ABS light / Parking brake on

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jus10inbrla

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93 silverado; parking brake definitly not on. But the light is on the dash. Where do i need to start ? Havent been in any water anywhere or offroad. All road driving. Less than 5-10 miles a day. Thanks in advance
 

evilunclegrimace

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Check for RWAL codes.

Jump terminals A to H on the ALDL to pull codes.
 
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95C1500

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When mine popped on, my wheel speed sensor had rubbed a hole through the wire with the front wheel. I've also heard air in the brake system can cause that light
 

evilunclegrimace

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When mine popped on, my wheel speed sensor had rubbed a hole through the wire with the front wheel. I've also heard air in the brake system can cause that light

93 does not have 4Wheel ABS so no front hub sensors.
 

df2x4

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It doesnt have obd port. Is there another means of checking those codes ?

OBD1 trucks should still have a diagnostic port, has yours been removed or relocated for some reason?
 

df2x4

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jus10inbrla

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So if I’m reading that right ; the CEL will blink 13-66 times.. & however many times it blinks that’s the code?
 

95C1500

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93 does not have 4Wheel ABS so no front hub sensors.
Good point. Didn't think about that.
So if I’m reading that right ; the CEL will blink 13-66 times.. & however many times it blinks that’s the code?
It will flash each code 3 times. Code 12 essentially means the system is functioning.
The cel will flash once, pause, flash twice, pause, flash once, pause flash twice, pause, flash once, pause, flash twice, pause. It repeats the pattern for each code stored.
 
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