2000 alero struggles to start sometimes

sounds like a fuel filter would b a good place to start

Has your Alero been parked for an extended time, or is the weather really dirty where you are? May need to clean all 4 door acentuators...(spray with PB Blaster) and wipe off excess...may be sticking...any interior lights on? Best test would be to dis-connect the battery posts for 15 minutes and then re-connect. (this reset the memory) Any check engine lights on? Hope this helps.

I would say that would be right. Check the relay for the plugs and check the plugs individually for burnt filaments.

ck the cv joints

Sounds like crank position sensor.

did u check fuel filter ? is it skipping ? have u checked your charging system?

sometimes when warming up motor the oil doesnt reach up there right away so eventually oil reaches causing clatter to stop a lot of vehicles do it even new ones just make sure you have the proper weight of oil in the motor if car has high mileage..this will help with noise

There are a number of reasons why they will sometimes not work. Flasher, contacts on the multifunction switch, even the light bulbs not making a good connection/contacts. You can first try out the flasher if this doesnt work try wiggling the switch around a lil and see if you can make it work or not work in a specific position, other than off position, this will let you know that the switch is not making a good connection. This part can be pricey so dont jump to any conclusions right away consult a friend to verify your ideas. Have that friend stand at the back of the vehicle while you hold the brake and wiggle the switch if they see that the light will go out and not flash then you are looking at that switch...keep in mind some of those vehicles use the brake light as a blinker as well so it might turn off to blink. Just follow your instinct and rule out other possible issues to narrow it down to a specific item. This is every mechanics philosophy. P.s. by all means the flasher is a cheaper part you can try it out first. If that does not fix your problem then u know what to do next.

Also replace the camshaft sensor and fuel filter.

I had this problem with my 1999 alero i took it apart and investigated it myself because i have been a mechanic for 25 years now but i had to replace the starter relay the whole ignition system and believe it or not new valves. After I replaced all of those my alero drove better then eer and the lights never went back on or any of the other lights....