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Diagnostic trouble code · Chevrolet

P3055 on Chevrolet vehicles

P3055 is named on 18 Chevrolet model years (2017–2021): 43 manufacturer filings and 2 owner reports in NHTSA’s files, across Silverado, Blazer, Equinox, Traverse, Cruze and 1 more.

Powertrain 18 model years 43 manufacturer filings 2 owner reports

Which Chevrolet model years name P3055

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2020 Chevrolet SilveradoElectrical System5—
2021 Chevrolet SilveradoPower Train4—
2021 Chevrolet BlazerElectrical System3—
2020 Chevrolet BlazerElectrical System3—
2020 Chevrolet EquinoxExterior Lighting21
2020 Chevrolet TraverseEngine21
2021 Chevrolet EquinoxElectrical System2—
2021 Chevrolet MalibuEngine2—
2021 Chevrolet TraverseEngine2—
2020 Chevrolet MalibuEngine2—
2019 Chevrolet BlazerEngine2—
2019 Chevrolet CruzeElectrical System2—
2019 Chevrolet MalibuElectrical System2—
2019 Chevrolet TraverseEngine2—
2018 Chevrolet CruzeElectrical System2—
2018 Chevrolet MalibuEngine2—
2018 Chevrolet TraverseEngine2—
2017 Chevrolet CruzeElectrical 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.

Engine 22 Electrical System 17 Power Train 2 Exterior Lighting 2
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What Chevrolet 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.

on morning start-up there's an absurd amount of exhaust coming into the cabin area, the codes [P3055 and P3056] are registered from the computer of vehicle
2020 Chevrolet Traverse Jan 13, 2025 NHTSA owner report

Chevrolet filings that name P3055

Source: NHTSA manufacturer communications

Bulletins and campaigns Chevrolet filed with NHTSA whose summary names P3055. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What P3055 means

Source: SAE J2012 / OBD-II

P3055 is a manufacturer-specific code: the second character is a 3, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.

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 P3055 a known problem on Chevrolet vehicles?

It is a documented one: NHTSA's files hold 43 manufacturer filings and 2 owner reports naming P3055 on 18 Chevrolet model years (2017–2021). 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 P3055 appear on most?

2020 Silverado (5 documents), 2021 Silverado (4 documents), 2021 Blazer (3 documents).

Does P3055 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.