chevrolet avalanche 1500 Seat Heater Wiring Schematics
Seat Heat Not Working Disconnect the heated seat module and check resistance through the heating elements pins A and F for the cushion and then C and D for the back. Each element should have resistance of 5 ohms or less. If a open circuit, replace the heating element. If resistance is OK, then check the resistance of the thermistor again on Grey connector pins B and E. Should be 500 and 10K ohms. Also check the fuse first there should be a 50 AMP under the hood. Need to check the SEO2 this is underhood 30 amp and IGN 3 10 amp fuse this is inside the cab. you should check the pads on passenger seat The wiring diagram for seat heater is as follows: