If your ABS malfunction this could be a cause. Since it was intermittent until now. That would be my first place to start. If the brain can't tell how fast the wheels are turning then it won't be able to tell if the wheels are getting traction. You can try cleaning each ABS connector, these are the only wires running to your wheels. (2 wire connector plug). 2nd problem may be that (sorry to say) one of your Wheel Bearings are going bad, since the ABS is built into the wheel bearing.
SOURCE: 1999 oldsmobile alero the traction and cruise not working
use a scanner to check the abs system . most of the time the abs brakes and traction control system work together. your cruise control . unit has a servo motor .in front right fender well. check the fuse and relay also the cruise control brake release switch. and the brake light switch.if all is good you have a cruise control module problems. dealer ship job.
SOURCE: 2002 Alero shifting hard
I have a 1999 Oldsmobile Alero and my car was running rough and stalling. Also when the car was shifting, it was making a "thud" sound. My service engine light was on, so I took it to Autozone to run their diagnostic tool. It came back with code P0108 and they advised me to check my vacuum hoses as a possible solution. I looked and found that my air hose running from my throttle body to my map sensor was disconnected. I reconnected the hose and the engine ran normally and didn't make any "thud" sound when shifting. My car is back to normal. So check your hoses. If its still running rough, you may need to replace your map sensor.
SOURCE: 2002 Alero wont go over 40 mph
I happen to own a 2002 alero, and my wife called me and said the same problem had happened. Change your fuel filter.
SOURCE: sometime my 2002 alero jumps into gear when I
Is the check eng light on go to parts store to find out code like poss unplugged air temp at air snorkal unplugged could cause this
SOURCE: Anti Lock, No Traction and Service Engine Light on
Beleave it, or not. you need to look into the fuel injection system. I had to have #1 fuel injector replaced for the same reason.
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