Technical Service Bulletins

A/C Compressor
- Air Conditioning (A/C) Not Working And/Or Blows Warm Air (24-NA-259)
- Unscheduled Supplemental Services (Including Flushing Services And Additives) And Proper Use Of Gm Simplified Maintenance Schedules (12-06-01-008B)
Accessories & Equipment
- Warranty Administration - Claim Submission For Vehicle Wide Programming (24-NA-132)
- Adding Attachments To TAC Cases In Dealer Case Management (PIP6015)
- GMC Hummer EV / SUV TAC Parts Restriction Program (PIT5858B)
Accessories Control Systems
- Odometer Servicing When Odometer Cannot Be Set To Actual Mileage (PIT4720F)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Front Floor Console Center Compartment Door Stuck Closed (25-NA-012)
- Oily Substance On Windshield Leaking From Moisture Sensor (PIC6086H)
Anti-Lock Brakes
- Information On Automatic Emergency Braking Event (AEB) Issues (25-NA-118)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
Anti-Theft Systems
- Key Code Security Rules And Information On Gm KEYCODE Look-Up Application (U.S. Only) (10-00-89-009F)
Automatic Trans
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
- Unscheduled Supplemental Services (Including Flushing Services And Additives) And Proper Use Of Gm Simplified Maintenance Schedules (12-06-01-008B)
- Gm TAC Support On Vehicle Automatic Transmission Concerns That Can Be Duplicated (PIP5621E)
- Information On Driveline Clunk Noise (99-04-20-002O)
Battery Management Systems
- Service High Voltage Message With Mil And/Or DTCS U2BF2, U2BF3, And/Or U2BF6 (PIT6129B)
- Diagnostic Aids: Vehicle Not Charging With NACS Or Tesla Adapter. Possible Codes P2E85 P0F71 P0D3F P1EE6 (PIT6353)
- SPS2 Hybrid/EV Battery Data Retrieval For Service High Voltage DTCS (PIP6009)
- Faulty Low 12V Battery Email ONSTAR Alerts (25-NA-048)
- Mil Is Displayed On The Dashboard - P2980 Set Current And Or History (PIP5994B)
- EV Charge Inlet Dust Cover Replacement Information (24-NA-083)
- Warranty Administration - North AMERICAN Charging Standard (NACS) Dc Adapter Warranty Claim Information (U.S. Only) (24-NA-202)
Body Electrical
- J-35616-64B Or El-35616-58 Terminal Test Probe Information/Repair (PIT5074R)
- Information On Reflective High Temperature Heat And/Or Insulating Tape For Wiring Harness Repairs (PIT5962B)
- Diagnostic Tip: No Start/ Ignition Will Not Turn On/ No Power Due To A Can Bus 2 Issue/Lightning Strike/ Failed Over The Air Update (PIT5985J)
Body Interior
- SUPERCRUISE Inoperative With Current Or History DTC: U1624 (PIT6056A)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Lin Bus Diagnostic Information (PIT5698E)
- Oily Substance On Windshield Leaking From Moisture Sensor (PIC6086H)
Brakes Control Systems
- Information On Automatic Emergency Braking Event (AEB) Issues (25-NA-118)
- Service Trailer Brake Message With DTC C1114 When Connected To A Trailer With A HYDRASTAR Electric Over Hydraulic Trailer Brake Actuator (PIT6212C)
Charging Systems
- Information On Use Of PICOSCOPE And PICOLOG For Battery Draw Monitoring/Intermittent Dead Battery (24-NA-229)
- Warranty Administration - North AMERICAN Charging Standard (NACS) Dc Adapter Warranty Claim Information (U.S. Only) (24-NA-202)
Collision/Avoidance
- Image Processing Module/Video Processing Gen2 Module Reset Instructions (PIT6369A)
- Image Processing Module/Video Processing Module Reset Instructions (PIC6566A)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- Service Drivers Assist Message With U3000 Sym 49 Set In The K180 Drivers Monitoring Module (PIT6191)
Communication Devices
- Loss Module Communication After Vehicle Wide Programming (VWP) (PIT6215B)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
Cooling System (Mechanical)
- Information On Flushing Oil Contamination From Cooling System (25-NA-052)
- Unscheduled Supplemental Services (Including Flushing Services And Additives) And Proper Use Of Gm Simplified Maintenance Schedules (12-06-01-008B)
Cruise Control Systems
- Rear Steering Inoperative DTCS U3000 / U1962 / U1961 (PIT6350A)
- SUPERCRUISE Inoperative With Current Or History DTC: U1624 (PIT6056A)
- SUPERCRUISE Dropping Out After Driving 30 - 60 Seconds And/Or Service Driver Assist Message Illuminated With DTCS U1626, U3000, And/Or B2BA1 (PIT6139D)
Electric Converters and Controllers
- Loss Module Communication After Vehicle Wide Programming (VWP) (PIT6215B)
- Faulty Low 12V Battery Email ONSTAR Alerts (25-NA-048)
- Hummer EV Current Or History DTC U0411 In The K179 Automated Driving Mapping Module (PIT6298)
- Vehicle Wide Programming Instructions (24-NA-113)
Electric Motor Systems
- Engineering Information - Malfunction Indicator Lamp (Mil) Illuminated On Driver Information Center (DIC) And/Or No-Start Condition Following A Recent Vehicle Update (PIE0836B)
- EV Drive Unit/ Internal Components TAC Restriction (PIP5981F)
- Service Trailer Brake Message With DTC C1114 When Connected To A Trailer With A HYDRASTAR Electric Over Hydraulic Trailer Brake Actuator (PIT6212C)
- Rear Steering Inoperative DTCS U3000 / U1962 / U1961 (PIT6350A)
- Faulty Low 12V Battery Email ONSTAR Alerts (25-NA-048)
- Check Trailer Wiring Message Displayed, Trailer Brake Disabled, And/Or DTC C1114 Stored When Pulling Trailer With A Battery Generator Or Solar Charger (23-NA-149)
- Vehicle Wide Programming Instructions (24-NA-113)
Electronic Suspension
- Diagnostic Tip For Service Leveling System Message And DTC: C1197 Sym92 (PIT6144G)
Engine Control Systems
- Engineering Information - Malfunction Indicator Lamp (Mil) Illuminated On Driver Information Center (DIC) And/Or No-Start Condition Following A Recent Vehicle Update (PIE0836B)
- Engineering Information - Hood Will Not Latch, Open And/Or Gets Stuck, Hood Ajar Message Displayed On Driver Information Center (DIC), DTCS P257D, P257E, P257F, B1C80, B1C81, B1C85, B1C89, B1C8C, B1C8D, B1CB5, B1CBF Set (PIE0834A)
- Image Processing Module/Video Processing Gen2 Module Reset Instructions (PIT6369A)
- Rear Steering Inoperative DTCS U3000 / U1962 / U1961 (PIT6350A)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- SPS2 Hybrid/EV Battery Data Retrieval For Service High Voltage DTCS (PIP6009)
- Mil Is Displayed On The Dashboard - P2980 Set Current And Or History (PIP5994B)
- Service High Voltage With Mil And/Or DTCS - U2220, U2221, U2222, U2223, U2224, U2225, U2226, U2227, U2228, U2229, U222A, U222B, U222C, U222D, U222E, U222F, U2230, U2231, U2232, U2233, U2234, U2235, U2236, U2237, U2C11 (PIT6044M)
Entertainment Systems
- Short Audio Cut Out At Startup (PIT6367A)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Image Processing Module/Video Processing Module Reset Instructions (PIC6566A)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- Route Not Loading Into Built In Google Maps When Sent From Mobile MYBRAND App - (FEB 13, 2025) (PIT6334)
- Update Failed See Dealer To Restore System Screen Recovery (PIT6209E)
- Radio Software Version Z172.6 - Multiple Updates For IOK (24-NA-168)
- Radio Staying On After Power Off And Opening The Driver Door (PIT6118B)
Exterior Body Panels
- Information On Front Hood Closure Concerns (25-NA-145)
- Engineering Information - Hood Will Not Latch, Open And/Or Gets Stuck, Hood Ajar Message Displayed On Driver Information Center (DIC), DTCS P257D, P257E, P257F, B1C80, B1C81, B1C85, B1C89, B1C8C, B1C8D, B1CB5, B1CBF Set (PIE0834A)
- Engineering Information - (Pictures Only) - Center Hood Molding Loose And/Or Potentially Detaching From Vehicle (PIE0826)
- MULTIPRO / MULTIFLEX Tailgate Drops Too Fast With Gm Accessory Kicker Audio System Installed (PIT5909C)
Exterior Lights
- Exterior Lamp Condensation And Water Leak Information And Replacement Guidelines (01-08-42-001Q)
Front Suspension
- Front End Noise While Driving Or Driving Over Irregular Surfaces (24-NA-191)
Fuel System
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
Fuses & Circuit Breakers
- J-35616-64B Or El-35616-58 Terminal Test Probe Information/Repair (PIT5074R)
Gauges & Instrument Panels
- Odometer Servicing When Odometer Cannot Be Set To Actual Mileage (PIT4720F)
- Engineering Information - Malfunction Indicator Lamp (Mil) Illuminated On Driver Information Center (DIC) And/Or No-Start Condition Following A Recent Vehicle Update (PIE0836B)
- Interior Cleaning - Instrument Panel (IP), Hard Or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability (06-00-89-029W)
- IOK Radio Issues (PIC6602C)
- Engineering Information - Malfunction Indicator Lamp (Mil) Illuminated On Driver Information Center (DIC), Bet And BEV3 ULTIUM Packs Setting Moving Average Voltage Detection (MAVD) Only Symptom Byte 27 For The Following DTCS: U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634, U3636, U3638, U363A, U363C, U363E, U2B98, U2B99, U2B9A, U2B9B, U2B9C, U2B9D, U2B9E, U2B9F Set (PIE0838)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- Diagnostic Tip: No Start/ Ignition Will Not Turn On/ No Power Due To A Can Bus 2 Issue/Lightning Strike/ Failed Over The Air Update (PIT5985J)
General Servicing
- Information On Refrigerant (R1234YF) For A/C Service (12-01-37-001G)
Headlights
- Exterior Lamp Condensation And Water Leak Information And Replacement Guidelines (01-08-42-001Q)
Heated Glass/Defoggers
- Rear And Side Tempered Glass Spots (Quench Marks) (PI0754G)
HVAC Control Systems
- Air Conditioning (A/C) Not Working And/Or Blows Warm Air (24-NA-259)
Ignition Switch/Steering Lock
- Key Code Security Rules And Information On Gm KEYCODE Look-Up Application (U.S. Only) (10-00-89-009F)
Ignition System
- Diagnostic Tip: No Start/ Ignition Will Not Turn On/ No Power Due To A Can Bus 2 Issue/Lightning Strike/ Failed Over The Air Update (PIT5985J)
Infotainment
- IOK Radio Issues (PIC6602C)
- Loss Module Communication After Vehicle Wide Programming (VWP) (PIT6215B)
- Image Processing Module/Video Processing Module Reset Instructions (PIC6566A)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- Route Not Loading Into Built In Google Maps When Sent From Mobile MYBRAND App - (FEB 13, 2025) (PIT6334)
- Hummer EV Current Or History DTC U0411 In The K179 Automated Driving Mapping Module (PIT6298)
- Radio Software Version Z172.6 - Multiple Updates For IOK (24-NA-168)
- SUPERCRUISE Dropping Out After Driving 30 - 60 Seconds And/Or Service Driver Assist Message Illuminated With DTCS U1626, U3000, And/Or B2BA1 (PIT6139D)
Interior/Exterior Trim
- Engineering Information - (Pictures Only) - Center Hood Molding Loose And/Or Potentially Detaching From Vehicle (PIE0826)
- Information On Proper Use Of Floor Mats (10-08-110-001L)
- Front Floor Console Center Compartment Door Stuck Closed (25-NA-012)
- Rear Seat Belt Bezel Falls Off (24-NA-257)
Lubrication System
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
- Information On Flushing Oil Contamination From Cooling System (25-NA-052)
- Unscheduled Supplemental Services (Including Flushing Services And Additives) And Proper Use Of Gm Simplified Maintenance Schedules (12-06-01-008B)
- Information On Engine Oil Consumption Guidelines (01-06-01-011Q)
Manual Steering
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
- Unscheduled Supplemental Services (Including Flushing Services And Additives) And Proper Use Of Gm Simplified Maintenance Schedules (12-06-01-008B)
Manual Trans
- Information On Driveline Clunk Noise (99-04-20-002O)
Mechanical
- Use Of Surface Conditioning Disks When Cleaning Gasket Sealing Surfaces And/Or Reused Parts (00-06-01-012N)
Mechanical - Hydraulic
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
- Hummer EV Pop/Creak Type Noise While Sitting Stationary And Turning Steering Wheel With Brakes Applied (PIT5872D)
Memory Modules
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
Mirrors
- Passengers Side Outside Mirror Reflection (PIT6286A)
- Oily Substance On Windshield Leaking From Moisture Sensor (PIC6086H)
Passive Restraints
- Seat Belt Comfort Guide Part Information (PIT6180A)
Procedures
- Odometer Servicing When Odometer Cannot Be Set To Actual Mileage (PIT4720F)
- Information On How To Have A Fuel Or Fluid Sample Tested (25-NA-065)
- Vehicle Noise Diagnosis And TAC Requests For Assistance With Noise Related Complaints (PIP5358D)
- Lin Bus Diagnostic Information (PIT5698E)
Restraints Control Systems
- Service Door Latch Message On When Deactivating The Child Lock (PIT6275)
Seats
- Seat Belt Comfort Guide Part Information (PIT6180A)
- 60% Rear Seat Will Not Fold Down After Using Power Release Switch (PIT6361)
- Rear Seat Belt Bezel Falls Off (24-NA-257)
Starter
- Diagnostic Tip: No Start/ Ignition Will Not Turn On/ No Power Due To A Can Bus 2 Issue/Lightning Strike/ Failed Over The Air Update (PIT5985J)
- Information On Use Of PICOSCOPE And PICOLOG For Battery Draw Monitoring/Intermittent Dead Battery (24-NA-229)
Steering Control Systems
- Rear Steering Inoperative DTCS U3000 / U1962 / U1961 (PIT6350A)
Sun Roof/T-Top/Convertible Top
- Rear And Side Tempered Glass Spots (Quench Marks) (PI0754G)
Suspension Control Systems
- Diagnostic Tip For Service Leveling System Message And DTC: C1197 Sym92 (PIT6144G)
- Service Leveling System/Speed Limited Message Due To Aftermarket Modifications (PIT5854C)
- Diagnostic Tip: Unable To Perform Trim Height Learn Or Trouble Accessing Pressure Data (PIT6255)
System
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
Towing
- Service Trailer Brake Message With DTC C1114 When Connected To A Trailer With A HYDRASTAR Electric Over Hydraulic Trailer Brake Actuator (PIT6212C)
- Check Trailer Wiring Message Displayed, Trailer Brake Disabled, And/Or DTC C1114 Stored When Pulling Trailer With A Battery Generator Or Solar Charger (23-NA-149)
Towing Systems
- Service Trailer Brake Message With DTC C1114 When Connected To A Trailer With A HYDRASTAR Electric Over Hydraulic Trailer Brake Actuator (PIT6212C)
Transmission Control Systems
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
TSB
- Warranty Administration - Adding CALIFORNIA Emissions Warranty For Customers Registering Their Vehicle In A CALIFORNIA Emissions State (U.S. Only) (25-NA-100)
Wheels & Tire System
- Tire Sidewall Irregularities (PIT4261J)
- Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion (Clean And Resurface Wheel Bead Seat) (08-03-10-006I)
- DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable To Relearn ETHERNET Cable Overlay For TCP ONSTAR Module (24-NA-166)
- Information On Accessory Bead Lock Capable Wheels With Decorative Trim Rings (24-NA-178)
- Chemical Staining, Pitting, Corrosion And/Or Spotted Appearance Of Chromed Aluminum Wheels (83-35-08)
Window Motors & Regulators
- Engineering Information - Side Door Windows Inoperative When Pressing The Window Switch (PIE0830)
- Passenger Side Windshield A-Pillar Speaker Grill Cover Falling Off/Loose/Not Flush (24-NA-226)
- Information On Wiper Blade Maintenance Tips (24-NA-164)
- Oily Substance On Windshield Leaking From Moisture Sensor (PIC6086H)
Wiper/Washer Systems
- Information On Wiper Blade Maintenance Tips (24-NA-164)
- Oily Substance On Windshield Leaking From Moisture Sensor (PIC6086H)
Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)
- J-35616-64B Or El-35616-58 Terminal Test Probe Information/Repair (PIT5074R)