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Chevy Colorado and GMC Canyon Fuel System

16 messages,  Last post on Nov 06, 2009 at 9:48 AM

You are in the Chevrolet Colorado and GMC Canyon Forum. Your Host is kcram

What is this discussion about? Chevrolet Colorado, GMC Canyon, Fuel System, Truck

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#14 of 16 Re: Check engine, Fuel cap [plutac] by kcram HOST May 06, 2009 (6:05 pm)
Replying to: plutac (May 06, 2009 10:16 am) Since changing caps isn't doing the job, you probably need to have your tank vent checked.   kcram - Pickups/Wagons Host
#15 of 16 screwy defective fuel gauge by chrisusvi Oct 06, 2009 (12:50 pm)
I bought a pre-owned '05 Canyon 2 months ago and I had noticed the engine light was on. I brought it to the shop and they plugged the car into that computer module that reads all the problems with the car. The problem was with the fuel gauge and the sensor in the fuel tank. When the truck was sitting still, the pin on the fuel gauge would slowly go up and down. Never giving a true fuel reading. I was driving a hill one day and the truck started to cough and buck. It then stalled. The fuel gauge read a 1/4 of a tank of gas. To make a long story short...they put in a new fuel sensor inside the tank. All new parts the mechanic said. $275 worth. I was driving up another hill and what do you know, the truck coughs, bucks and stalls. No gas at 1/4 of a tank again. No 'low fuel' warning light....nothing. From a full tank I waited for it to get to 1/2 and filled it up. At 1/2 of a tank it took 15 gallons. The size of the tank is 19.8 gallons. The mechanic doesn't know what to do now. This happen to anyone? Any suggestions what the problem is?
#16 of 16 Re: Gas tank overflows when filling [mikeof48] by txspider Nov 06, 2009 (9:48 am)
Replying to: mikeof48 (Feb 06, 2009 2:24 pm) yes, mine is doing this as well ('05 canyon w/">91K miles). I bought a new solenoid ($105 w/shipping) from gmpartsdirect.com. Just installed it and haven't confirmed it works yet. Here's the issue: the ventilation of the tanks is the problem. A month ago, got the gas cap code (engine light). Replaced the gas cap, no change. The tank never pressurizes and gas always sprays out when the pump shuts off. The vent is apparently open when driving, and closed when pumping (thus no release of pressure as the tank fills up). I'm hoping it's a bad solenoid on the vapor canister, but I'm shooting in the dark a bit. There's another part (purge valve) that I may have to try and it's $18 before shipping. Hope this helps. Appears this will occur on every canyon/colorado when they hit the 100K mark.

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