Last post on Dec 09, 2013 at 5:13 PM
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Chevrolet Impala, Lights, Electrical, Sedan
#380 of 447 2004 Chevy Impala speedometer
Oct 22, 2010 (5:05 pm)
I bought my 2004 Impala new. I have for the most part been very happy with it. The only real issue I am having is with the speedometer. It will sometimes say I am going 100 mph or more when only going maybe 30. And sometimes it will say I am going negative speed when going 55. It goes all over the place. I never know when it will go crazy on me. It makes it very difficult to know my actual speed. I am fortunate to have an information center that I can check my average speed. That is how I see how fast I am going. Is there any recourse with this issue? I look online at times to see if there have been any recalls we missed. Nothing so far about this problem. I have been told it will be several hundred dollars to fix. Any help or suggestions are appreciated. Thanks.
#381 of 447 2003 Impala Electrical
Nov 08, 2010 (10:02 am)
About 6 months ago with about 90,000 miles I started to have the following problem: when I start the car, sometimes (but not every time) the overhead info center would not come on, the HVAC would not work, and the cruise control light would come on but the system would not work. The problem always involved these 3 items, and only them. When this first started, everything would start working fine within about 5 minutes after driving. The problem has steadily gotten worse (happens more frequently, lasts longer, etc.). It is been a condition that I could somewhat ignore, but now that the frost is on the pumkin, winter driving without a heater and rear window defogger will be intolerable. I suspect a grounding problem or a computer module, but have not had it in for check up...probably will be expensive and may or may not cure the problem. Any ideas?
#382 of 447 Re: 2003 Impala Electrical [dmillerj]
Nov 08, 2010 (10:37 am)
BODY CONTROL MODULE needs to be replaced. GM has avoided a recall on the mid-sized cars and trucks made from 1999 through 2004, and made most people go through the electrical nightmare or replacing every component before telling them it is the BCM. The problems came from after-market components used to build the cars. You can buy a BCM and install it yourself, but then GM needs to program it. For that, they will charge you an installation fee. I bought a warranty plan with my 2001 Impala when I got it from a GM dealer in 2008. In order to utilize the investment, I DEMANDED the dealer cover the BCM. They did, and it worked. After all, they had no issue covering the ECM/ECU, better known as the Power-train Control Module. My warranty specifically addressed power-train, but made exceptions for the electrical. I explained that the BCM prevented by car from starting, and they we able to provide the coverage for minimal costs.
#383 of 447 Re: 2004 Chevy Impala speedometer [jrpnfw]
Nov 17, 2010 (2:47 pm)
I have a 2004 Impala and had the same speedometer problem. We had a wiring harness replaced. The Chev dealer said we'll get our money back if they have a recall on that part...so far no word of recall. It was mighty scary watching the speedometer go faster when I was slowing down or stopped!!! works now though. Now my problem is the switch for the AC/heat. If it doesn't work, I have to slam the passenger side door and it works!!! If anybody knows how to solve that problem, let me know!!!
#384 of 447 Re: Im going nuts [fathertyricius]
Dec 21, 2010 (4:47 am)
I have a 2008 Impala and I am very frustrated ,I have only had it 3 years,my radio goes on and off,has been doing that for months,if you take the key out of the ignition it keeps chiming ,you have to put the key back in and turn it on then off,my back defroster quit working,my onstar won't work because of the radio and my battery has been dead several times after coming out to my car from work,I took it to my dealer and of course the only warranty left is the powertrain ! I bought a new car because my used car was breaking down on me,I had no car payment though,now I am breaking down and paying 450 a month,I am so angry ,now I am going to have to pay a dealer big bucks for repairs,I thought Chey was dependable and stood behing their cars but I am starting to reconsider.
#385 of 447 Re: Im going nuts [wayniac67]
Dec 21, 2010 (9:06 am)
I apologize for your experience. When did you start experiencing these problems? Can you please e-mail your VIN and current mileage? I look forward to your response.
GM Customer Service
#386 of 447 An answer for BCM problems
Dec 30, 2010 (3:32 pm)
#387 of 447 An answer for BCM problems
Dec 30, 2010 (3:41 pm)
I do not know what happened to my message before. As a result I will repeat. Everyone should call 1-888-327-4236 DOT Auto Safety Line to create a RECALL of this problem as I did.
You may get results. GOOD LUCK
#388 of 447 Re: Im going nuts [gmcustsvc]
Feb 03, 2011 (7:45 am)
I am responding also, as I have a 2005 Chev Impala and the speedodometer, the overheat monitor both go crazy constantly. I have been watching for a recall for about 2 years. It is going to cost $500 to fix this problem. I find very frustrating as I have had this problem for about 2 years and have to constantly judge my speed and keep a check on my radiator as I cannot trust my factory installed equipment. I have never owned another brand vehicle other than a Chev and this is the first time I have been truly disappointed with my vehicle. I am now thinking about going for a Nissan in the future as I have spoken with numerous Nissan owners who seem to never have electrical issues.
Sometimes the security system causes the car not to start for no reason and you have to wait 10 minutes to start your car.
I am also aware that my local police dept impalas also have this issue. It is sad when a police officer is going on a call and his car will not start and he had to wait 10 minutes to "protect and serve" the citizens because the police dept chose a chev impala.
Thank you for your time.
#389 of 447 Re: Im going nuts [chevowner1]
Feb 04, 2011 (7:32 am)
The "no-start" problem is probably the "passlock sensor" The other problems with the guages may be related to a defective BCM (Body Control Module)
Chevys are Junk: My 02 Impala needed a BCM, Passlock Sensor, Intake manifold gasket, ISS steering shaft is noisy, high low beam combination switch was defective.
Chevy's are Lemons!