C0036

DTC C0036 Rear Speed Signal Missing (4.3L Engines Only):

Vehicle Speed Sensors Schematic:

CIRCUIT DESCRIPTION
The rear wheel speed signal originates from the Vehicle Speed Sensor (VSS) which is connected to the Vehicle Control Module (VCM). The Electronic Brake Control Module (EBCM) receives the rear wheel speed signal from the VCM.

CONDITIONS FOR SETTING DTC
EBCM losing the rear wheel speed signal for at least 5 seconds at speeds over 13 km/h (8 mph) with the brake pedal released. If a Diagnostic Trouble Codes (DTC) C0035 is also stored, use that diagnostic chart.

ACTION TAKEN WHEN THE DTC SETS
- ANTILOCK indicator lamp is illuminated
- ABS is disabled

DIAGNOSTIC AIDS
This DTC can be set by a faulty VSS, or a fault in circuit 821, 822, or 1827

DTC CHART TEST DESCRIPTION
The numbers below refer to the numbers on the diagnostic chart.
1. Measure the voltage at terminal E of the
3. Check for an open in circuit 1827.
5. Check for a short to ground in circuit 1827.