GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide

Trouble Codes

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The following is a list of Diagnostic Trouble Codes (DLCs) for the RWAL system.



Code 2: Open isolation solenoid or EBCM malfunction
 
Code 3: Open dump solenoid or EBCM malfunction
 
Code 4: Grounded anti-lock pressure valve reset switch
 
Code 5: Excessive dump valve actuations during an anti-lock stop
 
Code 6: Erratic speed signal
 
Code 7: Shorted isolation solenoid or EBCM malfunction
 
Code 8: Shorted dump solenoid or EBCM malfunction
 
Code 9: Open or grounded speed signal circuit
 
Code 10: Brake switch circuit
 
Codes 1, 11 or 13: Invalid diagnostic trouble codes
 
Codes 13, 14 or 15: Electric brake control module malfunction
 

 
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