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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 12, 2021
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
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2008 Chevrolet Suburban 1500 LTZ 5.3L Excessive Emissions, MIL Lamp on VIN: 3GNFK16338
Hey IATN community, I have a head scratcher here, or maybe I'm just making a mountain out of a molehill. So, the vehicle came to my shop after multiple repairs elsewhere that did not fix issue. Issue was CEL, intermittent misfire, and intermittent low powe... Trouble codes: P0420 (Catalyst system low efficiency B1), P0430 (Catalyst system low efficiency B2), P0573 (Brake switch circuit 1 high voltage), P1133 (HO2S insufficient switching B1S1), P1153 (HO2S insufficient switching B2S1)

Fixes & Summaries for GM
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