4th Mar 2011, 09:38

Ha HA Ha Ha!!! Talk about out of the frying pan and into the oven with a 2010 Impala! Good luck...

5th Jun 2011, 08:20

The RPMs jumping around and the rough idle is probably related to the MAF (Mass Air Flow) sensor. Easy to replace and costs around $150. Hope that helps.

9th Jul 2011, 14:38

Smart, I would stay away.

16th Aug 2011, 22:08

I have two 96 Cadillac Fleetwoods, both LT1's, and I removed the Dexcool as soon as I got them. One of them already had mileage on it, and after a year I lost the head gasket. It seems Dexcool is very acidic and eats at the gaskets. If you put Dexcool on an aluminum plate, it will eat on the surface of it. The other Cad with low mileage now has 225,000 miles on it with the green antifreeze with no problems. I do know if you go from Dexcool to green (ethylene glycol), you must use a conditioner to stop the residual Dexcool from causing problems.

31st Jan 2012, 19:19

I have a 2000 MC SS, and have had the same issues with the key. If you don't let the fuel pressure build up, it will idle rough until it builds up.

Also check your fuel filter; one that is clogged will reduce the pressure in the line. A cheap fix if you ask me. 8 bucks.

27th Feb 2012, 04:26

I had the same problem with my 2003 Monte Carlo SS. We replaced the hub assembly, and the traction light started coming back on, and now the check engine light. Now the car seems to also have a loss of power and a whining sound, which leads me to believe there may also be a problem with the power steering pump. I am wondering why the loss of power, and why is my traction system still not operating properly? It seems like I have been having nothing but problems with this car. It is a beautiful car; but seems like every time it is fixed, the problems come back, or something else goes wrong. Any suggestions?

6th Mar 2013, 13:24

I have the same problem with a 2000 MC. Can you tell me what it was, and how much it cost to fix?

20th Sep 2014, 16:02

I agree... maintenance does wonders... but some models simply have weaknesses!!

11th Nov 2015, 02:10

I have a 2001 Limited Edition 3.8 and I've had it for ten years. This year was the first time I've rebuilt the trans. But twice the heads... this car has not gave me any problems til now with the transmission. I change the oil every 120 days, needed or not. It runs great, got a lot of buyers, no way I'll get rid of it; they only made them 2000-2007.

16th Nov 2015, 09:32

It's your axles.