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Diagnostic trouble code · GMC

P062B on GMC vehicles

P062B is named on 34 GMC model years (2021–2026): 220 manufacturer filings and 1 owner report in NHTSA’s files, across Yukon, Sierra 2500HD, Sierra 3500HD, Sierra, Savana and 2 more.

Powertrain 34 model years 220 manufacturer filings 1 owner report

Which GMC model years name P062B

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2023 GMC YukonNot specified25—
2024 GMC YukonNot specified19—
2025 GMC YukonNot specified14—
2024 GMC Sierra 2500HDNot specified121
2024 GMC Sierra 3500HDNot specified12—
2024 GMC SierraNot specified11—
2023 GMC SierraNot specified10—
2023 GMC Sierra 2500HDNot specified10—
2023 GMC Sierra 3500HDNot specified10—
2022 GMC YukonNot specified9—
2021 GMC YukonNot specified9—
2025 GMC SierraNot specified7—
2025 GMC Sierra 2500HDNot specified7—
2025 GMC Sierra 3500HDNot specified7—
2025 GMC SavanaNot specified6—
2024 GMC SavanaNot specified6—
2023 GMC SavanaNot specified6—
2022 GMC Sierra 2500HDNot specified5—
2022 GMC Sierra 3500HDNot specified5—
2021 GMC Sierra 2500HDNot specified5—
2021 GMC Sierra 3500HDNot specified5—
2026 GMC YukonNot specified4—
2026 GMC SavanaNot specified2—
2026 GMC SierraNot specified2—
2026 GMC Sierra 2500HDNot specified2—
2026 GMC Sierra 3500HDNot specified2—
2026 GMC CanyonNot specified1—
2025 GMC AcadiaEngine1—
2025 GMC CanyonNot specified1—
2024 GMC AcadiaEngine1—
2024 GMC CanyonNot specified1—
2023 GMC CanyonNot specified1—
2022 GMC SavanaNot specified1—
2021 GMC SavanaNot specified1—

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.

Not specified 200 Electrical System 12 Engine 8
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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 contact stated that upon scanning the vehicle, the contact retrieved DTC: P0606 and P062B
2024 GMC Sierra 2500HD at 70,000 miles Oct 29, 2025 NHTSA owner report

GMC filings that name P062B

Source: NHTSA manufacturer communications

Bulletins and campaigns GMC filed with NHTSA whose summary names P062B. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P062B means

Source: SAE J2012 / OBD-II

P062B 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 P062B a known problem on GMC vehicles?

It is a documented one: NHTSA's files hold 220 manufacturer filings and 1 owner report naming P062B on 34 GMC model years (2021–2026). 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 P062B appear on most?

2023 Yukon (25 documents), 2024 Yukon (19 documents), 2025 Yukon (14 documents).

Does P062B 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.