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gm in the 1990's did a lot of ABS changes and software in the PCM/ECM software. you have to get your schematics to modify the wiring .and remove the ABS module ...front wheel sensors GM did a mess in the 1990's lots of rusted mess..
then my 2000 1500 LT the wheel bearings front hubs rusted out then the brake lines rusted out and the speed sensors rusted and the hubs lifted the speed sensors and the 5MPH had no brakes and caused many accidents .. factory parts POS.. I used timken front wheel bearings ..ABS module corroded and the circuit board had poor soldering .. then water got into the ABS module and the steel screws damaged the aluminum body covers.............................
INSPECT THE COMPLETE BRAKING SYSTEM ..............
 
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