get a code scanner, or borrow one from a parts store, plug it in and clear codes
In the 2000 Alero, it is fuse 34 in the engine fuse box, which is located near the battery. You can check the same fuse for the 1999 Alero and see if that is it.
check engine light
Have the problem repaired and they will reset the light. If you DIY then disconnect the negative battery cable for 5 minutes. If that does not reset the light you will have to have it reset with an OBD2 scan tool.
You can find sliders for a window regulator on an Oldsmobile Alero at most auto parts stores. Another option, is to check with local junk yards.
take the battery cable off for 15 minutes
The transmission dipstick for the 2002 Oldsmobile Alero is located near the back of the engine bay, towards the driver's side. It is usually found near the transmission, typically marked with a yellow or orange handle. To check the transmission fluid, you need to remove the dipstick, wipe it clean, reinsert it, and then check the fluid level on the stick.
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.
Check fuse nr 34 under hood!
To check the transmission fluid on a 2001 Oldsmobile Alero, start the engine and let it warm up to operating temperature. With the transmission in "Park," locate the transmission dipstick, usually found near the back of the engine. Remove the dipstick, wipe it clean, reinsert it, and then pull it out again to check the fluid level. The fluid should be between the "Full" and "Add" marks; if it's low, add the appropriate type of transmission fluid as specified in the owner's manual.
You can disconnect the negative battery cable, wait a couple minutes then reconnect the cable. This will clear the codes and reset the check engine light but, if the reason the light came on isn't fixed the light will come back on soon.
To reset the check engine light on a 1999 Oldsmobile Silhouette, you can disconnect the negative battery terminal for about 15 minutes. This will clear the vehicle’s computer memory, including the check engine light. Alternatively, you can use an OBD-II scanner to erase the trouble codes that triggered the light. However, it's essential to address any underlying issues before resetting the light to avoid recurring problems.
The 2004 Oldsmobile Alero typically requires about 5 quarts of oil when equipped with a 2.2L engine and approximately 5.5 quarts for the 3.4L V6 engine. It's always a good idea to check the owner's manual for the specific engine type to ensure accurate oil capacity and type.