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It appears to be a known issue on Saturn. Some say the alarm, some say the button. According to this, disconnecting the battery for a few hours will fix it.
nipples on intake manifolds are used for vacuum access ports so check for a vacuum hose broken off, missing vacuum gauge hose ,PCV valve hose ,anything that requires vacuum to operate-gear box operation.
First thing to check on an injected engine with high idle is for intake vacuum leaks. Unmetered air entering the intake can cause high idle, as the o2 sensors add fuel to correct the mixture. The result of this is often a high idle. Spray carb cleaner around the intale and on vacuum hoses and connections. Don't forget the power brake booster, which is powered by engine vacuum. You don't mention engine size, however I've seen the rubber boots on the intake leak several times on the 3.0. Try not to do this carb cleaner test on an incredibly hot engine, and stay away from the exhaust. BE SAFE. Another method is to use propane to sniff out vacuum leaks. Either way, engine speed will either pick way up, or it will stuble badly when you find the leak, depending on location. Good luck!
the intake manifold gasket at cylinder #1 shifted over and is causing a vacuum leak,,,,,if its a SL1,SC1,SW1,,the single cam engines only had this issue not the twin cam,you need a new intake manifold gasket,gasket is like $20-$40,,but labor is about $450 unless you can do it,but its very involved
Check for vacuum leaks, especially at the intake manifold where it bolts up to the engine at cylinder #1 (passenger side of engine). Also check your TPS and your IAC.
Spraying a little carb cleaner at a vacuum leak will change the idle of the engine. Use caution as the stuff is flammable.
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