I got a 2005 SS/SC with 5,000 miles on it so far...here's my problem...when I start the car for the 1st time everyday the tachometer drops way down almost to zero and the idle drops way down too...then the tac and idle go way up past 1,000 rpms...then drops to the normal ideling position...and the engine catches again and is fine...all this happens when Im simply sitting in nutral in my drive way not even trying to pull out...and mostly only happens the 1st start of the day...any time after that I start it...its fine as its been warmed up...it did it a few times over the summer but now with the cold here its doing it everday...I cant ignore it anymore...I also use Amoco ultimate 93 octane everytime I fill up...so it's not cheap or the wrong octane gas...what do you guys think it is...just the ideling or timing needs raised up?

 

This happens to a lot of people on here. I'd let your dealers service dept. know.

 

They have a reflash to fix it, i had the same problem but after the reflash it went away.

 

So when I make an appointment with my GM garage and say I need my car reflashed they'll know what Im talking about...what is that exactly reflashed?

 

most likely they will just give you the latest revision of the codes

 

They update the computer codes that tell your car how to run. Quick and easy, they just plug into the OBDII port under the dash and upload the new codes.

 

Moved to appropriate forum.

 

Take your car to the dealership and tell them you need your ECU to be updated with the TEC-2, itll add some codes to your car (including a rough engine idle code) and after that it works mint

 

I just realized how hard owning a new car would be if you had no knowledge at all about cars. Like holy crap so many ppl know nothing how does the car survive? I mean my car would be toast if i didnt bring it in like 15 times already.

 

I'm having sort of the same issue. After I drive for a while and I get to a light or something, my cars idle is weird. It goes from 400 RPM to 1000 RPM back down to 400 then back up and does it a few times then stops. Should I take it to the dealership and ask about the re-flash?

 

yes^^^

 

Alrighty, thanks.

 

has any one had this problem with the 2.2 mine has done something like that where it will drop really low and almost stall than pick up over idle and equal out not up and down that many times

 

kinda bringin this up from the dead but i just got my SS tonite and im goin in for the idleing issue tomorrow mornin, how long does this relash take??

 

opps, "reflash" lol

 

iabout 45 mins, its not bad at all

 

sweet, i dont have an appoitment though, is that cool,??? like i said, i just got the car a few hours ago.