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Saturn L300 Questions

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it did this just one time after being turned off then restarted
Neither of my heated seats work. They both stopped working at the same time. What could cause both seats to fail at the same time?
Spark plugs labor to replace
How do you reset the oil change system?
Using a brand new multi meter. Crank sensor is good I did get a reading on it bought a new one and still no start so took it back but cant get a reading on cam sensor. But cant find any info on testing one off car. Thanks
Installed new fuel pump, new fuel filter, new spark plugs,new coil packs, new cts, crank sensor is good.fuses are good relays are good.I jumped the fuel pump relay and it pumps fuel but will not work when key is cycled on.throttle body clicks when key is on it is clean also.was running fine then had this issue. Got it running again and the gas pedal was touchy like if u accel too fast it would die or if you acceled slowly then let off gas too fast it died real smoothly. Now just cranks and throttle clicks and no fuel pressure. Fuel pump and coils are ac delco. Plugs are gapped correctly. Tried a scanner it couldnt communicate.
The heater blower motor has stopped working. The problem started out as intermittently not working to not working at all now. I removed the motor and put it back in, thinking that the motor fan was being jammed against the housing or maybe a loose connection. It worked for a couple of days then stopped again. Research and talking with a couple of auto wrecker guys and my parts store the general consensus is the blower resistor. So here I am.

I have a Hayes manual for the 2000 - 2004 L300 and the description given appears to be incorrect. I tells me to remove the instrument cluster and then remove the right heater vent.(Cluster is on the left so why would anything to the right be accessible?) Anyways,("when all else fails, read the instructions. right?") I removed the instrument cluster and found a solid dash plate with no obvious removal screws/bolts. Searching the internet I've found references to the blower motor resister being on the right side of the vehicle beside/under the glove box. I pulled back the side panel and all I could find was the heater core.

Any help will be appreciated.
must you do timing belt?
must you do timing belt?
been told could be throttle body needs cleaning and map sensor replaced
I'll turn the key and it fires right up but shuts off seconds after. It'll keep doing that as long as I turn the key off before trying again. If I try to start it right back up before turning the key off, I only turns over
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