2003 Chevrolet Trailblazer Questions

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My TB acts like it wants to stall out when sitting in heavy traffic or at a stop light. I want to know if there's any way to bumo up the idle rpm so I won't have this nagging problem anymore. The dealership has told me there's nothing they can do because it's all computer controlled but I'm not convinced without someone hooking up a computer scanner and charge me $500 for the service. I'm frustrated and desperately need help here.
Dave Clemenson

I changed line but could not get cup seal out of rack so I drove it without lines hooked up until pump pulley sheared off. After I replacing pump with used part. it just makes all sorts of noise and started to smoke and still don't have any power steering

put in gear and when you push down on gas paddle I hear a faint roaring noise.

since the 3 days battery discharged
under 11.5 volt.

Is this a transmission problem or shift cable or linkage problem! Have had linkage problems but got fixed!

I haven't 03 Chevy Trailblazer EXT 4 wheel drive LS it feels like it has a governor is kicking in and out automatically dies will restart dies restarts and it's all done eventually it will just not stay running at all even for a second

03 trailblazer shifter moves but wont move

disconnected battery post

The car squeaks over bumps, especially noticed at low speeds, maybe can't tell when going faster due to road noise. Suspension seems tight and no squeaks when I push on the car and I have lubricated everything I can think of.

I have already checked the antenna connections and they seem to be tight.

Change oil light comes on every time I turn the car on, but goes off about 30 secs, even after getting oil changed.

Only works a little. Makes a crunching noise.

Also my car starts intermittently when I pull on the bright lights on the multi-purpose switch the car will start sometimes

I was driving down the road and my trailblazer just shut off. The gauges were all fine. If I put it in park it runs fine when I go to take off I get a block or two and it shuts back off. No warning light nothing it just shuts off. I don't know what would cause this. Please help.

Replaced fan clutch twice die to ticking sound and sounds like jet engine. All gauges are normal and shifts normally. Any ideas
Plz help