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pretty bad
Typical Repair Cost:
Average Mileage:
122,650 miles
Total Complaints:
13 complaints

Most Common Solutions:

  1. not sure (13 reports)
2003 Chevrolet Monte Carlo electrical problems

electrical problem

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2003 Chevrolet Monte Carlo Owner Comments

problem #13

Jan 242019

Monte Carlo Jeff Gordon SS K3800 6 Cyc

  • Automatic transmission
  • 131,000 miles


Little things at first; turn the key and the starter would engage a few seconds to a 1/2 a minute later. Then about a week ago, went with my dog to the vet and the key wouldn't shut completely off. Enough to kill the motor but not enough to remove the key and dash lights remain on. So I took the fob with me to lock the doors. Drove home and everything returned to normal. Went to start the car and the ignition switch will not turn at all, the floor shifter is locked in park and my security light on the radio (to the left of the cassette player) is blinking. Any help would be appreciated.

- Michael C., Moncks Corner, US

problem #12

Aug 092018

Monte Carlo SS

  • Automatic transmission
  • 200,000 miles

My 03 Monte Carlo has been having problems starting intermittently. I have replaced the fobs, the battery. Often I would bypass the security system by disconnecting the battery, but that doesn't seem to help anymore. Any advice would be greatly appreciated.

- Valori H., Toledo, WA, US

problem #11

Aug 202018

Monte Carlo LS 3.4L V6

  • Automatic transmission
  • 163,264 miles

The security light... Where to start... Being late on the 3rd day of my new job because I had to wait for it to clear it took 15-20 mins. Today on October 7th 2018 this happened 3 times. Once a 1:40pmish, 4:30pmish, and again at 6pm. Yesterday my dad was needing to go to the hospital and I wasn't able to take him due to this security system. It keeps happening more frequently and for longer periods of time.

A GM dealer had told me there was a recall but the recall was cancelled and it's up to me to take it in and pay out of pocket to have repaired. The ignition was $568.00. To plug in computer to run diagnostic test would cost $100. If I got repairs done that would be included plus labor fees of $100 an hr. I can't understand how they can cancel recalls when the problem is still happening? It just doesn't make sense to me but I'm nearing the end with patience and about to sell this car. I was very pleased at first cuz it's a nice car but it's now just a nice POS. Hopefully something can be resolved with this situation as the car owner I feel it is a very big issue that needs to be addressed and look in to.

- Warren H., West Branch, US

problem #10

Jan 152016

Monte Carlo SS 3800 V6

  • Automatic transmission
  • 140,000 miles


At times security light comes on and the car will not start. Blinkers work when they want to work, Brake light is on, check engine light is on, sometimes display lights work sometimes they don't and just recently the gas gauge quit working.

- carieb02, Pine Bluff, AR, US

problem #9

May 032012

Monte Carlo

  • Automatic transmission
  • 148,500 miles

Have a 2003 Chevy Monte Carlo and had problems with security light coming on and then car would die and not start.

Replaced alternator as was told by one mechanic that this was the problem. Then it did it again one day after we got the car back from having the alternator replaced. Then replaced battery, was told that this was the problem. Still same day we replaced the battery had same issue. Called many mechanics and had car taken in to look at and was told the pass lock key needed to be replaced. This was just done last week on 5/1/12. Security light comes on once in a while still and have to pull over and turn car off and then turn it back on again to get the security light to come off. Now being told that the ignition switch may need to be replaced.

Called Chevy (GM) back when first issue had happened and they don't say much about this. Went to Consumer affairs and better business bureau in my state and wrote in a complaint about as I am finding out that many complaints have gone in on Chevy vehicles about same issues. This is a problem that Chevy needs to take care of and place a recall in, but more consumers with this issue need to come forward and complain to the consumer affairs & better business bureau as well on Chevy to make this happen. If you are one of those consumers that are having the same issues with the security light and car stalling or dieing and have been told to replace numerous parts that would solve the problem but doesn't please contact your consumer affairs & better business bureau and place a complaint so we can get Chevy (GM) to recall this issue.

And for those of us that have spent numerous dollars to fix the issue that still is not fixed, Chevy (GM) needs to reimburse us for the money we spent and the heartache this has caused us. Some of us are not rich and live paycheck to paycheck and can't afford to always be missing work or paying for repairs on something that has been an on-going issue for many years and they won't do a recall.

- kdolphinlady, Park Forest, IL, US

problem #8

Mar 222013

Monte Carlo LS 3.4L

  • Automatic transmission
  • 186,560 miles

So last month I started experiencing problems with my car and the problems were as follows: security light coming on, car not wanting to start, engine light coming on, seatbelt light won't go off and brake light coming on. When I try to use my turn signals sometimes they work but it makes this grunting noise and all of my dashboard lights come on. I replaced my battery, I replaced my starter and had my alternator checked out and my car still wont start. Finally, I started doing some research and found the problem. I called a locksmith and they said it sounds like my key needs to be reprogrammed, but a technician will come out and look at the car to make sure that's the problem. This has been the most frustrating and costly experience since I had my car. I have had my car for three yrs and this is the most I've had to do. Chevy needs to do a recall for this problem because this is not something the consumer is doing its a malfunction on their behalf with their product.

- dhosey3, Norcross, GA, US

problem #7

Nov 282011

Monte Carlo NA 3.4L

  • Automatic transmission
  • 145,377 miles


Being that this 03 Monte Carlo is one of the better cars I have owned this is a horrible problem. The low battery light comes on and shortly after many lights on the dash come on. After that happens it dies . I replaced the alternator and battery and the problem happened again the next day! Desperately need a solution. If anyone has any ideas please let me know.

- bbond3, St.Albans, WV, US

problem #6

Jul 102011

Monte Carlo LS V6

  • Automatic transmission
  • 83,200 miles

Now that I think about it I have been having this problem for a few years. But it only happened about 3 to 4 times out of the year, but after about 5 minutes it always starts. I thought the auto start alarm I had installed, was resetting itself. Now it is much more regular like every day or so with much longer outage time. I have been reading some of the comments and solutions about the passlock system , So I plan to have that tested. I'll give an updated when that is completed. I believe that a recall should be setup for this problem. what is the procedure for that to happen?

- Louise D., gary, IN, US

problem #5

Nov 012010

Monte Carlo SS 3.8L V6

  • Automatic transmission
  • 95,000 miles

Periodically, (could be 4X a wk or once a month), I try to start my MC & the security light comes on the message center along with every other light on the dash & the car will not start. After trial & error, I've figured out a quick way to get the car started. I now carry a small pair of pliers with me so when this occurs I disco the battery, count to 3, reconnect battery, the car starts up & all of the lights go out. Yes, it sucks when this happens, especially considering it ONLY happens @ the most inconvenient times, but I can fix it in less than 4 mins, provided I have my trusty pliers & a flashlight. F.Y.I.-- less than 10 mins ago, my friend said your dome light is on, I NEVER leave the dome light on. This is my clue that the car wont start because of above-mentioned problem. I disco'd battery, reconnected, dome light is out, car started up.

- Erica T., Granite City, IL, US

problem #4

Oct 112010

Monte Carlo SS 6cyl

  • Automatic transmission
  • 80,000 miles

The SECURITY light started coming on intermittently about a month ago while I'm driving. Simultaneously, the head lights flash when the light comes on or goes off. I read in the manual that the SECURITY light comes on if there is a problem w/ the Passlock system and could also be for fuses. I checked all the fuses and none were broken, melted, or damaged. I tried starting it one day and it was completely DEAD. Nothing came on at all. I got a jump start and had to charge the battery for about 30 mins before it would start. After that it ran for about a month but the light continued to randomly come on while I was driving. It died again, same thing, no lights, noise, nothing. Got another jump, started right up again. The next day died AGAIN but this time it wouldn't start w/ a jump. It's sitting dead now and I'm trying to figure out what it could be. I may try to get a new battery to see if that works and if not, I may try to get a new key made to see if that helps. If neither one of these things fixes it, I will have to break down and go to a Chevy Dealership.. sigh...

- sofia, Kansas City, MO, US

problem #3

Jan 232010

Monte Carlo

  • Automatic transmission
  • 91,000 miles


I have a 2003 chevy Monte Carlo, the security light comes on causing the lights to flicker interior and exterior, car shut off car locked up, and now to make matters worse not only is the security light on so is the battery light and the service engine soon light is and im am starting to get very annoyed. When I take it to get checked out I get told that its probably the sensors but I have checked them out they are fine,the battery is fine and now I am in the process to try something else out, I wil update and let evryone know how that worked out.

- coronado1976, Flint, MI, US

problem #2

Aug 172009

Monte Carlo V6

  • Automatic transmission
  • 26,000 miles

Over the past 4-5 weeks we have started experiencing trouble with our Monte Carlo's pass lock system. For no reason the car's ant-theft system engages. The car thinks it is being stolen and locks out the fuel pump. The first time it was in our garage, second time at church, third time at work, fourth time at our childs ball game. Each time it seems we did somthing different to get it started. After reading the manual and multiple web sites about the problems Monte Carlo and the Impala have had we had a new key made. Our therory is the anti-theft system is reading the key improperly due to corrosion on the key, which engages the pass lock system. The store manager where we had the key made stated they had been making a lot of keys for this make and model of car for the same problem. If we continue to have problems with this we will post another complaint. Chevy has really let us down :(.

- Charlotte F., Springfield, MO, US

problem #1

Apr 172009

Monte Carlo LS 3.4L

  • Automatic transmission
  • 104,000 miles

The Car 2003 Monte Carlo Will Not Start Because Of The Security Light Coming On Wait Ten Min. And It Will Start From What I Have Read Not Just A Problem With The Impala But The Monte Carlo Too Seems To Be The Pass Lock System It Is Getting Old long long Time Ago.I Was A Big GM Fan But If They Wont Fix This Problem By A Factory Recall I Guess I Will Have To Buy A By-Pass Kit.

- Larry A., Toledo, OH, US

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