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Question

My dash brake light is flashing a code i think? 4 flashes, stays on for a second, then starts all over again. Can anyone tell me what this means?

Submitted: 632 days and 8 hours ago.
Category: Chevy
Value: $9
Status: CLOSED
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Optional Information

Optional Information:
1994 GMC Sonoma 2.2L

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Accepted Answer

Hello, first I need to ask if this is a rear wheel only ABS system? If so, a code 4 normally has to do with the anti lock valve reset switch and it could need either a new Isolation Dump Valve or a new ECU, but we will need to run some tests to determine which. So, let me know which system it has and if you have a good ohm meter for testing. Do you have access to a Tech 1, type scan tool? Thanks

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Expert: Bob
Pos. Feedback: 99.8 %
Accepts: 
Answered: 3/1/2008

Auto Tech

Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)

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