11037555
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
2020 Chevrolet 3500 problems
NHTSA lists 2 complaints for the 2020 Chevrolet 3500, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.
Data build 2026-10-09.
NHTSA lists this vehicle as CHEVROLET 3500.
At a glance
- Complaints
- 2
- With crash
- 0
- With fire
- 0
- With injury (complaints)
- 0
- Injuries
- 0
- Deaths
- 0
- Recalls
- 0
- Do not drive recalls
- 0
- Park outside recalls
- 0
- Recall potential units (maximum)
- Unavailable
- Investigations
- 0
- Open investigations
- 0
- Manufacturer communications
- 392
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
| System | Complaints | Share of this vehicle's complaints |
|---|---|---|
| ELECTRICAL SYSTEM | 1 | 50.0% |
| POWER TRAIN | 1 | 50.0% |
| System | Subsystem | Complaints |
|---|---|---|
| ELECTRICAL SYSTEM | INTEGRATED TRAILER BRAKE CONTROL | 1 |
One complaint can name several systems, so shares can add to more than 100 percent.
Model-generated complaint tags
These labels are model-generated, not NHTSA data.
| Label | Count | Share of tagged | Mean confidence |
|---|---|---|---|
| electrical electronic | 1 | 50.0% | 1.00 |
| mechanical failure | 1 | 50.0% | 0.63 |
| Label | Count | Share of tagged | Mean confidence |
|---|---|---|---|
| low | 1 | 50.0% | 0.70 |
| moderate | 1 | 50.0% | 0.73 |
Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 2 tagged complaints of 2 complaints (100.0%).
Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.
Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.
Recalls
See new recalls and investigations this week.
0 recalls.
Investigations
0 investigations; 0 open.
Manufacturer communications
392 manufacturer communications.
| System | Count |
|---|---|
| EQUIPMENT | 133 |
| UNKNOWN OR OTHER | 70 |
| ELECTRICAL SYSTEM | 69 |
| ENGINE AND ENGINE COOLING | 68 |
| ENGINE | 35 |
| POWER TRAIN | 34 |
| WHEELS | 25 |
| EQUIPMENT ADAPTIVE/MOBILITY | 17 |
11037253
Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11035340
Date: 2026-07-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
PI to help diagnose A/C concern
11030974
Date: 2026-04-01. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
11030091
Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11030092
Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
11029950
Date: 2026-03-02. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
11027697
Date: 2026-01-16. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
11027701
Date: 2026-01-14. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
11027601
Date: 2026-01-08. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Notes on this record
- Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
- System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
- Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
- A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.
Other names NHTSA uses
None listed.
Matched NHTSA models
| NHTSA model label | Complaints |
|---|---|
| 3500 | 2 |
Same model, other years
- 2005 3500: 0 complaints
- 2006 3500: 0 complaints
- 2007 3500: 0 complaints
- 2008 3500: 0 complaints
- 2014 3500: 0 complaints
- 2015 3500: 0 complaints
- 2016 3500: 5 complaints
- 2017 3500: 1 complaints
- 2018 3500: 3 complaints
- 2019 3500: 2 complaints
- 2020 3500 (current year): 2 complaints
- 2021 3500: 0 complaints
- 2022 3500: 3 complaints
Other Chevrolet models, 2020
- Silverado 1500: 733 complaints
- Equinox: 309 complaints
- Traverse: 230 complaints
- Blazer: 220 complaints
- Malibu: 198 complaints
- Bolt EV: 174 complaints
- Silverado 2500: 108 complaints
- Trax: 96 complaints
Sources
Get this record as JSON
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curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Chevrolet&model=3500&year=2020"Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.