P0018 on GMC vehicles
P0018 is named on 16 GMC model years (2016–2023): 57 manufacturer filings and 2 owner reports in NHTSA’s files, across Acadia, Canyon, Terrain.
Which GMC model years name P0018
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 GMC Acadia | Engine | 6 | 1 |
| 2020 GMC Acadia | Equipment | 5 | — |
| 2019 GMC Acadia | Engine | 5 | — |
| 2019 GMC Canyon | Equipment | 5 | — |
| 2018 GMC Acadia | Engine | 5 | — |
| 2018 GMC Canyon | Engine | 5 | — |
| 2017 GMC Canyon | Engine | 5 | — |
| 2020 GMC Canyon | Equipment | 4 | — |
| 2016 GMC Acadia | Equipment Adaptive/Mobility | 4 | — |
| 2016 GMC Canyon | Equipment Adaptive/Mobility | 4 | — |
| 2016 GMC Terrain | Equipment Adaptive/Mobility | 4 | — |
| 2021 GMC Acadia | Engine | 2 | — |
| 2023 GMC Acadia | Electrical System | 1 | — |
| 2022 GMC Canyon | Unspecified | — | 1 |
| 2021 GMC Canyon | Engine | 1 | — |
| 2017 GMC Terrain | Engine | 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.
What GMC owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
But for documentation purposes, it involves servicing the safety restraint system and error codes P0018 and P0021
GMC filings that name P0018
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0018. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP3423P Service bulletin2018-08-09 · Engine
- This Preliminary Information communication provides information to the technician that Diagnostic Trouble Codes P0016, P0017, P0018, P0019, P0008 or P0009 may be set. Technician will need to inspect for loose timing chains or tensioners. If after following Service Information diagnostics the root cause is not found inspect the reluctor for the crankshaft sensor. If the reluctor has moved then repl
- PIP5730 Service bulletin2020-05-26 · Engine
- This Preliminary information communicates additional diagnostic information for DTC's P0016 and P0018.
- PIP5730A Service bulletin2020-12-29 · Equipment
- This Preliminary information communicates additional diagnostic information for DTC's P0016 and P0018.
- PIP5730A Service bulletin2020-12-29 · Equipment — Other — Owners/Service/Other Manual
- This Preliminary information communicates additional diagnostic information for DTC's P0016 and P0018.
- PIP3423L Service bulletin2015-10-01 · Equipment Adaptive/Mobility
- This Preliminary Information communication provides information to the technician that Diagnostic Trouble Codes P0016, P0017, P0018, P0019, P0008 or P0009 may be set. Technician will need to inspect for loose timing chains or tensioners. If after following Service Information diagnostics the root cause is not found inspect the reluctor for the crankshaft sensor. If the reluctor has moved then repl
- PIP3423M Service bulletin2015-10-19 · Equipment Adaptive/Mobility
- This Preliminary Information communication provides information to the technician that Diagnostic Trouble Codes P0016, P0017, P0018, P0019, P0008 or P0009 may be set. Technician will need to inspect for loose timing chains or tensioners. If after following Service Information diagnostics the root cause is not found inspect the reluctor for the crankshaft sensor. If the reluctor has moved then repl
- PIP3423N Service bulletin2017-08-23 · Engine
- This Preliminary Information communication provides information to the technician that Diagnostic Trouble Codes P0016, P0017, P0018, P0019, P0008 or P0009 may be set. Technician will need to inspect for loose timing chains or tensioners. If after following Service Information diagnostics the root cause is not found inspect the reluctor for the crankshaft sensor. If the reluctor has moved then repl
- PIP5730B Service bulletin2021-03-09 · Engine
- This Preliminary information communicates additional diagnostic information for DTC's P0016 and P0018.
- 23-NA-091 Service bulletin2023-05-11 · Engine And Engine Cooling
- This service bulletin provides information for dealers/technicians on Rough Idle, Malfunction Indicator Lamp (MIL) Illuminated After Engine Repairs with DTCs P0016 and/or P0018 Set.
What P0018 means
Source: SAE J2012 / OBD-IIP0018 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 P0018 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 57 manufacturer filings and 2 owner reports naming P0018 on 16 GMC model years (2016–2023). 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 P0018 appear on most?
2017 Acadia (7 documents), 2020 Acadia (5 documents), 2019 Acadia (5 documents).
Does P0018 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.