Possible causes
– Faulty Rear Speed Sensor
– Rear Speed Sensor harness is open or shorted
– Rear Speed Sensor circuit poor electrical connection
– Faulty EBCM
– Rear Speed Sensor harness is open or shorted
– Rear Speed Sensor circuit poor electrical connection
– Faulty EBCM
Symptoms
– ABS Warning Light ON
C0236 CHEVROLET Description
As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.
CHEVROLET Technical Service Bulletins for C0236 code
1998 CHEVROLET ASTRO SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
1998 CHEVROLET EXPRESS SERVICE BRAKES, HYDRAULIC:ANTILOCK:ABS WARNING LIGHT
1999 CHEVROLET ASTRO SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
1999 CHEVROLET EXPRESS SERVICE BRAKES, HYDRAULIC:ANTILOCK:ABS WARNING LIGHT
2000 CHEVROLET ASTRO SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
2000 CHEVROLET EXPRESS SERVICE BRAKES, HYDRAULIC:ANTILOCK:ABS WARNING LIGHT
2001 CHEVROLET ASTRO SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
2001 CHEVROLET EXPRESS SERVICE BRAKES, HYDRAULIC:ANTILOCK:ABS WARNING LIGHT
2002 CHEVROLET ASTRO SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
2002 CHEVROLET EXPRESS SERVICE BRAKES, HYDRAULIC:ANTILOCK:ABS WARNING LIGHT