rbarrios

are you using a good quality gauge? or the ones thats been run over and banged up from the gas station?

2002impalaLS

HI.

I have an O2 Imp LS also and have noticed my head/dash lights will flicker when:

More coasting/no acceleration ~ 30+ mph, RPMs @ 1000~1200. it will do it constatantly too until i change either speed/rpms.

i usually have the radio on too, but i noticed it w/o the radio on. with the winter months here and driving i the dark more, its annoying and im just waiting to get pulled over for it.

i looked at the TSB and it appears that whatever is causing it is alot of other GM products since the problem appears in other makes/models.

any comments/solutions?

sorry to highjack....

SpankWizzle

I know everybody has said it, so I'll cut right to the chase. Fell in love with my '07 LTZ, thought I was nuts to think that this brand new car could be acting like this, and felt like a goon taking it back for little things like tire pressure system ****. But, alas I do have the flickering headlights, an e-brake that's worthless, and tires that don't know what side of the cars they're on. I'm glad I found this thread and expect to hear from me in the future. On the lighter side of things I've found nothing wrong with the way it drives/handles (except for the lack of a turbo) but I'm sure those are coming in the future.

P.S. anybody fool around with tuning the computer on these things?

rbarrios

the flickering headlight is most likely due to the AFM.
when it goes into 3 cyl mode.
Since you have the LTZ you have the 3.9 L.
There is a fix for that. early build 07's with the 3.9have that issue.
I have an 07 built in February of 07 and it does not have an issue.
YOu probably also had the tire pressure problem and remote with little distance- that is also fixable with a change in the box for the Remote keyless entry.
as for the e-brake.
theyre not longer called emergency brakes for a reason.
theyre now known as Parking brakes.
some lawsuit years ago about an e-brake that didnt stop a car or something- so now its called parking brake.

tommylama

Just bought an '07 LTZ last week and noticed the instrument lights flickering this evening. I also noticed that the radio is a bit staticky. I'm also getting concerned about the tire pressure monitor now that I'm reading this thread.

I found alist of TSBs at http://www.carcomplaints.com/Chevrolet/Impala/2007/tsbs.shtml. I'm bringing my LTZ back to the dealer this week. On a side note, the dealer told me that the car is certified but I still don't have any paperwork, etc.

Should I have them check everything out and give me a clean bill of health to cover my a** or just have the flicker and tire pressure monitor looked at?

rbarrios

sounds to me like you just need the flicker and tire pressure monitor issues dealt with.
reference the above mentioned TSB's

tommylama

Just an FYI... the TSB calls for the ignition coil and ground straps to be replaced. Thought that was a little strange.

DOCOLDS

We have a 2006 Impala LT with the 3500 and it does the same thing with flickering headlights and interior lights. It is very annoying for a new car to do this. Any fixes yet?

abiez

I have a 2001 Impala and when it get warm inside (usually after about 15 minutes of driving), then hell breaks loose. The gages die and the headlights and radio go too after flickering for some seconds.


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GaryS

I also have a 2007 impala with the 3.9, and I have had the same exact problem. I took it to my local Chevy dealer today and told them about the problem. Within 15 seconds, they pulled up the bulletin that was issued to dealers. The fix is to put in a new coil and ground strap. They did this under warranty, and it FIXED the problem. I can now finally drive at night without that annoying flickering.