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Diagnostic trouble code · Chevrolet

B1370 on Chevrolet vehicles

B1370 is named on 17 Chevrolet model years (2017–2020): 65 manufacturer filings and 0 owner reports in NHTSA’s files, across Suburban, Tahoe, Silverado, Silverado 2500HD, Silverado 3500HD.

Body 17 model years 65 manufacturer filings

Which Chevrolet model years name B1370

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2017 Chevrolet SuburbanEquipment8—
2017 Chevrolet TahoeEquipment8—
2018 Chevrolet SuburbanEquipment Adaptive/Mobility6—
2018 Chevrolet TahoeEquipment6—
2019 Chevrolet SilveradoElectrical System5—
2017 Chevrolet SilveradoElectrical System5—
2019 Chevrolet Silverado 2500HDElectrical System4—
2019 Chevrolet SuburbanEquipment4—
2019 Chevrolet TahoeElectrical System4—
2018 Chevrolet SilveradoEquipment4—
2018 Chevrolet Silverado 2500HDEngine3—
2020 Chevrolet SuburbanElectrical System2—
2020 Chevrolet TahoeElectrical System2—
2019 Chevrolet Silverado 3500HDEquipment1—
2018 Chevrolet Silverado 3500HDEquipment1—
2017 Chevrolet Silverado 2500HDEquipment1—
2017 Chevrolet Silverado 3500HDEquipment1—

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.

Equipment 24 Electrical System 24 Equipment Adaptive/Mobility 5 Suspension 4
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Chevrolet filings that name B1370

Source: NHTSA manufacturer communications

Bulletins and campaigns Chevrolet filed with NHTSA whose summary names B1370. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B1370 means

Source: SAE J2012 / OBD-II

B1370 is a manufacturer-specific code: the second character is a 1, 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 B1370 a known problem on Chevrolet vehicles?

It is a documented one: NHTSA's files hold 65 manufacturer filings and 0 owner reports naming B1370 on 17 Chevrolet 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 Chevrolet models does B1370 appear on most?

2017 Suburban (8 documents), 2017 Tahoe (8 documents), 2018 Suburban (6 documents).

Does B1370 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.