Silverado 1500 2WD V8-6.0L (2010)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information
Circuit/System Verification
1. Ignition ON, observe the appropriate scan tool Heated Seat Module parameter listed below while pressing and releasing the heated seat back and
cushion switch. The readings should change between Off and Back & Cushion.
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Driver Seat HVC Mode
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Passenger Seat HVC Mode
‹› If not the specified value, refer to Heated Seat Switch Malfunction.
2. Ignition ON, observe the appropriate scan tool Heated Seat Module parameter listed below while pressing and releasing the heated seat back only
switch. The readings should change between Off and Back Only.
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Driver Seat HVC Mode
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Passenger Seat HVC Mode
‹› If not the specified value, refer to Heated Seat Switch Malfunction.
3. If all heated seat switch functions operate OK, but, one or more of the heated seat switch indicators is inoperative or always ON, refer to Heated
Seat Switch Indicator Malfunction.
4. If all scan tool parameters test normal and there are no DTCs set, replace the HSM.
Circuit/System Testing
Heated Seat Switch Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate heated seat switch.
2. Test for less than 10 Ohms between the ground circuit terminal 7 and ground.
‹› If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the appropriate scan tool Heated Seat Module parameter listed below is Off.
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Driver Seat HVC Mode
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Passenger Seat HVC Mode
‹› If not the specified value, test the signal circuits listed below for a short to ground. If the circuits test normal, replace the HSM.
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Seat cushion and back signal terminal 4
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Seat back only signal terminal 5
4. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground. Verify the appropriate scan tool Heated Seat Module parameter
listed below is Back & Cushion.
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Driver Seat HVC Mode
*
Passenger Seat HVC Mode
‹› If not the specified value, test the signal circuit for a short to voltage an open/high resistance. If the circuit tests normal, replace the HSM.
5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and ground. Verify the appropriate scan tool Heated Seat Module parameter
listed below is Back Only.
*
Driver Seat HVC Mode
*
Passenger Seat HVC Mode
‹› If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the HSM.
6. If all circuits test normal, test or replace the heated seat switch.
Heated Seat Switch Indicator Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate heated seat switch.
2. Ignition ON, verify that a test lamp illuminates between the control circuit terminal 2 and ground. If the test lamp does not illuminate, refer to
