The contact owns a 2006 Chevrolet Colorado. The contact stated while driving 65 MPH, the check engine warning light illuminated and the vehicle started to shake. The contact was able to drive back to the residence. The contact stated that several independent mechanics diagnosed the vehicle and stated that the cylinder head needed to be replaced. The vehicle was not repaired. The dealer or the manufacturer were not contacted. The failure mileage was 216,000.

- Pittsburg, CA, USA

I try to crank the truck and it won't do anything but I can wait about 15 minutes and try it again and it will crank. This has been going on for about 5 years. Vehicle was stationary.

- Rossville, TN, USA

Fire in the engine wiring, fuse box, battery store parking lot parked engine off GMC took truck said it wasn't a factory issue no information was given to me said it was confidentual had truck 6 weeks

- Portland, OR, USA

On July 1, 2018, my son was driving his 2006 Chevy Colorado on the freeway when it combusted in the front driver's side engine area. Thankfully, he was able to exit the vehicle before it became fully engulfed! the pickup burned entirely, very hot and very quick. See attached photos. I did contact GM, as I see there have been many claims of fire in these vehicles. However, GM was unwilling to put effort into trying to determine the cause of this fire that endangered my sons life!! I have received no answers, no compassion, no follow through. It is beyond disappointing for a company such as General Motors to not be doing a better job for their consumers.

- Council, ID, USA

While in motion, anti-theft light flashes on dashboard and vehicle engine cuts off. Must shift to neutral and restart engine. Very dangerous. Same issue that affected other GM cars, that were recalled.

- Newberry, FL, USA

The contact owns a 2006 Chevrolet Colorado. While driving 22 mph, the vehicle stalled. The contact was able to restart the vehicle. The failure recurred on numerous occasions. The vehicle was taken to a dealer who was not able to diagnose or repair the vehicle. The manufacturer was notified of the failure. The failure mileage was 68,500.

- Slidell , LA, USA

The contact owns a 2006 Chevrolet Colorado. While the vehicle was parked, the engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the valve seat needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 94,000.

- Duluth , MN, USA

The contact owns a 2006 Chevrolet Colorado. The contact stated that the vehicle hesitated, sputtered, and the check engine light illuminated on the instrument panel. The vehicle was taken to the dealer. The technician diagnosed that the exhaust valve to the cylinder heads and the cylinder head needed to be replaced. The vehicle was not repaired. The failure mileage was 109,000.

- Lynnwood, WA, USA

The contact owns a 2006 Chevrolet Colorado. While driving at an unknown speed, the vehicle stalled and the check engine and power reduced lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 100,000.

- South Lyon, MI, USA

This at times wont start then it will when it sits some one being followed is beput in danger if the wont start to get out of a dangeruos situaion.

- Hanoverpark, IL, USA

The contact owns a 2006 Chevrolet Colorado. The contact stated that while driving 35 mph, the vehicle stalled without any warning and failed to restart. The failure recurred twice. The vehicle was not taken to a dealer or independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 24,306.

- Coppercole, TX, USA

I am going to get gas and go in side to pay and it wont start cranks no advise I had the same 5 times before the midway Chevrolet fix it a bad ignition switch part #63779 O a bill for the parts $416.74 the theft system would work and it would stop working it is a switch for the gas I think I need to be pay back.

- Phoenix, AZ, USA

Once started once in awhile is happening more ofter I park my car at work supermarket etc and the car will not start I believe its the theft protection the lock light goes on and I need to wait 10 to 15 mins before the car will start again just tonight I was going home from work stop to get gas and had to wait again before the car started and just a few days ago last sun I had the same problem at the store and I hope it starts before the food goes bad been lucky it least 10 min and the most up to 20 min I got a recall letter and wonder if that was the problem thanks for ur time.

- Hallandale Beach, FL, USA

Engine had a misfire and would stall sometimes when you made a tight turn at low speeds. Found out it had a bad value seat causing it to have the misfire. GM messed around and wouldn't fix it. Red other people had bad value seats too. Spent my own money to get it fixed.

- Fort Worth, TX, USA

Vehicle purchased new on 05/2006. Less than a month after purchase the vehicle would not start due to passlock system believing the car was in the process of becoming stolen. Owner would unlock vehicle with key fob and place key in ignition to start, but red lock icon on dashboard would blink and engine would not turn over. Original key and original key fob used at all times of occurrence. Owner would have to wait ten minutes and try again if vehicle would not start for passlock system to disengage. While under warranty, customer brought vehicle into GM dealer multiple times and the problem could not be verified. This left customer stranded in multiple locations at times and in situations that could have left owner in a dangerous situation based on area. At one point, customer could not start vehicle after a half hour, he than called GM and had the vehicle towed under warranty, the GM dealership stated problem was fixed or corrected. Now, no longer under warranty vehicle has same issue occurring intermittently. Cost to replace passlock sensor is too costly for owner to afford. Other vehicle maintenance is properly done according to owner's manual by local mechanic. Owner has uploaded video of issue experiencing; please visit youtube at https://www.youtube.com/watch?V=mfdjho_hiy4&feature=youtu.be.

- Biloxi, MS, USA

The contact owns a 2006 Chevrolet Colorado. The contact was driving 60 mph when the vehicle stalled without warning. The contact was able to restart the vehicle and took it to the dealer for a diagnostic test. The dealer stated that the intake boot hose, cam shaft sensor, fuel cap, crank shaft sensor, water pump, manifold pressure, and thermostat needed repairing. The components were repaired but the failure was not corrected. No further repairs were made to the vehicle. The failure mileage was 109,171.

- Whittier, CA, USA

2006 Chevrolet Colorado purchased new on 11/30/05. On May 27,2013 service engine soon(ses) came on and stayed on. Took truck to Chevrolet dealership and diagnostic code revealed an engine misfire. They turned light off, test drove, light did not come back on and sent me on my way. June 17 2013 ses light came back on. Took back to dealership, they performed a "leak down test" that showed multiple misfires in engine, a $4000 repair. Contacted GM and was told they had sent a letter to Colorado owners dated 8/2007 warning them this problem might occur and GM would extend the warranty to 7 years or 100,000 miles, whichever comes first to cover the problem. However, the letter also said not to take the truck for the fix if owner was not having the misfire problem. I never got such a letter-don't know why. I could not fix a problem I did not know I had! by the time my misfire problem occurred it was about 6 mths.out of the extended 7 year warranty but well under the 100,000 miles. Told all this to GM but they said "tuff". in my mind, by extending the warranty and even developing a special tool to help dealerships reduce labor costs, GM is acknowledging the defect in the factory built cylinder head. GM says the only way to fix the misfire is to replace the cylinder head and it's integral parts, again a $4000 repair. Even a cursory search on the internet shows thousands of Colorado owners with the same problem. This has to be a factory defect.

- Morgantown, WV, USA

After about 2 years after we had the truck serviced for valve system issue which we were notified about via mail. We began having these starting issues that many of you are also describing. We took it back to dealer as it was still under warranty. We were told they needed to do a complete diagnostic on it which we could not afford. We purchased the truck in 2007 with 25000 miles and full warrantee. But diagnostics isn't part of that. So we have only recently began investigating tis issue more in depth, as we were told it was probably an intake issue or and exhaust issue. Only now are we seeing that it may be due to this passlock security issue that many of you are also mentioning. Over the years we also have experienced the same identical symptoms with cranking yet no actual start. Wait approximately ten minutes and she fires. It happened randomly at first. Then became more frequent. After fueling up etc. But not immediately after fueling. Now it has become almost a weekly occurrence. And the duration for wait time is lengthening to 20min-1/2 hr. All this time I allowed myself to believe it was something with the fuel system.... if this is a common problem....others need to be made aware as well. Is this a defect that was overlooked or blatantly ignored and not shared with the consumers? it does pose to be very unsafe in multiple circumstances. If this is an known issue, then why are we having to learn about it from one owner to another. Because no mechanics (dealership or other wise) has ever mentioned this as a potential issue.... always the same story. Must be a different issue... etc. But to realize it is a security feature gone whacky..... I don't know how any of you feel.... that doesn't make me feel safe. Thank you all for all your help and information.... thank you ever so much.

- Fontana, CA, USA

After my vehicle gained 67xxx it began to have issues with the anti theft system. When I turn my vehicle off, and turn it back on the anti theft light blinks. This has stalled my vehicle. When I attempt to turn it on the engine will crank and the lights flicker on and off. After doing some research I have found that numerous people have also encountered this issue. The only fix know at the moment is to wait 10 minutes and then the engine will start. This can become a nuisance and a danger. I had recently encountered a nail in my tire. I had to pull over on the highway to check what was happening. When I shut my engine off I was stuck on the highway due to my anti theft light blinking and my engine not starting due to this anti theft issue. I have addressed this with GM and also the local dealer with no success for assistance. It was suggested that I do a diagnostics test, but that would run me upward of 400+ to figure out what is going on. I find this to be a manufacture issue. Numerous people have addressed this issue online.

- Honolulu, HI, USA