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Diagnostic trouble code · Chevrolet

P0746 on Chevrolet vehicles

P0746 is named on 15 Chevrolet model years (2018–2025): 37 manufacturer filings and 2 owner reports in NHTSA’s files, across Traverse, Trailblazer, Blazer, Equinox.

Powertrain 15 model years 37 manufacturer filings 2 owner reports

Which Chevrolet model years name P0746

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2024 Chevrolet TraversePower Train51
2024 Chevrolet TrailblazerPower Train5—
2024 Chevrolet BlazerPower Train4—
2025 Chevrolet TrailblazerPower Train3—
2023 Chevrolet TraversePower Train3—
2021 Chevrolet BlazerPower Train2—
2021 Chevrolet TraversePower Train2—
2020 Chevrolet BlazerPower Train2—
2020 Chevrolet EquinoxPower Train2—
2020 Chevrolet TraversePower Train2—
2019 Chevrolet BlazerPower Train2—
2019 Chevrolet TraversePower Train2—
2018 Chevrolet TraversePower Train2—
2025 Chevrolet TraversePower Train1—
2022 Chevrolet TraversePower Train—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.

Power Train 39
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Chevrolet filings that name P0746

Source: NHTSA manufacturer communications

Bulletins and campaigns Chevrolet filed with NHTSA whose summary names P0746. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P0746 means

Source: SAE J2012 / OBD-II

P0746 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 Chevrolet 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 P0746 a known problem on Chevrolet vehicles?

It is a documented one: NHTSA's files hold 37 manufacturer filings and 2 owner reports naming P0746 on 15 Chevrolet model years (2018–2025). 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 Chevrolet models does P0746 appear on most?

2024 Traverse (6 documents), 2024 Trailblazer (5 documents), 2024 Blazer (4 documents).

Does P0746 on a Chevrolet 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.