Last post on May 09, 2013 at 1:10 PM
You are in the Chevrolet Colorado and GMC Canyon
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Chevrolet Colorado, GMC Canyon, Electrical, Truck
#169 of 671 Re: GMC Canyon 2005 Woes [snaproll1]
Feb 20, 2009 (6:14 pm)
You are describing exactly what is happening to my 2005 Chevy Col I5 Ext 72K.
The problem is deep cycling the battery kills everything under the hood. I have changed out batteries twice now. First time was at around 55K when the original battery gave up the ghost, massive overheat and death.Second time was an 860CCA battery that lived about 6 months with two accidental drain outs. No, you don't need a "special" battery from the dealer.
I noticed you said you run a cooler through the ACC adapter. I run a 500W inverter all day in my truck, sometimes engine on, somtimes not. I power a laptop that draws like Vegas and charge camera, radio and cellphones batteries. I've had this vehicle from new and it was fine before I started using it for work. Apparently the regular deep cycling doesn't just 86 the battery but also kills off accesories and ultimately larger parts. My blower is now only working on level 4 (sound familiar?).
So I spent $200 on a Yellow Optima Deep Cycle Battery and we'll see how that goes. I spose I'll have to replace the blower motor.
#170 of 671 Re: GMC Canyon 2005 Woes [Alennx]
Feb 20, 2009 (6:39 pm)
Running an invertor can do damage to the old battery real quick. Thats why RVs with convertors run 6V deep cycle batteries that are made of charge/discharge and then if you let them go below 50% they become toast quickly too. Your lucky it hasn't got your alternator yet with all the drain on the battery makes the alt. run overtime.
#171 of 671 2005 Colorado flipping out
Feb 23, 2009 (8:40 pm)
This truck is having several electrical problems. It cuts out while driving sometimes to the point of stalling the engine.The tach has very erratic movement. The radio sometimes looses its presets and the clock returns to 12:00. The blower fan also acts up with only high speed available. all this gradually came about overnight. No service codes. All these problems come and go. Sometimes they all are evident, sometimes maybe one or two are showing up. It has never failed to start.
#172 of 671 Re: 2005 Colorado flipping out [duart]
Feb 24, 2009 (1:44 pm)
OK, we have the same problem. We are going to figure this out!
It's not the battery, I just put a new Optima Yellow in and the issues continue the same. It could be the alternator although last I had it checked it was putting out 14V. This was a spot check, not a monitoring over any driving time.
I am getting an occasional code... "rpm does not match the engine conditions." The suggestion is that the Air Intake sensor needs replacing or there's a vacuum failure. Does this explain the fluctuating rpms? Maybe. Does this explain the blower failure or the under-power while braking? Only if the drop in rpms leads to a drop in charge-back, which in turn drops below 12V. Why is the blower crapped out on 1, 2 and 3, but not 4? Should be the key to the problem but it makes no sense!
I am going to fit a Voltage Meter and watch what happens while I'm driving. I sometimes get my lights going dim and the revs dropping off under braking, which suggests that there's not enough juice in the harness to power the assisted brakes and keep everything else going... which leads me back to the Alternator. I am willing to bet that anyone who has had this issue has been running larger accesories for a period of time through the two power points and this has knackered the alternator as it attempts to keep up with the over-drain.
I am also going to get my belt tightened. I'll post as I go.
Let us know what you try. One thing I do know, The Chevy Dealers I've spoken to have no idea what the problem is and will do fuse-block or computer changes just to charge the **** out of you. I'm calling Chevrolet Corporate right now to confirm they have no idea...
#173 of 671 Re: 2005 Colorado flipping out [Alennx]
Feb 24, 2009 (2:08 pm)
Hey guys, your blower fan is just the fan speed resister that's located under the dash on the passenger side. It's easy to replace and costs about $20 or $25 at the dealer. Two screws and a wire plug. When you remove the plug, look at the contacts inside of the plug - look closely. If there is burning of the contacts then you'll also need the harness and you might want to let the dealer fix it unless you are very comfortable with that stuff... The reason that it works on position 4 only is that in position 4 the resister is bypassed and 12 volts is going directly to the fan.
About the lights dimming when you press your brakes... there was a brake recall some time ago. You might check to see that was taken care of. Also, if you replaced your stereo or added some other after-market item maybe some wires got repositioned and are touching the brake mechanism??? Just a thought.
Look, I don't work with any car dealer or anything but I know that if you call the service department at ANY car dealer, they are not likely to help you. Why??? Let's put it another way... if you walk into your favorite grocery store and ask them for some free milk, eggs, and steaks do you think that they are going to just let you have those for free? Of course not but yet some people want what the service department sells for free. They are selling their knowledge, experience, and time. They get nothing if they tell everyone how to fix their problems on the phone for free. I know that you and I spent a small fortune for our vehicles but the dealer didn't make the car or the problem. I hate taking my vehicle in for maintenance too but you have to do what you have to do sometimes...
With that said, I've had a problem with my Colorado door locks for months now and I'm too tight to go get it fixed - I won't call them though.
#174 of 671 Re: 2005 Colorado flipping out [mrwebman]
Feb 24, 2009 (3:24 pm)
Excellent heads up on the blower, I'm going to look at that in a minute.
I found in my research that the MAF is affected by a dodgy alternator or battery. The MAF is attempting to maintain the temp of the hot wire and changes the fuel/air mixture according to the flow & temp of the incoming air, conversely if the power delivery to the MAF is dropping off, it will have the effect of changing the mixture because the hot wire is not as hot and the return signal to the computer is changed.
I have a new battery so all roads continue to lead to the alternator. I'm going to get me a charge meter... no way some guy is going to line his pockets with my hard earned cash just because he has a family to feed and a mortgage to pay!
Here's a question... if I had the original battery (1 year ago) and it had to be changed out because it was boiling hot, so hot you couldn't touch it. Would that mean the alternator was over-voltaging the harness in order to charge the dead battery, since the dead battery was now acting as a huge resistor?... and would that lead to cooking the blower (1,2,3), and my CD/radio lights, and my CD player?... and would that lead to permanent damage to the alternator? Tell me I'm wrong, please
#175 of 671 Re: 2005 Colorado flipping out [Alennx]
Feb 25, 2009 (3:12 am)
Pollution control Module was defected or shorted out. This was replaced in my truck along with reprograming the Brain. Thank god it was covered under warrenty. Repair would have been aprox. 1,300.00 . Dont plug in power inverters or accessories to vechicle it creates feed back to some electrical componates.My truck now runs fine.
#176 of 671 Re: 2004 Chevy Colorado Electrical issues!! [dtower77]
Feb 25, 2009 (3:10 pm)
Hello, I Have the same problem you have only in a 2004 Colorado, I was just wondering how you went about fixing it?
#177 of 671 Re: 2005 Colorado flipping out [briguy7]
Feb 25, 2009 (6:21 pm)
Just what I wanted to hear 72K miles. $1300 repair bill? Thanks
So, I had the charging system tested at Kragens and with the lights and inverter on and under full load, the alternator was pushing out 14.7V. No other electrical issues detected during startup or engine-off either.
Get this, the engine light came back on and the engine dropped below 500rpm while he was running the test and the alternator kept pushing 14.7V!!!
So, according to Kragens, the alternator is fine, the battery is fine AND this morning the blower started working again and my CD player started working again. Tell me that the devil is not at work here!
The engine is coding that the RPMs are out of range so it could still be the MAF or I could have a vacuum seal break OR the "AIC?" sensor could be jacked... but that doesn't explain the random stopping of circuits, unless the computer is turning stuff off randomly, like when you first start the engine... what if the computer... no... yes, that's it. It has to be.
There's no over-drain protection on the acc circuits because I've killed a battery twice draining it out over a week by accident. The computer is turning off individual circuits like the blower, the CD player... but the accessory circuits are staying on, WHY! Surely that would be the first thing to go? No, because they are not controlled by the computer whereas the internal circuits, blower, etc are... Outside stuff is my own fault. Makes sense to me. You know Isuzu is selling this truck also?
So I have MAF cleaner and throttle body cleaner. Next I'll get the AIC? sensor checked and then if there is no improvement after that, It will be destined for the shop. DARN IT!
#178 of 671 Re: 2005 Colorado flipping out [mrwebman]
Feb 28, 2009 (3:21 pm)
I understand the blower speed is controlled by resistors. But this is not continuous. Sometimes the fan and all other problems work fine. When you lose a resistor its over. It don't come back. I am really starting to believe this is a bad ground problem.