Chevrolet Colorado & GMC Canyon Forum banner

21 - 26 of 26 Posts

·
Registered
Joined
·
2,307 Posts
2012 z71 4x4 crew cab 3.7 I5 auto tranny , 66K miles, not a single repair needed. oil, filters and tires. Still running on original brake pads !
 

·
CALI BOSS
Joined
·
6,288 Posts
2005 crew cab Xtreme 3.5L made it to 260,222 miles before being totaled by a dodge ram. Engine, trans and G80 rear all intact and original. Used the truck as a daily work truck hauling 700+ lbs in the bed at all times. Also ran with heavy 20" wheels/tires. Never babied it, drove it hard. It burned a quart of oil every 5000 miles. Did full synthetic oil change and filter every 10k miles. Then did filter and top-off every 5k miles.
340884
 

·
Registered
Joined
·
2 Posts
140k miles and running better after changing the sparkplugs. From the air filter box to the throttle body, that big black box on top of the valve cover seems to have a tiny trace of oil. But, it was clean otherwise. It idles just about 550-600 RPM, from what that tachometer needle shows on the dash. That seems kind of low to me, from all vehicles I have ever owned. I did change the oil with full synthetic Castrol for high mileage vehicles. I had Jiffy Lube do a coolant replacement. I wouldn't recommend that. Whatever they did do, over pressurize the system or put the wrong type of coolant, caused the radiator to leak along the top tank seam. I replaced that with a new radiator and cap. This also helped me learn that the radiator shroud being able to come apart in three pieces, held together with special little clips, which I ended up losing one. No big deal, I was able to use a zip-tie to keep it together on the one missing clip.
 

·
Registered
2012 GMC Canyon
Joined
·
4 Posts
2012 Canyon, 151k miles, runs perfect. No leaks, no major repairs. I recently purchased this vehicle and saw good service records from prior owner, all done at GM service department.
 

·
Registered
Joined
·
149 Posts
140k miles and running better after changing the sparkplugs. From the air filter box to the throttle body, that big black box on top of the valve cover seems to have a tiny trace of oil. But, it was clean otherwise. It idles just about 550-600 RPM, from what that tachometer needle shows on the dash. That seems kind of low to me, from all vehicles I have ever owned. I did change the oil with full synthetic Castrol for high mileage vehicles. I had Jiffy Lube do a coolant replacement. I wouldn't recommend that. Whatever they did do, over pressurize the system or put the wrong type of coolant, caused the radiator to leak along the top tank seam. I replaced that with a new radiator and cap. This also helped me learn that the radiator shroud being able to come apart in three pieces, held together with special little clips, which I ended up losing one. No big deal, I was able to use a zip-tie to keep it together on the one missing clip.
The big black box on top you mentioned, the one you must remove to change spark plugs, it has a black rubber "Vent Hose" that comes off with it from the back side. It is about 4" long with bends on each end. Over time, with oil fumes passing thru it, it gets soft and may not plug in well at each end or can even develop a fold or hole in it. It needs to be somewhat rigid in order to fit on nipples at each end, as you can't guide it on by hand. Mine had developed a fold/hole in it, and felt mushy. I ordered one from Auto Zone, they list it as "Vent Hose", and had it the next day. Cost about $8. Small amount of oil fume had collected on the black box that lead me to investigate. When box was off I cleaned it and it is fixed. Idle is also much smoother. Sounds like your issue.
BTW - the hose has those bends in it, no way to take a straight piece of hose and improvise.
The replacement hose I purchased was a Doorman product.
In normal day to day operation, with a good hose, properly installed it should last and last. But when it gets old and soft and you remove it for spark plug changes, it might not do right upon the install.
Here is the AC Delco version of said hose:
Colorado Vent Hose
 

·
Registered
Joined
·
2 Posts
2008 GMC Canyon 4x4 Ext Cab 3.7 I5. 167k miles. New water pump and thermostat at about 130k. Regular maintenance otherwise. I bought new in May 2008 and I would drive it anywhere. Best vehicle I have ever owned.
 
21 - 26 of 26 Posts
Top