Last post on Nov 25, 2013 at 5:21 PM
You are in the Chevrolet Colorado and GMC Canyon
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Chevrolet Colorado, GMC Canyon, Electrical, Truck
#623 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and more... [morgmach]
Feb 08, 2012 (11:04 am)
Unfortunately most vehicle manufacturers are going to body computers with the associated problems. Commonly, maybe all you need to do is to pop out the drivers door module and lube all the plugs with di-electric grease (also the pax door too). Sounds like your other trouble was with the anti-theft system which turns off the fuel if it cannot recognize the key.
A friend of mine had a GMC Envoy that the drivers lock/window module burned up internally. Replaced the module with a brand new one but here is the clincher!!! The window/lock module has to be PROGRAMMED to the vehicle for it to work!!! What a bunch of crap. I called around and got estimates from $50 to $100 to program it (a 15 minute job). $50 is not too bad so he will have it done there.
The problem is that Car manufacturers charge about $1800 a year to access their database for programming files. The equipment to do it also costs a boatload. The Lawmakers need to do something actually useful and put laws through that if a company makes vehicles with computer programs and updates, that it needs to be FREE or very low cost for all repair shops to be able to work on the vehicles.
With computers controlling most of the body functions now, it is actually easier and cheaper to WIRE the vehicles. For instance all functions of a drivers module (ie door locks and windows and etc), can be sent to the body computer using a single wire. Before this, a drivers window switch had all the wires from the other doors passing through it before going to the other door buttons and etc.
The problem is that if it is cheaper to do this, you don't need to charge to update or program different modules to work when they go bad.
Forward this letter to CONGRESS LOL LOL LOL
Dennis Tomlinson, Licensed master mechanic
#624 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and more... [den052]
Feb 08, 2012 (6:47 pm)
"Forward this letter to CONGRESS LOL LOL LOL"
Congress? You mean Obama.
He needs that BCM repair money rolling in so that it can become campaign contributions.
#625 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and more... [morgmach]
Feb 13, 2012 (10:38 am)
I totally agree. No more Chevy's for me either! I grew up living and loving chevy's and my dad will probably disown me for pulling up in a ford, but I've owned two F150's in the middle of all the different GM products I've owned and never had the trouble with them that I do with GM or my 2005 Colorado. I've probably spent over 2000.00 on my truck in the past two years just keeping it on the road. I just put in my 5th window regulator. My driver window and door locks have been on the fritz for the past couple weeks now and its 35 degrees outside and my window is half-way down! My service engine light comes on constantly. My ABS light comes on at least once a day! I've had a bearing on the front driver side go out while driving down the interstate; total bill 735.00. My radio died and would not spit out a cd so I had to replace it as well. Now my windshield wipers will not turn off. I've changed the motor and relays. Now waiting on my wiper switch to come in the mail so I can replace it to see if that is the problem. Last but not least I can not turn on my headlights at all. I can wait till it gets dark and let them come on by themselves, but if I turn the switch to the on position they go off! Not sure what to do about that one yet! I would hate to see the bill If I had taken this to a dealership for every instance. It would probably be well over 4,000.00 to pay their hourly charges. If the Lord's willing this will be the last Chevy that I will ever own!
FOR SALE: 2005 Chevy Colorado 130k miles. 4x4 Crew Cab
#626 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and more... [princelee420]
Feb 13, 2012 (1:44 pm)
Ah and yet another happy customer/fan of the Colorado! are ya listening "PEGGY?"
Randy Wise Chevriolet Milan Mi. THE WORST DEALER ON THE PLANET!!
#627 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and mor
Feb 13, 2012 (2:55 pm)
I had to change the battery for the first time on my 2005 Colorado yesterday. Now my door locks won't work, drivers window won't work, and I did notice the heater for a split second would go off then back on. So by reading all of these posts, this is just how it is for this truck? Geez........Only has 88,000 miles on it and only about 1,500 of that was mine as I bought it in 2009. How sad that they know this is a problem!
#628 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and mor [luciro]
Feb 13, 2012 (3:32 pm)
luciro: If you pop the drivers door module out using a table knife or wide screwdriver, just unplug the module. Apply dielectric grease available at a parts store to the connections. Replug the connections and try the switches. Mine has been working ever since (knock on wood). The fact that you switched batteries really has nothing to do with the door lock/window problem. It was just that it happened at the same time. Believe me, as a mechanic for over 40 years, I have disconnected and reconnected my share of batteries and the minute you disconnect the battery you shut down both the engine and the body computers totally. When you reconnect the battery cables, the computers come back on and initalize like they should. As a matter of fact, the vehicle computers are HARD WIRED and the computer program is burned into a chip. The only way you can change the programming on them is to REFLASH the memory chip with a special tool called a TECH2 for GM. They operate totally different than your home computer and as of yet is not possible to have a VIRUS. It may be possible to introduce a virus, but as soon as the power is removed the virus would be lost and the computer would reinitalize from the onboard read only memory that cannot be changed without a reprogramming tool. So in other words, it would be impossible for a virus to replicate itself from one vehicle to another because there is no removable memory as of yet such as a hard drive.
Of course this is the current technology and that could change as it has been discussed that virus could pose a problem in the future with different forms of memory devices. As of today, current vehicles cannot harbor a virus.
I am a master vehicle technician but also a computer technician too.
#629 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and mor [den0520218]
Feb 13, 2012 (4:19 pm)
Thank you so much for your prompt reply. I sure hope I can get this corrected. Very disheartening reading all of these posts on the same problem. Really makes me think I should get rid of it before anything else goes wrong. Again, thank you so much for your help!
#630 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and mor [luciro]
Feb 14, 2012 (2:45 am)
This happened to me when I cleaned the battery terminals one day. I had left the drivers window down when I did this. After reading and trying many of these posts on how to fix it, none of them worked. I finally took the drivers door window switch appart and jumped it directly to the battery and rolled the window back up. I went to back the truck out of the shop and the locks worked and the windows worked. When I finally had to change the battery, I made sure the drivers window was up, no problem this time. I have 152,000 miles on this 2005 Colorado Crew Cab. Just took it to Florida from Colorado and didn't have any trouble.
#631 of 684 Re: Colorado - power locks and open doors! [gmcustsvcsarah]
Feb 14, 2012 (5:46 am)
I read further down that you couldn't help someone because they were in Canada. . . well I guess that means you can't help me either!
#632 of 684 Re: 2005 Chevy Colorado Ignition Problems, Windows & Locks problems and more... [den052]
Feb 15, 2012 (6:58 am)
"As a matter of fact, the vehicle computers are HARD WIRED and the computer program is burned into a chip. The only way you can change the programming on them is to REFLASH the memory chip..."
I don't believe this is entirely true. I'm not intimately familiar with automobile computers but I do know a bit about them in general. Granted much of the executable code on these BCMs, ECMs etc must be read only, there has to be some writeable areas (at least e-proms or flash memory) to store error codes etc.
I'm wondering if with the truck's electrical glitches some bad program code gets generated? Here's an example. Let's say the BCM is "programmed" for a particular body style (two or four door) and installed options (side airbags, Onstar etc). This stuff would have to be factory programmed and remain unchanged during the life of the vehicle. What happens if because of the crappy grounds on the truck, the shorting fuse blocks and other electrical gremlins, these prom areas get smoked? Either they get changed to non-comprehensible codes or literally do fry from a voltage surge?
Here's a 'thought' of where I'm going with this. I have no ideal how close I am to how these computer systems work, but I have to be in the ballpark. Let's say there is a programmable longword, (32 bits) in the BCM. Each bit represents whether some elecrical subsystem gets power depending on the vehicles options. If a bit is set, the option (horn, airbags, windows, door locks etc) get power. The eprom gets programmed at the factory. Life is good, up to the point of a voltage surge, faulty ground or disconnecting connector socket, buring up blower resistor etc. This causes a voltage spike which fries or reprograms the eproms on the BCM. In short, bits get flipped or cleared. Now you have power being sent to wrong circuits at the wrong time (possibly tripping other error codes) or causing really weird and unexpected results, (the kind of weird stuff people have been reporting on this truck like turning the radio on causes the windshield wipers to work).
It also explains why sometimes disconnecting the battery can work. If the eproms remain ok, and just weird error codes were generated, disconnecting the power would allow these codes to reset and things would be ok until the next glitch.
Of course you don't suspect this so you take the vehicle to a dealer. They read the scrambled codes and deduce that "the BCM is bad" and happily charge you for replacing a perfectly good BCM. When the problem happens the next week, they say the BCM is bad again, and again, and... the Colorado/Canyon becomes the gift that keeps on giving... to the GM service departments.
In the meantime there are the real electrical and mechanical problems that crop up that could cause the whole thing. The bad grounds. The poor electrical connectors like on the blower resistor. The crappy CD player that can't read half the CDs you put in it. In other words, just poor GM design and lack of quality. These things fry and potentially start the ball rolling and the whole electrical system becomes unstable and unpredictable.
Otherwise how can you explain some of the weird things people have reported? Just weird stuff like, "I turn on the radio and the lights go off" or what was that last deal a few posts ago, "I turned the ignition and the truck wouldn't start. When I turned the key off it started cranking". How else can you explain weird stuff like that other than a computer controlling everything getting scrambled? How else can you explain just letting it sit with the battery disconnected for 6 hours "fixing" anyhing? Obviously something elecrical had to "clear" for this to sometimes work. Why doesn't to work all the time? Because all these problems probably do cause things lik the BCM to eventually fry.
I've been following these reoccuring problems with the Colorado/Canyon since 2007 and after this much time, that's my "theory". The pattern makes sense, at least from a computer standpoint, but again, I have no cluse if I'm all wet with how they work in vehicles.
If what I'm saying is somewhat true, there basically is no way to "fix" the vehicles short of ripping out all the electronics, electrical system and computers and redesigning them. Every ground would have to be checked, scraped and ensured of a good contact with the body. All underperforming parts like the electrical connectors on the blower resistor and frying fuse blocks would have to be replaced. The alternator would have to be beefed up. The list goes on.
Now I think you have an idea why GM will never acknowledge the problems with the truck. There were too few of them sold to justify such a huge expense just to satisfy so few customers. Much better to write off the truck and their owners, (especially when the only customer that really matters is their CEO Obama).
So GM writes off the truck and the owners, with one exception. Why pass up on all the lucrative repair money? So they invest to have "Peggy" prowl the forums, "appologize for your frustrations" and try to drag the truck owners to the nearest dealership so they can get their commissions.
The bottom line on the Colorados and Canyons is pretty clear. Get the truck working the best you can and dump it. If my scenario above is correct, the truck will never be "fixed". It will continue to be a money pit. You don't need an extra weird electrical problem every six months that costs $500-$1000 on average to fix on top of the normal expenses on an aging truck. Trust me, I know. I really loved my Colorado.... up until the fourth or fifth weird and expensive electrical problem.
There are enough vehicles out there like the Toyota Tacoma that do the same job. Toyota and the others stay in business because satisfied customers still mean something to them, where GM depends on government bailouts and the Chevy Volt as their future. (So what if they don't work as advertised, Obama is the only one they need to impress).
I finally gave up on my Colorado but still follow this thread. Hard to believe it is over 600 posts. And still, every week there is somebody new that finds this thread with the same story, window/fob (or some other weird electrical problem) and with the same, "the dealer said they never heard of it" reply.
What else can be said? GM=