B0085 on GMC
GM left front side impact sensor circuit fault
Severity: Inspect soon
The airbag light means the system found a fault, and owner's manuals say to have it checked promptly because the airbags may not work as designed; this code concerns a side crash sensor.
This page covers only what differs on GMC. For what B0085 means, the ranked causes and the test order, see the B0085 guide.
What's different on GMC
GMCYour car
2013 · Yukon XL
Supported by vehicle dataTech tip: B0085 00 left front impact sensor circuit high or low, caused by a corroded kick panel connector (X500).
2020 · Terrain
Possible — needs testingOwner reports an intermittent airbag light with B0085 read by OnStar diagnostics.
2014 · Acadia
Possible — needs testingIndependent shop found B0085 together with B0023.
2007–2008 · Yukon
Possible — needs testingGM bulletin 4132 covers an SIR light with B0085 through B0088; PIT-4662 ties B0085 to seat position sensor wiring on 2003-2006 models. The meaning on these older years is not verified.
4132 (gmc)Status unverified
SIR light on, DTCs B0085-B0088
2007–2008sierra-1500, sierra-2500-hd, sierra-3500-hd, yukon, yukon-xl · issued · NHTSA 10023755
Covers an SIR light with DTCs B0085, B0086, B0087 and B0088 on 2007-2008 GM full-size trucks and SUVs. The NHTSA summary does not give the cause, the repair or what the codes mean.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
PIT-4662 (gmc)Status unverified
SIR MIL with DTC B0084 and/or B0085
2003–2007yukon, yukon-xl · issued · NHTSA 10026744
Covers an SIR indicator with DTC B0084 and/or B0085 on 2003-2007 GM trucks and SUVs, attributed to broken seat position sensor wiring under the front seats. This is a different description than the side impact sensor meaning seen on 2010 and later vehicles.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Yukon Air Bag Light On (2013 GMC Yukon XL tech tip)
- NHTSA complaint ODI 11384441 (2020 GMC Terrain)
- NHTSA complaint ODI 11556823 (2014 GMC Acadia)
- GM bulletin 4132: SIR light on, DTCs B0085, B0086, B0087 and B0088
- GM bulletin PIT-4662: SIR MIL with DTC B0084 and/or B0085 (seat position sensor wiring)
- 2023 Accord Owner's Manual: Airbag System Indicators
- Camry Owner's Manual (OM06291U)
- Nissan Supplemental Restraint Systems: damage analysis and repair using Diagnostic Trouble Codes (TechNews, Summer 2016)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error