I've heard they burn out as well, I was more or less going to switch out everything on these now so I dont have to ever go back and fix it.
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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Regency
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Regency
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Not sure. Was going to have my shop put it on
I'm in Cali and my Denali was always 180-205 (not towing) after I added the true-cool and a B&M deep pan it runs around 130-135, I was looking at this chart and figured i'm pretty good to go now.
the_tool_man
Full Access Member
Right up the road from me in Duncan, SC. Small world.
shreksbrother
Full Access Member
It sure is. I'm actually in Greer off highway 101 (so just an exit away!).
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Derick
Full Access Member
Took the burb to one of the trusted motor rebuild shops around here. The owner thinks its the main bearing. So, with them, options are 42-4500 to rebuild, or 6200 for a re-manufactured motor. 
Going to stop by my mechanic and see how much he would charge to put in a new motor that I would have delivered. Found an LY6 on lowmileageparts.com for 3k. They have a decent warranty, but outside of that I'm not sure of their rep. If I choose to go that route, I'll just drive it till either it blows, or until the motor comes in stock.
Going to stop by my mechanic and see how much he would charge to put in a new motor that I would have delivered. Found an LY6 on lowmileageparts.com for 3k. They have a decent warranty, but outside of that I'm not sure of their rep. If I choose to go that route, I'll just drive it till either it blows, or until the motor comes in stock.
https://www.facebook.com/marketplace/item/268029760556786/Took the burb to one of the trusted motor rebuild shops around here. The owner thinks its the main bearing. So, with them, options are 42-4500 to rebuild, or 6200 for a re-manufactured motor.
Going to stop by my mechanic and see how much he would charge to put in a new motor that I would have delivered. Found an LY6 on lowmileageparts.com for 3k. They have a decent warranty, but outside of that I'm not sure of their rep. If I choose to go that route, I'll just drive it till either it blows, or until the motor comes in stock.
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Derick
Full Access Member
Thanks, but mine is 3/4 ton, so I've got the iron block 6.0, with no AFM. That said, I thought trailblazers only sported the I6 vortec 4200.......TB with a v8 has some balls I bet!
randeez
Full Access Member
drove it, and broke it.
started running rough while out running some errands. made it over to my buddys shop was smoking pretty bad out the tail pipe, lots of fuel smell. no check engine light but cyl #3 colder than the rest so we started there. pulled the plug checked spark, turned it over without the plug and whole bunch of full came out of the hole, injector seems to be stuck wide open couldnt find one local so wont be here till tomorow. scoped the cylinder doesnt look all that great but going to swap injector and see what happens.
had set up to get realigned and rear pinion seal swapped tomorrow dunno if im going to have to put that off now
started running rough while out running some errands. made it over to my buddys shop was smoking pretty bad out the tail pipe, lots of fuel smell. no check engine light but cyl #3 colder than the rest so we started there. pulled the plug checked spark, turned it over without the plug and whole bunch of full came out of the hole, injector seems to be stuck wide open couldnt find one local so wont be here till tomorow. scoped the cylinder doesnt look all that great but going to swap injector and see what happens.
had set up to get realigned and rear pinion seal swapped tomorrow dunno if im going to have to put that off now
09 L9H
not a boomer
Lol I work in Duncan
Tonyrodz
Resident Resident
This is what you need.Took the burb to one of the trusted motor rebuild shops around here. The owner thinks its the main bearing. So, with them, options are 42-4500 to rebuild, or 6200 for a re-manufactured motor.
Going to stop by my mechanic and see how much he would charge to put in a new motor that I would have delivered. Found an LY6 on lowmileageparts.com for 3k. They have a decent warranty, but outside of that I'm not sure of their rep. If I choose to go that route, I'll just drive it till either it blows, or until the motor comes in stock.
https://www.lowmileageparts.com/200...-2500-PICKUP-Engine-P315362.aspx#.XCVuQclOm7M
Derick
Full Access Member
You're goddamn right I do. I asked my mechanic about retro fitting an 8.1 into it awhile back...he said it probably wasnt a good idea. Not to mention the stuff from that site is bare bones...I'm sure I'd need all the computers too...
BourbonNcigars
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Drove around in a rain storm, trying to locate the source of water in my driver's side floorboard. I've scoured the webz (seems a common problem) and still can't find where it's leaking. Damn it.
Derick
Full Access Member
You got an XM sharkfin antenna?
kbuskill
***CAUTION*** I do my own stunts!
This guy spells it all out pretty good.
https://grassrootsmotorsports.com/f...g-block-gmt900-frankenburban-20/130992/page1/
It basically bolts right into the 3/4 ton GMT900 because they use the exact same chassis as the GMT800.
BourbonNcigars
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Nope. My hole lies elsewhere.
