How Long Do These Engines Last? - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #1  
Old 01-20-2010, 11:30 AM
kflo kflo is offline
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2003 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 4X4
Join Date: Nov 2007
Location: Orange County, NY
Posts: 19
How Long Do These Engines Last?

I have a 2003 Trailblazer and love it. I have been on this forum a few times. Outside of a few minor things and regular wear and tear this thing has been rock solid. Best car I have owned so far. I still owe about 33 payments on it and have 130k on it at this time. I want to keep it for another 4 to 5 years but I am concerned it may not last this long. How much do you think I wil lgt out of it I do change the oil every 3 to 5k and I dont run her too hard.

I would love to get another one after a year or 2 after I pay this one off or once it kicks the bucket. I get around 18 mpg and that wont cut it. Would love to get another Trailblazer if the newer ones are made as good and get over 20 mpg.

Thoughts?
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  #2  
Old 01-20-2010, 04:08 PM
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rbarrios rbarrios is offline
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2003 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 2WD
Join Date: Sep 2004
Location: west covina
Posts: 5,267
152,xxx here.
and I do 11,500 miles oil changes on dino oil.

no issues with alternators or PS pump etc.
I think if something goes wrong it will be the tranny or water pump--- but not the engine.
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  #3  
Old 01-20-2010, 04:16 PM
newticus newticus is offline
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2002 SAAB 9-7x
Black 6.0L LS2 V8 2WD
Join Date: Oct 2009
Location: BF Egypt
Posts: 143
I'm on my second TB. Only got rid of the previous one (2002 TB with 128k miles on it) due to an antifreeze smell that the dealer couldn't find the cause for. Wife wouldn't ride in it anymore.

Since it was our long distance traveling car I just opted to get into another one. Never had any real problems with the first one and I plan on driving this one until the wheels fall off.
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  #4  
Old 01-20-2010, 04:25 PM
DJones DJones is offline
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2003 Chevy TrailBlazer LTZ
Summit White 4.2L I6 4X4
Join Date: Oct 2009
Location: Where?
Posts: 940
I plan on driving mine until the wheels fall off. The only major problem that I had was the water pump, 10,000 miles ago. Keep up with regular maintenance and I will expect 300,000 or more. At 112,020 now.
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  #5  
Old 01-21-2010, 08:59 PM
ScarabEpic22 ScarabEpic22 is offline
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not here not here not here
not here Other AWD
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114,9xx on my 02. Replaced the power steering pump because I sheared the input shaft off it due to doughnuts (dumb 16yr old me), regular maintenance is it besides my performance mods. It will stay in the family until either the parents sell it or I can buy it from them.

My SS will stick with me for years to come, I will drive the wheels off it.
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  #6  
Old 01-22-2010, 04:55 AM
Macatowa Macatowa is offline
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2003 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 4X4
Join Date: Sep 2007
Location: Holland, MI
Posts: 107
I'm at 172,000 miles and it runs as good as it did with 25,000 miles. I have yet to replace my original water pump, alternator, PS pump, A/C compressor, transmission. This is what we all want, dependable and durable safe transportation and utility. I love V-8's and own two very nice cars with them but i would not want to trade my I-6. This is the smoothest and best balanced inline six ever made and should last several 100,000 miles with good care and maintenance. As far as oil goes I am running Mobil 1 5w-30, it start smoother in the cold climate i live in.
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  #7  
Old 01-22-2010, 10:21 AM
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Robert1101 Robert1101 is offline
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2003 Chevy TrailBlazer LS
Majestic Red Metallic 4.2L I6 4X4
Join Date: Jan 2008
Location: Raeford, NC
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Quote:
Originally Posted by kflo View Post
I do change the oil every 3 to 5k and I dont run her too hard.
Thoughts?
What about both the differentials, transfer case, transmission, coolant, brake fluid, splined disconnect, etc? There is more than just changing the oil if you wish to keep it for a long time. Someone on this board has 230,000 miles or so on the clock.
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Earth first, we will strip mine the other planets later 3.73's, G80, 4X4, PCMforLess, Flowmaster 70, K&N 57
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  #8  
Old 01-22-2010, 10:38 AM
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markarock markarock is offline
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2006 Chevy TrailBlazer LT
Red Jewel Tintcoat 5.3L V8 4X4
Join Date: Jul 2008
Location: Columbia Station, OH
Posts: 718


You should be able to get 400k out of the motor without any problems. That said, any motor can blow at any time. But the odds are it will last and last and last--outlasting the rest of the truck.

But stop throwing your money away on excessive oil and filter changes. Every 10,000 miles is fine for most everyone with an I6 (my 5.3 goes 9k with the kind of driving it sees), unless you are experiencing severe duty conditions.

Basic maintenance is critical to any vehicle, and these trucks are no exception. If you take care of your truck, it will take care of you.
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  #9  
Old 01-22-2010, 10:56 AM
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bravada87 bravada87 is offline
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2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Jan 2010
Location: caseyville, Ill
Posts: 3
I have a 02 olds bravada with 160,000 and havent changed anything but my belt and plugs......only major problems i've had was my front differential locked up on me while i was driving down the highway.
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  #10  
Old 01-22-2010, 04:50 PM
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glfredrick glfredrick is offline
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2003 Chevy TrailBlazer LS
Black 4.2L I6 4X4
Join Date: Dec 2005
Location: Louisville, KY
Posts: 1,236
I'm running Amsoil synthetic in mine, and if typical, I'll see WAY over 300K miles before it even starts to use oil.

I'm at 100K now and it runs great. I have replaced the transmission, rear axle bearings and seals, brakes and rotors, front unit-bearing hubs, rear u-joints, spark plugs, t-stat, and did a PCM for Less tune, True Flow CAI, and a resonater delete. Not bad in my estimation, considering that some of those miles were towing an 8000# off-road vehicle/car-hauler trailer load across country (reason for my transmission and rear axle issues).
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