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Diagnostic trouble code · GMC

U0073 on GMC vehicles

U0073 is named on 8 GMC model years (2017–2020): 40 manufacturer filings and 0 owner reports in NHTSA’s files, across Sierra, Yukon, Sierra 2500HD.

Network 8 model years 40 manufacturer filings

Which GMC model years name U0073

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2017 GMC SierraElectrical System9—
2017 GMC YukonElectrical System9—
2018 GMC YukonEquipment6—
2020 GMC SierraEngine4—
2018 GMC SierraElectrical System4—
2019 GMC Sierra 2500HDElectrical System3—
2019 GMC YukonElectrical System3—
2020 GMC YukonElectrical System2—

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.

Electrical System 18 Equipment 12 Equipment Adaptive/Mobility 2 Engine 2
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GMC filings that name U0073

Source: NHTSA manufacturer communications

Bulletins and campaigns GMC filed with NHTSA whose summary names U0073. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What U0073 means

Source: SAE J2012 / OBD-II

U0073 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 U0073 a known problem on GMC vehicles?

It is a documented one: NHTSA's files hold 40 manufacturer filings and 0 owner reports naming U0073 on 8 GMC model years (2017–2020). 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 U0073 appear on most?

2017 Sierra (9 documents), 2017 Yukon (9 documents), 2018 Yukon (6 documents).

Does U0073 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.