C0045 on GMC vehicles A fault in the left rear wheel speed sensor circuit
C0045 is named on 5 GMC model years (2016–2019): 9 manufacturer filings and 0 owner reports in NHTSA’s files, across Canyon, Sierra 2500HD, Terrain.
Which GMC model years name C0045
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 GMC Canyon | Service Brakes | 3 | — |
| 2018 GMC Sierra 2500HD | Service Brakes | 2 | — |
| 2016 GMC Terrain | Equipment | 2 | — |
| 2019 GMC Canyon | Service Brakes | 1 | — |
| 2017 GMC Terrain | Suspension | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
GMC filings that name C0045
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names C0045. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIT5499 Service bulletin2016-03-15 · Service Brakes, Air — Antilock
- This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master cylinder fluid level is full or a Service Trailer Brake message on the Driver Information Center. Technician may find codes C0035, C0040, C0045, C0050, C0055, C0267, U0121, U0415 o
- PIT5499A Service bulletin2019-03-04 · Service Brakes, Hydraulic — Antilock/Traction Control/Electronic Limited Slip
- This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master cylinder fluid level is full or a Service Trailer Brake message on the Driver Information Center. Technician may find codes C0035, C0040, C0045, C0050, C0055, C0267, U0121, U0415 o
- PIT5499B Service bulletin2020-05-20 · Air Bags
- This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master cylinder fluid level is full or a Service Trailer Brake message on the Driver Information Center. Technician may find codes C0035, C0040, C0045, C0050, C0055, C0267, U0121, U0415 o
- PIE0456 Service bulletin2018-03-07 · Service Brakes, Air — Antilock
- This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Service Stabiltak, ABS, Service Trailer Brake Light, and/or Service Traction Control Indicator Illuminated with DTC C0045 or C0050 Set.
- PIE0456A Service bulletin2018-04-10 · Service Brakes, Hydraulic — Antilock/Traction Control/Electronic Limited Slip
- This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Service Stabiltak, ABS, Service Trailer Brake Light, and/or Service Traction Control Indicator Illuminated with DTC C0045 or C0050 Set.
- PIT5427A Service bulletin2015-09-21 · Equipment — Other — Owners/Service/Other Manual
- This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp, service Antilock Braking System, Service Stabilitrak, Service All Wheel Drive, Service Suspension Control, or Hard Steering. Technician may find the following Diagnostic Trouble Codes stored C0196, C0186, C0287, C0710, C0045, C0050, C0800, U00
- PIT5427B Service bulletin2018-11-19 · Power Train
- This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp, service Antilock Braking System, Service Stabilitrak, Service All Wheel Drive, Service Suspension Control, or Hard Steering. Technician may find the following Diagnostic Trouble Codes stored C0196, C0186, C0287, C0710, C0045, C0050, C0800, U00
What C0045 means
Source: SAE J2012 / OBD-IIA fault in the left rear wheel speed sensor circuit.
A stored code names the test that failed, never the part that caused it. The record above is what GMC and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs C0045 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 9 manufacturer filings and 0 owner reports naming C0045 on 5 GMC model years (2016–2019). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which GMC models does C0045 appear on most?
2016 Canyon (3 documents), 2018 Sierra 2500HD (2 documents), 2016 Terrain (2 documents).
Does C0045 on a GMC mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.