Duramax Diesels Forum Truck of the Week
  #31  
Old 02-09-2018, 04:39 AM
036.6turbo 036.6turbo is offline
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Originally Posted by TheBac View Post
Have you seen this?

#11340C: Special Coverage Adjustment-Timing Chain Wear - (Feb 16, 2012)

Subject: 11340C – Special Coverage Adjustment — Timing Chain Wear

Models: 2009 Buick Enclave
2007-2009 Cadillac CTS, SRX, STS
2009 Chevrolet Traverse
2007 GMC Acadia
2009 GMC Acadia
2007 Saturn OUTLOOK
2009 Saturn OUTLOOK
Equipped with 2.8L/3.6L Engine (LP1/LY7/LLT)

Condition
On some 2007 model year Cadillac CTS, SRX, STS; GMC Acadia; and Saturn OUTLOOK vehicles that are equipped with a 2.8L/3.6L V6 engine (LP1/LY7), under certain driving conditions, and with the vehicle’s original oil change intervals, the timing chain could wear prematurely and cause the illumination of the Service Engine Soon light.

Special Coverage Adjustment
This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.
Yes Tom, I've seen it.

That's why I got a smile out of the comments about bashing the Acadia, this 3.6 motor is the new small block chevy of GM, they put this thing in everything. There may be more 5.3s out there (just because of the number of 1/2 ton trucks, Tahoes, Burbs, etc etc) But there are a BUNCH of 3.6s and they ALL suffer from this.

My daughter's car has had the chains replaced once already under that coverage, it had like 40k miles on it then. My wife's 2008 SRX had the chains replaced under that program as well.

But here we are today, daughter's car has 165,000 miles on it now, so like 125,000 on the chains. P0008 and P0017 codes showing up. She's outside of the GM coverage, so we all know that means???

You guessed it! She falls under the "Dad" coverage. (single mother, hard worker and I kind of like her a little bit )

Think LB7 injectors, boys and girls! If your in the window of the coverage, maybe GM will repair it, or if they do replace the item and you put a lot of miles on it, at some point the repair will be on you.

But I digress, I got to thinking.

The ceiling of my shop, right above the lift is braced, from back in the day. Before I got the lift I hung a chain fall there for pulling motors.

I may raise the car, cut the "K" member loose, suspend the front of the car from the old chain fall point, then lower the lift with the "k" member and the rear of the car on it?

Seems legit, right? What could possibly go wrong??

:dontkn ow:
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  #32  
Old 02-09-2018, 05:26 AM
036.6turbo 036.6turbo is offline
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Originally Posted by Tyler_LBZ View Post
I have not received any from GM but everything I have read shows that GM offered an extended warranty 10yr/120K on the older models (engine code LY7) and in 2010 made changes to the timing chain assembly among other changes, engine code "LLT". Speculation is they went with a different chain manufacturer and revised how the chain gets lubrication. The causes of the chain failure are hard to pinpoint, but GM wasn't the only company with similar timing chain issues. Reduced oil change intervals by reprogramming the oil life monitor were common "fixes". Assuming it was lack of lubrication causing them to stretch.
That and the fact that the chains have "actuators" that hold tension on the chains, based on oil pressure.

This platform also had an issue with oil consumption, due do a poorly designed PCV system. They would actually draw oil into the intake track and burn it. This would leave the engine low on oil, low oil = low / interrupted oil pressure. Timing chain tension actuators don't see enough oil pressure, bad things start to happen.

So GMs answer? Reprogram the ECM to tell you to change the oil more frequently, not that the oil has magically gone bad SOONER, but just to make sure its always at an acceptable level.

All this stuff is well documented on the fifth gen Camaro forums.

Remember, this same engine in an "F" body is rated at 306hp. The guys that hot rod the v6 Camaros altered the PCV system. Building special catch cans, etc etc etc.

Once again I digress.
__________________
2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison, under construction.
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  #33  
Old 02-09-2018, 06:11 PM
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TheBac TheBac is offline
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Quote:
Originally Posted by 036.6turbo View Post
Yes Tom, I've seen it.

That's why I got a smile out of the comments about bashing the Acadia, this 3.6 motor is the new small block chevy of GM, they put this thing in everything. There may be more 5.3s out there (just because of the number of 1/2 ton trucks, Tahoes, Burbs, etc etc) But there are a BUNCH of 3.6s and they ALL suffer from this.

My daughter's car has had the chains replaced once already under that coverage, it had like 40k miles on it then. My wife's 2008 SRX had the chains replaced under that program as well.

But here we are today, daughter's car has 165,000 miles on it now, so like 125,000 on the chains. P0008 and P0017 codes showing up. She's outside of the GM coverage, so we all know that means???

You guessed it! She falls under the "Dad" coverage. (single mother, hard worker and I kind of like her a little bit )

Think LB7 injectors, boys and girls! If your in the window of the coverage, maybe GM will repair it, or if they do replace the item and you put a lot of miles on it, at some point the repair will be on you.

But I digress, I got to thinking.

The ceiling of my shop, right above the lift is braced, from back in the day. Before I got the lift I hung a chain fall there for pulling motors.

I may raise the car, cut the "K" member loose, suspend the front of the car from the old chain fall point, then lower the lift with the "k" member and the rear of the car on it?

Seems legit, right? What could possibly go wrong??

:dontkn ow:
I figured you may have.

So you're the family mechanic too, eh? Ive got fuel filler/evap problems on a G6 to solve, and when I can get to it, intake and oil pan gasket (and pan) on a Grand Prix. Yay!

Honestly, your lift idea sounds like it might work.
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  #34  
Old 02-11-2018, 07:37 PM
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Chevy1925 Chevy1925 is offline
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I second the lift idea. I would do it!
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #35  
Old 02-12-2018, 04:20 AM
036.6turbo 036.6turbo is offline
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Originally Posted by TheBac View Post
I figured you may have.

So you're the family mechanic too, eh? Ive got fuel filler/evap problems on a G6 to solve, and when I can get to it, intake and oil pan gasket (and pan) on a Grand Prix. Yay!

Honestly, your lift idea sounds like it might work.
There is always a job in "que" waiting to get in.

Then add in being the handyman for (3) adult kids, and the MOVER! (I'm getting too old for this shit!) Beginning to see why my old man moved away when he retired!

Quote:
Originally Posted by Chevy1925 View Post
I second the lift idea. I would do it!
I still have to figure out a way to "crib" the raised front end of the car, so I'm not working under a suspended load.

Option "B" would be to cut an access panel in the passenger side inner fender, so the front of the engine is more accessible.

I've seen guys do that kind of thing to service a fuel pump, rather than drop the tank, just wack a hole in the floor and reach through.
__________________
2003 GMC Sierra CCSB.
LBZ / Six speed / EGR Delete / DSP5 with tuning from Idaho Rob @ ATP Trucks / Bilstein 5100s / Air Ride 5000 bags / Merchant Reman Tcase / TNR head unit.

2015.5 Denali. Dmax Allison, under construction.
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  #36  
Old 02-12-2018, 07:56 AM
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Chevy1925 Chevy1925 is offline
don't know sh!t about IFS

 
Join Date: Oct 2009
Location: Phoenix Az
Posts: 13,737

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Quote:
Originally Posted by 036.6turbo View Post
There is always a job in "que" waiting to get in.

Then add in being the handyman for (3) adult kids, and the MOVER! (I'm getting too old for this shit!) Beginning to see why my old man moved away when he retired!



I still have to figure out a way to "crib" the raised front end of the car, so I'm not working under a suspended load.

Option "B" would be to cut an access panel in the passenger side inner fender, so the front of the engine is more accessible.

I've seen guys do that kind of thing to service a fuel pump, rather than drop the tank, just wack a hole in the floor and reach through.
yup, thats always an option as well.
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James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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