AI Damage2026 GMC Sierra 3500: common problems
The maker issued 170 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 170
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 4 |
| Engine | 0 | 0 | 4 |
| Fuel/propulsion system | 0 | 0 | 2 |
| Powertrain | 0 | 0 | 2 |
| Forward collision avoidance | 0 | 0 | 1 |
| Service brakes | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
| Other | 0 | 0 | 156 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Customer Satisfaction Program
Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not drilled properly. Dealers are to inspect and if necessary, replace the engine.
- This Preliminary information communicates to dealers steps to follow to obtain an IOK radio
- This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is…
This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
- This preliminary information is for technicians that may see DTCs that are history and should not perform…
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
- This Preliminary information communicates to dealers a procedure to reset the radio
- This Preliminary information communicates that Engineering is working on a resolution and no parts should…
This Preliminary information communicates that Engineering is working on a resolution and no parts should be replaced at this time.
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it
- This preliminary information communicates an issue with a service column lock message and DTC U3000
Engineering is working on the issue and in the meantime dealerships are to reset/clear the DTC and perform four sleep cycles to verify the DTC does not return.
- This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless…
This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a…
- Certain vehicles may have received transmission mounting bolts that do not meet expected hardness…
Certain vehicles may have received transmission mounting bolts that do not meet expected hardness specifications. Loose or failed bolts may result in hard shifting from the transmission and/or noise. Dealers will…
- This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a…
- This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless…
This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a…
NHTSA lists 170 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2026 GMC Sierra 3500?
There are no owner complaints in the NHTSA data for this year; the data comes from 170 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2026 GMC Sierra 3500?
NHTSA lists 170 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2026 GMC Sierra 3500 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2026 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.