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.
2018 GMC Sierra Denali problems
NHTSA lists 17 complaints for the 2018 GMC Sierra Denali, 0 of them mention a crash and 0 mention a fire. 1 complaints mention an injury, with 1 injuries and 0 deaths reported.
Data build 2026-10-10.
NHTSA lists this vehicle as GMC SIERRA DENALI.
At a glance
- Complaints
- 17
- With crash
- 0
- With fire
- 0
- With injury (complaints)
- 1
- Injuries
- 1
- 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
- 948
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 |
|---|---|---|
| ENGINE | 5 | 29.4% |
| SERVICE BRAKES | 4 | 23.5% |
| STRUCTURE | 4 | 23.5% |
| EXTERIOR LIGHTING | 3 | 17.6% |
| STEERING | 3 | 17.6% |
| ELECTRONIC STABILITY CONTROL (ESC) | 2 | 11.8% |
| POWER TRAIN | 2 | 11.8% |
| SUSPENSION | 1 | 5.9% |
| UNKNOWN OR OTHER | 1 | 5.9% |
| WHEELS | 1 | 5.9% |
| System | Subsystem | Complaints |
|---|---|---|
| STRUCTURE | BODY | 3 |
| EXTERIOR LIGHTING | HEADLIGHTS | 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 |
|---|---|---|---|
| loss of control | 5 | 29.4% | 0.90 |
| mechanical failure | 5 | 29.4% | 0.75 |
| visibility or lighting | 3 | 17.6% | 0.98 |
| noise or comfort | 2 | 11.8% | 0.73 |
| unclear | 2 | 11.8% | 0.95 |
| Label | Count | Share of tagged | Mean confidence |
|---|---|---|---|
| moderate | 8 | 47.1% | 0.85 |
| low | 6 | 35.3% | 0.68 |
| high | 3 | 17.6% | 0.80 |
Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 17 tagged complaints of 17 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
948 manufacturer communications.
| System | Count |
|---|---|
| EQUIPMENT | 341 |
| ENGINE AND ENGINE COOLING | 179 |
| ELECTRICAL SYSTEM | 155 |
| POWER TRAIN | 106 |
| ENGINE | 104 |
| UNKNOWN OR OTHER | 66 |
| EQUIPMENT ADAPTIVE/MOBILITY | 55 |
| FUEL SYSTEM, GASOLINE | 50 |
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.
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.
11025755
Date: 2025-11-20. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customera s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If
11023091
Date: 2025-09-09. Type: Other. Systems: UNKNOWN OR OTHER.
New Vehicle Monitoring Programs Section in IVH
11022084
Date: 2025-08-14. 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 |
|---|---|
| SIERRA DENALI | 17 |
Same model, other years
- 2002 Sierra Denali: 13 complaints
- 2003 Sierra Denali: 0 complaints
- 2004 Sierra Denali: 11 complaints
- 2005 Sierra Denali: 4 complaints
- 2006 Sierra Denali: 5 complaints
- 2007 Sierra Denali: 1 complaints
- 2008 Sierra Denali: 18 complaints
- 2009 Sierra Denali: 7 complaints
- 2010 Sierra Denali: 10 complaints
- 2011 Sierra Denali: 28 complaints
- 2012 Sierra Denali: 10 complaints
- 2013 Sierra Denali: 8 complaints
- 2014 Sierra Denali: 14 complaints
- 2015 Sierra Denali: 22 complaints
- 2016 Sierra Denali: 30 complaints
- 2017 Sierra Denali: 14 complaints
- 2018 Sierra Denali (current year): 17 complaints
- 2019 Sierra Denali: 26 complaints
- 2020 Sierra Denali: 11 complaints
Other GMC models, 2018
- Acadia: 396 complaints
- Sierra 1500: 304 complaints
- Terrain: 223 complaints
- Yukon: 69 complaints
- Yukon XL: 53 complaints
- Canyon: 52 complaints
- Sierra 2500: 35 complaints
- Sierra 3500: 14 complaints
Sources
Get this record as JSON
The free rate-limited demo needs no key.
curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=GMC&model=Sierra+Denali&year=2018"Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.