P0068 on GMC vehicles Air flow, manifold pressure and throttle position do not add up — often an intake leak
P0068 is named on 8 GMC model years (2016–2018): 14 manufacturer filings and 0 owner reports in NHTSA’s files, across Acadia, Canyon, Savana, Sierra 2500HD, Sierra 3500HD.
Which GMC model years name P0068
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 GMC Acadia | Electrical System | 3 | — |
| 2017 GMC Canyon | Electrical System | 3 | — |
| 2016 GMC Canyon | Electrical System | 3 | — |
| 2018 GMC Sierra 2500HD | Engine | 1 | — |
| 2017 GMC Savana | Engine | 1 | — |
| 2017 GMC Sierra 2500HD | Engine | 1 | — |
| 2017 GMC Sierra 3500HD | Engine | 1 | — |
| 2016 GMC Sierra 3500HD | 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.
GMC filings that name P0068
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0068. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5529 Service bulletin2017-10-20 · Electrical System
- This Preliminary information communicates additional diagnosticsand repairto assist in resolving a malfunction indicator lampillumination due to any combination of diagnostic trouble codes P0068 P0101 P0106 P0171 P0131 P0137 P0324 P0326 P0331 P0506.
- PIP5529A Service bulletin2018-02-28 · Electrical System — Instrument Cluster/Panel
- This Preliminary information communicates additional diagnosticsand repairto assist in resolving a malfunction indicator lampillumination due to any combination of diagnostic trouble codes P0068 P0101 P0106 P0171 P0131 P0137 P0324 P0326 P0331 P0506.
- PIP5529B Service bulletin2019-09-06 · Electrical System
- This Preliminary information communicates additional diagnostics and repair to assist in resolving a malfunction indicator lamp illumination due to any combination of diagnostic trouble codes P0068 P0101 P0106 P0171 P0131 P0137 P0324 P0326 P0331 P0506.
- PIP4578B Service bulletin2017-12-18 · Engine And Engine Cooling
- This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578.
What P0068 means
Source: SAE J2012 / OBD-IIAir flow, manifold pressure and throttle position do not add up — often an intake leak.
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 P0068 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 14 manufacturer filings and 0 owner reports naming P0068 on 8 GMC model years (2016–2018). 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 P0068 appear on most?
2017 Acadia (3 documents), 2017 Canyon (3 documents), 2016 Canyon (3 documents).
Does P0068 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.