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Pickups Chevrolet Colorado and GMC Canyon Chevy Colorado and GMC Canyon Engine Problems
399 messages, Last post on Nov 24, 2009 at 7:18 PM
You are in the Chevrolet Colorado and GMC Canyon Forum. Your Host is kcram
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I have a 2004 Canyon, 178,xxx miles since new. If you start getting low idle/ check engine light with "low idle speed" code after 30k miles or so, clean the throttle valve assembly. I clean mine every 50k. Carbon buildup in the assembly changes the position of the air valve at idle and throws the idle circuit off. You need a flat blade screwdriver, a 1/4 in. rachet with 6 in. extension, a 10 mm socket, a can of throttlebody cleaner, and a paper towel. Remove the aircleaner top (3 snaps), the cleaner to intake pipe (2 hoseclamps), the oil vapor chamber (big plastic box on top of engine, 2 bolts and a vent hose). this leaves the throttle assembly with 4 bolts and a wire connector. Remove and clean (wipe, don't just spray) the passageway thoroughly, making sure you open the valve with your fingers and clean the seating area. Re-assemble. iIt takes 25-35 minutes and 5 bucks; not even worth calling the dealer for. If you're going to own a truck, you should be able to do some of this stuff for yourself; you can't expect the dealers to wipe your butt for you. If you want that kind of service, buy a BMW or Mercedes- the pricetag will reflect your right to have the ashtray emptied for you on demand. On Tires, I burn a set a year - figured out they had the wrong alignment specs from the factory on the second set- a good shop is one where they know how to adjust the specs to make the alignment right; my guy made his own adjustments and I haven't had an issue since.
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Replying to: puregreen (Jan 20, 2009 1:29 pm) With respect to the tire/alignment discussions, I decided to put my truck on the alignment rack, since it hasn't been on one since it was a couple of days old. All that was required was a slight toe adjustment, as the caster/camber were OK. The truck always drove well, once I got the OE General tires off of it, and was still doing so. However, after 4 years to "settle in", I wanted to check things once again.
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I have an 07 Colorado 4 cylinder, 4wd. I've had no problems with the engine, altho the lack of low end torque is annoying. Shoulda bought the 4.10 rear end. With regards to alignment, the truck always tended to wander a little, so I finally got off my lazy hind end and took it in for a check. Man, what a difference. Guess GM doesn't do the greatest job aligning them. The tow in was way off. I suspect it's been that way right along. I also had them put some new shocks on it, which also made a big difference. I intend to add a rear sway bar. In 07 this was not even an option.
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Replying to: longrunner1 (Jan 26, 2009 1:40 pm) 
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Replying to: harveykarisma (Jan 29, 2009 8:07 am) |
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| I took to the dealer and they said it was the throttle body and it needed replaced, they said they would do it under warranty but was not sure if it was covered or not, just wondering if that item is covered, i didnt get a bill. But we will see if the light comes back on or not. | |
i have an 05 colorado. engine light came on three months ago. i do most of the maintenence on the truck myself, never had real problems with it. Started running rough at idle. replacing plugs and ignition coils didn't fix the problem. I took it to the dealer finally and they said the head needed to be replaced ($3000). Never got a letter in the mail or i would have brought it in. They don't care because the truck has 106650 miles on it so now they don't have to fix it. It is a work truck that i put alot of miles on. If i had taken to the dealer when the light came on three months ago i would have been under 100,000. I don't think its right. The head was like a time bomb that i wasn't aware of. Still owe for two years on it. And when i got it back from diagnostic work , the ABS light was on and the speedo doesn't work at all. So i took the truck back today and they want to charge $300 to fix, when i know its their fault. the mileage loged on the service paper work is what the truck still registers after driving at least 200 miles today. how can they not be responsible. Oh well , going back tomorrow to work up the chain. Never will i buy another GM vehicle. 
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Replying to: tdb1272 (Feb 11, 2009 5:16 pm) 
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Replying to: dmathews3 (Feb 12, 2009 3:49 am)
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Replying to: leadfoot4 (Jan 29, 2009 4:08 am) truck has 54,000 miles
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