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2008 Chevy Avalanche B0083 Code: Front Impact Sensor Failure Diagnosis and Repair Guide

Model: 2008 Chevy Avalanche Fault Code: B0083 Posted: 2016-05-08 19:23

I'm experiencing a B0083 diagnostic code on my 2008 Chevrolet Avalanche, which the code reader identifies as 'Second Row Seat Belt Load Limiter Deployment Control (Subfault)'. However, I notice several related subcodes such as B0083-1, -2, etc., all pointing to front impact sensor failures. Notably, I do not see any suffixes (like -0F or -39) on my B0083 code. Three different scan tool providers confirm the issue is with the front impact sensor when I mention the B0083 code. Should I trust this diagnosis? And what exactly should I replace — the sensor, or another component?

Related fault codes
B0083
Comments (3)
Anonymous 2016-05-09 08:02

Based on my research, the B0083 code typically relates to the Left Front Impact Sensor. Possible subcodes include: B0083 00 (Left Front Impact Sensor), B0083 0F (Erratic behavior), B0083 39 (Internal electronic failure), B0083 3A (Incorrect component installed), and B0083 71 (Invalid serial data received). If your scanner shows only B0083 without a suffix, it may indicate a missing subcode or potential scanner limitation. I recommend contacting the scan tool manufacturer to clarify why no suffix is displayed. Please also share any prior vehicle history or related issues for better context.

Anonymous 2016-05-11 09:24

Thanks for the detailed input. My vehicle has no prior known issues. After swapping both front impact sensors, I now receive a B0084 code — which specifically points to the left front sensor failure. This confirms that the original left sensor was defective. I've since ordered a replacement OEM part (Part Number 25896408) for installation.

Anonymous 2016-05-14 11:49

I replaced the faulty left front impact sensor with a Dorman 590-224 unit, and the issue was fully resolved. After replacement, the airbag warning light turns off when I start the vehicle. The repair took approximately 10 minutes and required no additional diagnostics or tools beyond basic hand tools.