Technical Service Bulletins
- A/C Compressor
- Accessories & Equipment
- Warranty Administration - Claim Submission For Vehicle Wide Programming (24-NA-132)
- Adding Attachments To TAC Cases In Dealer Case Management (PIP6015)
- Software Update On Gm ULTIUM Vehicles (PIT6065H)
- Concerns Or Questions Regarding Installation Of Dealer Installed Accessories (PIT3099U)
- General Motors Dealership Critical Equipment Requirements And Recommendations (05-00-89-029F)
- Over The Air (OTA) And In Market Enhancement (IME) FAQS (23-NA-125)
- Information On Transportation / Logistics Mode (23-NA-064)
- Information On Module Harvesting (22-NA-205)
- 2022 GMC Hummer EV New Model Features (21-NA-295)
- 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)
- Diagnostic Tip: Unable To Complete The Serial Data Authentication Configuration/ No Start Or Unable To Perform Theft Relearn After Replacing Or Programming A Module / DTC U1962 (PIT5832U)
- Front Floor Console Center Compartment Door Stuck Closed (25-NA-012)
- Multiple U-Code Diagnostic Information - With One Having Symptom Byte 71 (PIT5569C)
- Information On Obtaining TECHLINE Calibrations For Law Enforcement And Government Vehicles To Disable Or Enable Content (21-NA-135)
- Anti-Lock Brakes
- Anti-Theft Systems
- Key Code Security Rules And Information On Gm KEYCODE Look-Up Application (U.S. Only) (10-00-89-009F)
- Diagnostic Tip - Security Light On Intermittently / No Crank/No Start Or Start Stall / Keyless Access Vehicles May Display No Remote/Fob Detected / Poor Or No RKE Range / Service TPM DTC B3055, B3060, B3935, C0750, C0755, C0760, C0765, C0775 (PIC5650L)
- Theft Alarm Going Off At Random Times (PIT6086B)
- Information On Using El-52545 When Diagnosing Peps Transmitter Key Fobs (21-NA-061)
- Information On Passive Door Unlocking Inoperative And/Or Enabling And Disabling Of Passive Unlocking (18-NA-279)
- Warranty Administration - Transmitter Key Fob Warranty Replacement Requirements (21-NA-068)
- 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)
- Information On Ethylene Glycol In Transmission Fluid (08-07-30-035I)
- 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 Transmission Core Damage (24-NA-141)
- Information On Driveline Clunk Noise (99-04-20-002O)
- Information On Unnecessary Replacement Of Extension Housing And 1-2-3-4-5-Rev Clutch Piston Assembly For 8L45, 8L90 Automatic Transmissions (22-NA-246)
- Diagnostic Tip On Avoiding Torque Converter Or Crankshaft Damage While Diagnosing Noise Concerns (PIP5640A)
- Battery Management Systems
- Engineering Information - Information On Selective Battery Pack Replacement For Analysis (PIE0753I)
- Service High Voltage Message With Mil And/Or DTCS U2BF2, U2BF3, And/Or U2BF6 (PIT6129B)
- Software Update On ULTIUM Vehicles (24-NA-143)
- Information On Opening / Closure Instructions For DDR (Damaged, Defective, Recalled) High Voltage Battery Dunnage / Container (22-NA-005)
- Warranty Administration - North AMERICAN Charging Standard (NACS) Dc Adapter Warranty Claim Information (U.S. Only) (24-NA-202)
- Engineering Information - (Mil) On (DIC), Bet And BEV3 ULTIUM Packs Setting Moving Average Voltage Detection (MAVD) And Delta Voltage Rest Period (DVRP) Fault Codes, DTC'S U3620, U3622, U3624, U3626, U3628, U362A, U362C, U362E, U3630, U3632, U3634 Set (PIE0788C)
- Hybrid/EV Charging Issue Information And Data Collection Worksheet (24-NA-015)
- Service High Voltage With Mil & HV Battery DTCS (PIP5953)
- Service High Voltage With Mil & Voltage Sensor Circuit DTCS (PIP5954)
- Information On High Voltage Label On X6 Branch Of The BCM Wiring (23-NA-182)
- Diagnostic Aid: Amber Light On Dual Level Portable Charge Cord Set (23-NA-036)
- 2022 Hummer EV - P0D9A, P298C, & P0E5F (PIT5904)
- 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)
- Multiple U-Code Diagnostic Information - With One Having Symptom Byte 71 (PIT5569C)
- Service Door Latch, Power Windows, Door Locks And Outside Mirrors Inoperative, Unwanted Theft Alarm Activation, Random Messages Displayed On Driver Information Center (DIC) (22-NA-144)
- Body Interior
- Procedure For Emailing Global Diagnostic System 2 (GDS2) Session Log To Gm TAC (Us And CANADA Dealers Only) (PIP4902S)
- 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)
- Diagnostic Tip - Security Light On Intermittently / No Crank/No Start Or Start Stall / Keyless Access Vehicles May Display No Remote/Fob Detected / Poor Or No RKE Range / Service TPM DTC B3055, B3060, B3935, C0750, C0755, C0760, C0765, C0775 (PIC5650L)
- Software Update On Gm ULTIUM Vehicles (PIT6065H)
- Information On Setting Up PICOSCOPE To Diagnose Controller Area Network (Can) Circuits (23-NA-189)
- Black Radio Display Screen (Triangle And Camera With Slash Through It) With DTCS B1A62 82 And 86 Setting Current In Video Processing Module (VPM) (23-NA-007)
- History DTCS To Ignore / No SES / No Malfunction Indicator Lamps / No Warning Message (PIT5882A)
- Brakes Control Systems
- Information On Automatic Emergency Braking Event (AEB) Issues (25-NA-118)
- Information On Vehicles After Alignment That Veer Biased In Lane Immediately After SUPERCRUISE Engagement (PIT6115)
- Information On EBOOST Applications (K160 Brake System Control Module) For False DTC C05B0 Setting After A Brake Inspection, Brake Pad Replacement, Or Any Other Work That Would Require Caliper Piston To Be Reseated (22-NA-247)
- Charging Systems
- Warranty Administration - ULTIUM POWERUP Level 2 Home Charger Warranty Claim Information (22-NA-215)
- 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)
- Information On High Voltage Label On X6 Branch Of The BCM Wiring (23-NA-182)
- Collision/Avoidance
- Image Processing Module/Video Processing Gen2 Module Reset Instructions (PIT6369A)
- Amber Automatic Emergency Braking Disable Icon Illuminated Or During Start Up Forward Collision System Reduced Displayed On DIC (PIT5551R)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- Super Cruise Unavailable Message (PIT6059B)
- Service Drivers Assist Message With U3000 Sym 49 Set In The K180 Drivers Monitoring Module (PIT6191)
- Hummer EV Service Driver Assist Message With DMS DTC: U3000 Or B0126 (PIT6055D)
- Hummer EV Service Driver Assist Message With DTC: B2BA1 Set In The K179 Automated Map Module (PIT6152A)
- Grunt Noise With Adaptive Cruise Or One-Pedal Drive (24-NA-034)
- Automatic Emergency Braking (AEB) Forward Collision Icon Lamp On With No DTCS Present (22-NA-126)
- 2022 Hummer EV Forward Collision System Unavailable Message Displayed In The Drivers Information Center (PIT5891)
- 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)
- Mobile Phone Inductive Charger Bin Liner Installation Tips (24-NA-024)
- Wireless Phone Charger Inoperative With Apple IPHONE 15 Models (PIT6097C)
- Wireless Charging Is Intermittent When Using IPHONE And SAMSUNG Phones At Offset Positions (22-NA-235)
- Cellphone Not Charging Or USB Receptacle Inoperative Diagnostic (22-NA-238)
- Cooling Fan
- Cooling System (Mechanical)
- Cruise Control Systems
- SUPERCRUISE Inoperative With Current Or History DTC: U1624 (PIT6056A)
- Super Cruise Unavailable Message (PIT6059B)
- SUPERCRUISE Dropping Out After Driving 30 - 60 Seconds And/Or Service Driver Assist Message Illuminated With DTCS U1626, U3000, And/Or B2BA1 (PIT6139D)
- Hummer EV Service Driver Assist Message With DTC: B2BA1 Set In The K179 Automated Map Module (PIT6152A)
- SUPERCRUISE Unavailable - No Road Info: Road Expansion (24-NA-090)
- Grunt Noise With Adaptive Cruise Or One-Pedal Drive (24-NA-034)
- DTC U3000 Setting In Automated Map Module (HDLM) - SUPERCRUISE Unavailable (24-NA-027)
- Differentials & Drive Axles
- Electric Converters and Controllers
- 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)
- Software Update On ULTIUM Vehicles (24-NA-143)
- Vehicle Wide Programming Instructions (24-NA-113)
- High Voltage Drive Motor Battery - TAC Approval And Exchange Program For GMC Hummer EV, SILVERADO EV, & BRIGHTDROP (PIT6021)
- Electronic Suspension
- 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)
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- 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)
- Multiple U-Code Diagnostic Information - With One Having Symptom Byte 71 (PIT5569C)
- Information On Improper Cabin A/C And/Or Heating Performance, DTC'S P1C01 And/Or B3A66 Set (24-NA-131)
- Service Programming System (SPS) Errors (E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, Or E6961) (PI0592I)
- Technician May Inadvertently Miss Diagnose And Replace The Wrong Drive Unit Fluid Pump - DTC P31A0 (24-NA-059)
- Information On Sag Or Hesitation On Acceleration (PIP4112S)
- Diagnostic Aids For Gas Engine Misfire/Rough Running With DTC P0300-P0308 And/Or DTC P050D (PIP5628G)
- Engineering Information - Malfunction Indicator Lamp (Mil) Illuminated On Driver Information Center (DIC), DTCS P31A0, P31A1, P31A2, P31A3, P31A4 And/Or P31A5 Set (PIE0746)
- Hummer EV Check Engine Lamp & Service High Voltage System Message With DTC: P0494 (PIT5925B)
- Diagnostic Tip For Malfunction Indicator Lamp (Mil) Illuminated, Excessive Smoke From Tail Pipe - DTC P2002, P226D And/Or P244A Set (16-NA-380)
- Diagnostic Tip For Malfunction Indicator Lamp (Mil) Illuminated - DTC P0442 And/Or P0455 Set (21-NA-124)
- Stop/Start System Inhibited / IBS / Battery Monitor With Module Malfunction Indicator Light (Mil) Illuminated - DTC U152D, P15FF, P305D, P305E, U01B0 Set (22-NA-214)
- 2022 Hummer EV No Start, No Propulsion, Service Park Brake System Message Or Dead 12 Volt Battery After A Over The Air Update (OTA) (PIT5944)
- Diagnostic Tip: Poor Engine Performance Or CEL On In Cold Ambient Temperatures On Vehicles Equipped With Turbocharged Gasoline Engines May Set One Or More Of The Following DTCS P0299 P2227 (PIP5540J)
- Entertainment Systems
- OTA Failure Or Download Will Not Complete (PIT5966E)
- Short Audio Cut Out At Startup (PIT6367A)
- 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)
- Update Failed See Dealer To Restore System Screen Recovery (PIT6209E)
- Radio Staying On After Power Off And Opening The Driver Door (PIT6118B)
- Wireless CARPLAY Or Android Auto Will Not Launch (PIC6551)
- Radio Software Version V167 Update (PIT5971B)
- Radio Software Version Z171 - Multiple Updates For IOK (24-NA-052)
- Loss Of Applications On Right Side Of Radio Screen (PIT6005)
- Radio Education - RPO IOK Google Built In Radio (22-NA-096)
- MDI 2 Required For Vehicles With Vehicle Intelligence Platform (VIP) (20-NA-018)
- Exhaust
- 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)
- Underbody Component Corrosion (PI0281L)
- MULTIPRO / MULTIFLEX Tailgate Drops Too Fast With Gm Accessory Kicker Audio System Installed (PIT5909C)
- Power Tonneau Cover Diagnostic Tips (24-NA-028)
- PAINTLESS Dent Repair Process (99-08-51-001F)
- Parts Alert Hummer EV Power Tonneau Cover (PIT5898)
- Exterior Lights
- Exterior Lamp Condensation And Water Leak Information And Replacement Guidelines (01-08-42-001Q)
- 2022 Hummer EV Exterior Lamps Flicker Every 8 Seconds Along With A Momentary Pause Of The Windshield Wipers And Turn Signal Click Clack Sound Effect With Current Or History DTC: P0607 (PIT5964B)
- Hummer EV Front Identification/Roof Marker Lamp Parts Restriction (PIT6091)
- Frames, Subframes & Crossmembers
- Fuel System
- Fuses & Circuit Breakers
- 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
- Hazardous Waste Material
- Headlights
- Heated Glass/Defoggers
- Hoist/Jack
- HVAC Control Systems
- Identification
- Ignition Switch/Steering Lock
- Key Code Security Rules And Information On Gm KEYCODE Look-Up Application (U.S. Only) (10-00-89-009F)
- Diagnostic Tip - Security Light On Intermittently / No Crank/No Start Or Start Stall / Keyless Access Vehicles May Display No Remote/Fob Detected / Poor Or No RKE Range / Service TPM DTC B3055, B3060, B3935, C0750, C0755, C0760, C0765, C0775 (PIC5650L)
- Ignition System
- Infotainment
- IOK Radio Issues (PIC6602C)
- Loss Module Communication After Vehicle Wide Programming (VWP) (PIT6215B)
- Google Maps Application Update (PIT6151B)
- Updated Warranty And Policy Exchange Program For Electronic Products (U.S. And CANADA) (08-08-44-029N)
- SUPERCRUISE Dropping Out After Driving 30 - 60 Seconds And/Or Service Driver Assist Message Illuminated With DTCS U1626, U3000, And/Or B2BA1 (PIT6139D)
- DTC U3000 Setting In Automated Map Module (HDLM) - SUPERCRUISE Unavailable (24-NA-027)
- Active Navigation Session Pop Up (PIT5876B)
- MDI 2 Required For Vehicles With Vehicle Intelligence Platform (VIP) (20-NA-018)
- Interior/Exterior Trim
- Information On Proper Use Of Floor Mats (10-08-110-001L)
- Front Floor Console Center Compartment Door Stuck Closed (25-NA-012)
- Hummer EV Water Leak Diagnostic Tips (24-NA-029)
- Mobile Phone Inductive Charger Bin Liner Installation Tips (24-NA-024)
- Information On Front License Plate Adapter Bracket Installation During PDI (22-NA-039)
- Information On Accessory All-Weather Floor Liners And Flat Mats Warped Or Mis-SHAPEN (21-NA-026)
- 2022 Hummer EV Drivers Or Passengers Front Door Panel Trim Cover Keeps Falling Off (PIT5933A)
- Information On Front Trunk Cargo Tie Down Loop Bezel Design Change (22-NA-125)
- Information On Front Door Trim Panel Design Change With Matching Door Design Change (22-NA-102)
- Information On Accessory Rocker Panel Protector Lower Bolts Bottom Out Before Achieving Torque (21-NA-294)
- Information On Rear Seat Belt Opening Bezel Service Part Not Seating Flush With C-Pillar Trim When Installed (21-NA-216)
- 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)
- Information On Gasoline Engine Replacement Guidelines After Connecting Rod Or Crankshaft Main Bearing Damage - Replace Oil Cooler, Oil Cooler Lines, Oil Tank And Turbocharger (22-NA-074)
- Information For Engine Concerns Resulting From Lack Of Scheduled Maintenance, Improper Service Or Aftermarket Calibrations (16-NA-222)
- 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)
- Information On Vehicles After Alignment That Veer Biased In Lane Immediately After SUPERCRUISE Engagement (PIT6115)
- Manual Trans
- Mechanical
- Use Of Surface Conditioning Disks When Cleaning Gasket Sealing Surfaces And/Or Reused Parts (00-06-01-012N)
- Engine Repair Tip For Installation Of Pistons (PI1394B)
- Information On Engine Block Cracked At Head Bolt Hole Locations (23-NA-141)
- Information On Gasoline Engine Replacement Guidelines After Connecting Rod Or Crankshaft Main Bearing Damage - Replace Oil Cooler, Oil Cooler Lines, Oil Tank And Turbocharger (22-NA-074)
- Information For Engine Concerns Resulting From Lack Of Scheduled Maintenance, Improper Service Or Aftermarket Calibrations (16-NA-222)
- Repair Guidelines For Engine Component Wear (18-NA-073)
- Diagnostic Tips For Knocking, Rattle, Squeak And/Or Squeal Type Noise From Engine - Engine Replacement Recommendations For HFV6 Gen 1 And Gen 2 (PIP5216G)
- 2022 Hummer EV No Start, No Propulsion, Service Park Brake System Message Or Dead 12 Volt Battery After A Over The Air Update (OTA) (PIT5944)
- Diagnostic Tip On Avoiding Torque Converter Or Crankshaft Damage While Diagnosing Noise Concerns (PIP5640A)
- Mechanical - Hydraulic
- Memory Modules
- Mirrors
- Passive Restraints
- 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)
- Website For AFIT, TPM, Gr8, MIT And PICO Scope Updates (PIP4723H)
- El-52800 - Diagnostic And Charge Battery Station (DCBS) - FAQS (23-NA-055)
- Information On Forklift And Vehicle Hoist Requirements To Support Electric Vehicle (EV) High Voltage Battery Handling (U.S. Only) (22-NA-114)
- Information On Battery Service Guide For Electric Vehicles (EV) (22-NA-141)
- Restraints Control Systems
- Seats
- Starter
- OTA Failure Or Download Will Not Complete (PIT5966E)
- Diagnostic Tip: Unable To Complete The Serial Data Authentication Configuration/ No Start Or Unable To Perform Theft Relearn After Replacing Or Programming A Module / DTC U1962 (PIT5832U)
- 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)
- Warranty Administration - Lithium-Ion Battery Exchange Process And Transaction Submission Information (18-NA-180)
- AGM Battery Frequently Asked Questions (FAQS) (23-NA-044)
- Information On Battery Service Guide For Electric Vehicles (EV) (22-NA-141)
- Steering Control Systems
- Sun Roof/T-Top/Convertible Top
- 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)
- Hummer EV Diagnostic Aid For Vehicles Setting DTC U138D Or U1155 And U043A Or U0139 (PIT6108)
- Diagnostic Tip: Unable To Perform Trim Height Learn Or Trouble Accessing Pressure Data (PIT6255)
- Hummer EV Air Suspension DTCS And Performance Concerns/ Vehicle Sits UNLEVEL / Leans / Sags / Leveling Unavailable Message / Speed Limited Message / Service Air Suspension Message (PIT5911B)
- System
- Aftermarket ALDL Or DLC Interface Devices Causing Multiple Issues (13-08-116-001K)
- Information On Sag Or Hesitation On Acceleration (PIP4112S)
- Diagnostic Tip: Poor Engine Performance Or CEL On In Cold Ambient Temperatures On Vehicles Equipped With Turbocharged Gasoline Engines May Set One Or More Of The Following DTCS P0299 P2227 (PIP5540J)
- Towing
- Transmission Control Systems
- TSB
- Wheel Alignment
- 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)
- Multiple U-Code Diagnostic Information - With One Having Symptom Byte 71 (PIT5569C)
- 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)
- Gm TAC Support Of Vehicle Vibration Complaints - U.S. And CANADA Dealers Only (PIT5214F)
- Vibration Shortly After Tires Are Mounted/Preventing Vibration From Wheel Slip (Tire Sliding On Wheel) (12-03-10-001E)
- Gm Accessories - New Dealer Installed LPO Wheel Installation And Return Process - Beginning January 1ST , 2023 (U.S. Dealers Only) (22-NA-257)
- Wiring Diagrams
- Wiring System (Data Link Connectors, Pwr Dist., Grnd Dist.)