1999 Oldsmobile Alero Logo
Posted on Mar 10, 2010
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Service engin soon , Anti lock brake, & Trac control lights came on while driving 55 mph

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Jonah Oneal

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  • Oldsmobile Master 14,092 Answers
  • Posted on Mar 17, 2010
Jonah Oneal
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Joined: Mar 17, 2009
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CHECK ALTERNATOR OUTPUT.MAKE YOUR VOLTAGE OUT PUT IS 13.5 TO 14.5 VOLTS.IF NOT ALTERNATOR BAD IF ALTERNATOR GOOD THE DEALERSHIP HAS TO HOOK CAR TO DIAGNOSTIC TO CHECK THE ENGINE PCM CONTROLS AND ABS BRAKES AND TRAC.SYSTEM.REASON I SAID ALTERNATOR BECAUSE I SEEN ALTERNATOR GO BAD UNTIL IT OUTPUT WAS LOW CAUSING CHECK ENGINE LIGHT AND ABS LIGHT TO COME ON.

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