year Chevrolet Bolt EV and 2022 model year Chevrolet Bolt EUV vehicles may have a condition in which a false diagnostic trouble code (DTC), U3636 symptom 09, is triggered. This false DTC is resulting in customers experiencing a Malfunction Indicator…
Certain 2020 – 2022 model year Chevrolet Bolt EV and 2022 model year Chevrolet Bolt EUV vehicles may have a condition in which a false diagnostic trouble code (DTC), U3636 symptom 09, is triggered. This false DTC is resulting in customers experiencing a Malfunction Indicator…
Service Update - Certain vehicles may have a condition where the advanced diagnostic software recall remedy in NHTSA Recall 21V650 may not have been correctly installed in this vehicle population. Dealers are to reprogram the Hybrid Powertrain Control Module 2, Battery Energy…
Service update - certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The…
Service update - certain vehicles may need the battery software updated. Dealers will reprogram the Hybrid Powertrain Control Module 2, Battery Energy Control Module, and the Body Control module.
This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
Most recent service bulletins
The 20 most recent of 599 communications on file. The complete set is searchable on NHTSA's page for this vehicle.
PI to help diagnose A/C concern
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
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…
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
New Vehicle Monitoring Programs Section in IVH
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
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,…
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This service bulletin provides information on Tire Sidewall Irregularities.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.