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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 5, 2024
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2015 GMC Terrain SLE 2.4L Negative Fuel Trims VIN: 2GKALMEK9F
Vehicle runs fine however the fuel trims are crazy negative. Swapped MAF with known good. Swapped Cam Solenoids and throttle body with known good. (I own my own 2015 Terrain) Trouble codes: P0138 (HO2S Delayed Response Rich to Lean Sensor 2. Test Failed), P013E, P0140 (HO2S Circuit Insufficient Activity Sensor 2 Sympton 00 Test Failed Warning Indicator Requested)

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