Had issue when I changed alternator, and unhooked battery. Had to take to inspection center and have codes cleared. Tech says when battery is unhooked, codes will be saved until cleared with device. Maybe just bull, but it has been 2 weeks, and no engine light.
hubs
turn off engine, and start again
Have vehicle scanned to determine the problem and have codes cleared
check engine light
i to also have a 01 alero had the same propblem was told it was the speed sensor replaced it and no more lights i to also have a 01 alero had the same propblem was told it was the speed sensor replaced it and no more lights
A person can reset the service engine light in a 1998 Tahoe by disconnecting the battery cables for 1 minute. After the battery cables are reconnected, the light should turn itself off.
what does the engine light on the 1999 olds alero mean
The service engine light has to be reset with a scanner. Disconnecting the battery will not work. The light will come back on unless you make the necessary repairs.
unplug your car battery
The service engine or check engine light can be reset with a scan tool or by unhooking the battery. The light will return if the failure that caused the code is not repaired.
there are two things to do first you can reset the computer by disconnecting the battery for about 1/2 hour then if your light still comes on after that just go to an autozone and they will check the light out for you for free and let you know what needs to be fixed and what code you have.
To turn off a service engine light soon on a 1997 Malibu, you will need to unhook the battery for up to 2 minutes. After you hook the battery back up, the light should be off.