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Diagnostic trouble code · GMC

P0747 on GMC vehicles

P0747 is named on 26 GMC model years (2018–2024): 139 manufacturer filings and 21 owner reports in NHTSA’s files, across Yukon, Sierra, Terrain, Sierra 2500HD, Sierra 3500HD and 1 more.

Powertrain 26 model years 139 manufacturer filings 21 owner reports

Which GMC model years name P0747

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2022 GMC YukonPower Train14—
2021 GMC YukonPower Train121
2023 GMC SierraPower Train36
2022 GMC SierraPower Train62
2019 GMC TerrainPower Train8—
2018 GMC TerrainPower Train8—
2020 GMC Sierra 2500HDPower Train61
2020 GMC Sierra 3500HDPower Train61
2023 GMC Sierra 2500HDPower Train33
2022 GMC Sierra 2500HDPower Train6—
2022 GMC Sierra 3500HDPower Train6—
2021 GMC SierraPower Train6—
2021 GMC Sierra 2500HDPower Train6—
2021 GMC Sierra 3500HDPower Train6—
2020 GMC SierraPower Train6—
2020 GMC TerrainPower Train6—
2024 GMC Sierra 2500HDPower Train32
2024 GMC TerrainPower Train5—
2023 GMC Sierra 3500HDPower Train32
2020 GMC AcadiaPower Train5—
2024 GMC AcadiaPower Train4—
2024 GMC Sierra 3500HDPower Train31
2023 GMC YukonPower Train12
2021 GMC TerrainPower Train3—
2024 GMC YukonPower Train2—
2021 GMC AcadiaPower Train2—

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.

Power Train 145 Engine 5 Wheels 4 Electrical System 2
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What GMC owners said

Source: NHTSA complaint database

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

The dealer documented DTC P0747, identified as “Transmission Control Solenoid Valve 1 Stuck On,” and recommended replacement of the transmission control valve body at a quoted cost of $2,665.85 plus tax
2023 GMC Sierra Aug 21, 2026 NHTSA owner report

GMC filings that name P0747

Source: NHTSA manufacturer communications

Bulletins and campaigns GMC filed with NHTSA whose summary names P0747. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P0747 means

Source: SAE J2012 / OBD-II

P0747 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.

From here

Common questions

Source: NHTSA files and the OBD-II standard

Is P0747 a known problem on GMC vehicles?

It is a documented one: NHTSA's files hold 139 manufacturer filings and 21 owner reports naming P0747 on 26 GMC model years (2018–2024). 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 P0747 appear on most?

2022 Yukon (14 documents), 2021 Yukon (13 documents), 2023 Sierra (9 documents).

Does P0747 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.