175,000, 2005 LS Z71 4x4, no major repairs.

 

'04 3.5 4x4 z85 230,000 miles, no major repairs and still running strong! No codes! No leaks! Great truck! I do have to add a quart of oil between oil changes, I use full synthetic and change oil about every 5,000 to 7,000 miles. Very impressed with this goofy little 5 cylinder motor!

 

211k 2006, no major repairs either. Same for oil as oldguy.

 

2005 cc z85 369k no major repairs other than the head being replaced under warranty at 89k. Synthetic oil every 5k no oil between changes. Best vehicle I have ever owned. I also own a 16 4x4 colorado duramax with 105k.

 

256k on a 2008 LT.

Bought used with 141k 5 years ago. Oil and filter when light tells me to. Full synthetic w/ quality filter. Burn a couple quarts between changes. 1 and 3 cylinders are low in compression, but the other 3 make up for it. Just got a tune for this rig and the bitch runs kickass. I'd drive it anywhere!

No major repairs. Rear main seal, water pump, couple sensors is all in 5 years.

 

Only 69thousand on mine. It's an 04 crewcab. Reading this is really promising. Bought the truck from my parents. Always loved the truck.

 

2005 Colorado i5. I have 67K on it (don't drive much anymore). Been using synthetic oil since I got her in 2012 - Mobile 1 at first and now Valvoline. Doesn't use a drop of oil. Never had any engine issues except for the common rattle on start-up. Love this truck.

 

Good to know, I bought an 05 last year, with 100k on it. Seems to run good. I did change the oil to full synthetic oil & a wix filter.

 

2005 with 300,386 miles. No major problems, but on my third transmission.

 

04 z71 with 191k on it. Fuel trims are a bit off, and it rattles on startup. I suspect it needs a new cat. Also, she does burn oil. I have a head sitting here that I need to send out for a valve job. Just haven't gotten around to it quite yet.I did have to have the entire cooling system redone last year. Water pump/thermostat were both bad. Radiator supposedly had a small leak, but I've not seen any evidence of that, and it's still holding coolant just fine.

My last tank of gas, I averaged 19.7 MPG.

 

110,000 miles 2005 Z85 3.5 L. Head rebuild at 95k intake cam and several rockers at the same time, other wise just normal maintenance, dio oil at 5 to 6 k good oil filters. Since the head job I developed a cam speed tick at full temp, at idle and 6 exhaust lifters replace but that did not solve it. Replaced Cam solenoid, and both O2 sensors as maintenance.

 

Is there any common issues on this motor I have an 04 and heard there was an issue but they later resolved it on the 3.7?

 

The valve guides in the head have a tendency to go out, and require a valve job to repair them.

 

2005 I5, ordered new, 260,000 miles and I put everyone of 'em on it. No major problems. Change oil and filter when "Oil Life" comes on with High Mile Mobil 1 Syn. 5w30 and AC PF61 filter. Replaced water pump and radiator at 200,000 miles and still rollin'.
Recently had oil pressure switch go bad, watched You Tube video of some bozo talkin' chit saying removal of RF Tire and fender well liner required to change it. BS. Looked under the hood, over the oil filter, there it was, removed with a small crescent, replaced, easy peasey. Can't rely on some people, need to look for yourself.
Great motor for general gettin' around, sure you could rough it up and tear it to hell if you wanted to, I prefer to take reasonable care of it and just ride.

 

187K no problems it runs great burns no oil !

 

217,000 and just parked my 2004 Z71 4x2 to put it to pasture. Transmission when out around 90k and has been fine since. Truck has a knock now and no power and I’m not a mechanic so moving on.

 

Have a 2008 Ext Cab I-5 Z71 4x2, 244K miles. Purchased new & still loving it. No major problems. Had to replace transmission at 242K. Change the oil every 3-4K. Plan to keep.

Had a 1990 S-10 V6 for 18 years and 430K. I try to take care of things I have.

 

I got a 2008 3.7 in August 2019 with 71,500 miles. Now its at 83,400 and no issues. Had a check engine light here for a week but could have been shitty 85 octane tanks of gas when I passed through Wyoming a couple weeks ago. Never skipped a beat. does rattle on startup tho, but I guess thats normal.

 

2006 Crew Cab I5 3.5L with 184K no major problems... Does not burn any oil..... just switched to Mobil 1 full syn with Wix filter.
Last time I checked 17.5 city 18.8 hwy

Sent from my SM-G950U1 using Tapatalk

 

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 !

 

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.

 

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

 

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.

 

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.

 

I just blew my 3.5 I5 up with a mere 312000 miles. It was in a 2008 Chevy Colorado LT. So sad. Now I'm debating replacing the engine, or the truck.

 

I got 101k on my 06 before it blew, seeing these is making me just wanna toss it back in tbh, I was gonna toss a diesel or a K20 in it but yall are making me want to get another in it, sounded great and performs well but it just had problems especially for me