Chevrolet has a known ignition system defect since March 2009. My 2004 Chevrolet Colorado intermittently does not start and then starts on the second try. Chevrolet's document: "#pip4575B: Intermittent click no crank or brief crank no crank with dtcs - possible crank sensor - keywords bqmi - (Mar 11, 2009)" explains the defect. I took my Colorado in for service on 04-05-12 because it was not starting at all. They advised me the ignition cylinder was "not reading the key" properly. They replaced the ignition cylinder and reprogrammed a new key. This repair did not correct the intermittent no crank problem but did bring the problem back to the state where it would start on the second attempt following a no crank occurrence. I am convinced the initial ignition defect was the eventual cause of the complete failure of the ignition to start the vehicle. I believe this could be a safety issue on the vehicles affected by the intermittent no crank problem. If one of these vehicles stalled out, the possibility the vehicle could fail to start immediately, could cause an accident. Even though Chevrolet claimed the problem was under investigation, there has been no notification of any fix for the problem that I know of. I would also note that Chevrolet is charging customers for diagnostic testing and ignition cylinder replacement even though they have know of this defect since 2009. However, replacing the ignition cylinder and reprogramming a new key is not correcting the original "no crank" ignition defect.

- Rome, NY, USA

Intermittent non working power door locks wipers headlights and windows! there are hundreds of these incidents posted online. There looks to be thousands of dollars in repairs with no solution!

- Medford, OR, USA

The electric system is knocking out the brake light and cruise control on all 2004 and up Chevrolet Colorados. I was driving home from work just to be pulled over because the brake lights weren't working he told me the guy behind me almost nailed me because of it. I didn't know! but I did know of the Colorados having a big problem with the electric system knocking out the brake lights and cruise control. So I got on line to see just how bad it was and found out it's no laughing matter all most every Chevrolet Colorado truck has this problem. Just thank of coming to a stop from 65 miles an hour and not having brake lights, I and some people on the road with me got lucky today. I called two of my closest GM dealers to try to get it fixed today and asked did they know of a problem like this and they did but GM has no recall it's at the owners exspense to get it fixed, while I told them both what I found out online. The answer from them was no one has died yet. **** that's what it takes to get some things fixed now days for some one to die before the companies fix a defective vehicle. Please can someone force GM to fix the problems with the Colorado trucks please help out us owners of these trucks we can't keep spending money like this I also have spent hundreds on other problems through out the seven years I owned the truck. Times are tight can't just go out and buy another vehicle. Look online these trucks are prone for trouble and people don't know it until they have bought the truck.

- Richmond, VA, USA

I have replaced the master switch that controls the locks and windows once already. Got a new switch and it still doesn't work. I called GM and they said that there were no recalls on my truck for that issue. I can only lock and unlock the driver's side door with the interior panel or the remote- the rest of the doors do not lock/unlock.

- Hazel Green, AL, USA

I noticed that when using the remove only the driver's door would lock and unlock. I go into the truck and used the panel and again only the driver's door would lock and unlock. I paid out of pocket to replace the switch inside the truck on the driver's door that controls the windows and the locking system. It worked for about 8 months and it has gone out again.

- Hazel Green, AL, USA

For being mechanically inclined this is definitely one problem I cant fix. I did the pads and rotors on my 2004 Chevy Colorado, all went well, nice and easy. Later that week my ABS light came on. I had my breaks checked and the mechanic said it wash showing wheel speed sensor. I bought the part and replaced it nice and easy again. The light turned off for about 2 min then came back on. The next time I went to drive my truck I turned it on, the sensor was off then the ABS system started engaging on and off making a weird pump sound and making my brakes engage and disengage. This happens for about 20 sec then goes away and the ABS light comes back on. I thought nothing worse could happen after having the computer replaced twice on the truck. This is worse.

- Chula Vista, CA, USA

The contact owns a 2004 Chevrolet Colorado. The contact stated that the resister for the wiring harness was defective and smoke would emit from the glove compartment. The dealer and manufacturer were made aware of the failure, but offered no assistance. The vehicle was not repaired. The failure mileage was 96,000 and the current mileage was 103,000. The VIN was unavailable.

- Spring, TX, USA

Cruise control still not working had it in to have it checked they replaced the recall than I took it and still did not work than took it back than they replaced another switch than they said the cruise was commanding on than I took it and tried it and nothing worked.

- Broadalbin, NY, USA

The contact owns a 2004 Chevrolet Colorado ls. The contact was driving 5 mph when every warning light on the dashboard continuously illuminated. The vehicle was taken to the dealer numerous times but the dealer was unable to determine the cause of the failure. The vehicle was repaired several times but to no avail. The manufacturer was contacted but offered no assistance. The vehicle was not further repaired yet the failure persisted. The failure mileage was 70,600.

- Waltham, MA, USA

Sometimes, especially in winter months when it is cold outside the door locks will stop working. For example, using the remote to lock the doors, they won't lock and the security alarm (horns) will go off if you open the closed door because the computer system thinks the door is locked sending security system into tamper mode. Also when shifting to drive, the doors will not lock as they normally do when vehicle is shifted out of park. Also some lights may not illuminate such as the left front side marker lamp/turn signal. Eventually the electrical system will reset and the door locks will work normally. It isn't just during cold weather that this happens but it seems to happen more often during colder weather. GM dealer replaced a couple of switches when I brought my truck in while under warranty but haven't brought it in since the expiration of my warranty and it still does it on certain occasions.

- South Ogden, UT, USA

The HVAC blower motor resistor assembly melted on the vehicle. The current passing through the unit is sufficient to melt the connector and degrade the wires to brittle. I believe this is a possible fire hazard. A number of co-owners have found the same defect. The connection in question terminal (C) goes to a ground distribution block that might not be sufficient.

- Concord, NC, USA

Front turn signal lights don't work fixed twice now saying the fuse box is the problem. Blower motor does not work after 3 blower motor resistors a new blower motors and connectors. Sometimes the radio does not work. The truck has stalled driving on the highway 3 times all loss of power.

- Oakland, TN, USA

2004 Chevy Colorado ZQ8 HVAC blower harness and resistor. Part was replaced at approximately 15,000 miles under mfg warranty with identical parts. Again out of warranty with no new revised parts at 45,000 and now again at 77,000 miles. Harness and resistor failure had gotten so hot each time that it had melted the harness to the resistor. Possible fire hazard, with severely burnt wires. Looking it up on forums this is common on all GM model Colorado and canyon trucks, GM knows of the problem, but refuses to offer a revised part or real solution.

- Sweetwater, TN, USA

I replaced a second brake light switch. First one was replaced under recall. Dealer said no open recalls for my vehicle. I had to pay out of pocket. Since this is only a $10 part, it's not the price but the safety issue. I have filed a complaint with you on this same issue on 12/16/2005 - (please refer to ODI number 10145757). Again I don't know how long this switch was defective, but I have noticed other vehicles tailgating more frequently in the last couple of weeks. This could have been out a day, or months. I am very concerned with a future accident, or an accident involving other 2004 Chevy Colorado owners, since the part I just purchased from the dealer has the identical part # - 25796381 - as the one I replaced. Without going into major detail, I again ask you to refer to the above ODI # as this complaint has the identical basis. Since I only have 44,900 miles on my truck, I would like to see a permanent fix for this part since it is a dangerous situation to drive without brake lights. Thanks for your time.

- Shenandoah, PA, USA

I have a 2004 Chevy Colorado. The problem I am having with my vehicle is the A/C switch will not work on setting 1 through 3. although 4 works all the time. I have had it fixed 3 times since I bought the truck by a Chevy dealer yet the problem keeps happening, and once again it has stopped working. I have read many automobile forums and it seems many people are having the same problem yet Chevy has yet to issue a recall.

- Marion, IL, USA

I have a 2004 Chevy Colorado, and this past week the brake light switch went out and caused my brake lights and cruise control to not function. My mechanic informed me that there was recall 09V310000 to address this issue. When I called my local dealer, they said that the recall was already filled in 2007 by the previous owner, and they could not help me. When I called GM corporate office, they said that due to the high miles (125,000) on my truck and the recall already being filled that they could not help me. The woman on the phone said that if the miles were not so high they would help me out. Also, she then went on to say that even with high miles they would have fixed it if the recall wasn't taken care of in 2007. She said that GM will not take care of a recall a second time even if it is the same problem recurring. It is ridiculous to think that there is a known problem with this switch, has been recalled, has been fixed, still not functioning correctly, and GM will not address the issue when it continues to fail. If it is such a problem that GM will do a recall for the part, why is it not a big enough problem to fix correctly or another time with the faulty part fails again? the consumer should not be stuck with fixing a part out of their own pocket for something that continues to fail and is under recall currently!

- Littlestown, PA, USA

My 2004 Chevy Colorado ls 4X4 has an issue with the passlock system that shuts my truck off while driving down the road when this event happens I loose my power steering. This is a well known problem that has no fix. The Chevy dealer says it's a common problem with no real definitive solution.

- Huntersville, NC, USA

I have a 2004 Chevrolet Colorado extended cab that continues to experience intermittent electrical problems. The airbag sensor light comes on unexpectedly, the fan blower intermittently stops working on settings 1-3, and the front turn signal bulbs go out every 5000-6000 miles. I can usually brush the components under the glove compartment to get the blower working, and the airbag sensor usual goes out after a week or so.

- Falls Church, VA, USA

Colorado 2004-- the driver's window stops working and battery goes dead. The body control module is replaced. Then the fuse block has scorch marks. Possible fire. This is a common problem with a chev. Colorado. Repairs are being done by a local repair garage. Chevrolet has moved out of our area. There is some problem with the fuse block just waiting for a major fire or property damage to happen.

- White Stone, VA, USA

Blower motor resistor connector overheats, whereas a terminal burns, creating a poor connection and no power.

- Westford, MA, USA