Duramax Diesels Forum Truck of the Week
  #16  
Old 02-08-2018, 05:17 AM
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Have the Acadia on the ground but still on the loft and unbolt the cradle then lift the body off it.
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  #17  
Old 02-08-2018, 06:00 AM
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Dang it I bought my wife a traverse with the 3.6....
Thankfully she puts like 5k miles a year so I got some time before I take on that challenge
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  #18  
Old 02-08-2018, 07:31 AM
036.6turbo 036.6turbo is offline
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Quote:
Originally Posted by Tyler_LBZ View Post
The way I've seen it done most for replacing the timing chains is dropping the engine with the sub-frame.



The 07-10 Acadia's (Lamda platform) had the majority of the issues, the timing chain problem was fixed by GM after 2010. We have a 2012 Denali and it has been great for our family. Only thing we have replaced was the alternator and battery.
This "high feature" or VVT 3.6 is in all kind of vehicles, Camaro, CTS, SRX, Enclave, Traverse etc etc. All the early ones had issues. Not just the Acadia.
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  #19  
Old 02-08-2018, 07:33 AM
036.6turbo 036.6turbo is offline
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Quote:
Originally Posted by TheBac View Post
Do you have a way to lift the body off the cradle? Yeah, I know, not easy either....
Not really, no good way.
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  #20  
Old 02-08-2018, 08:55 AM
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Buddy of mine did his Camaro with 2 floor jacks. You having a lift wouldnít be that bad. Strap it to the lift and raise to where it just starts taking pressure off. Unbolt the cradle or k member or whatever itís called. If thatís what yíall are talking about. And then lift the body up off it.
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  #21  
Old 02-08-2018, 09:09 AM
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pics of said lift please? has to be an interesting lift if you cant get the cradle out with it.
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  #22  
Old 02-08-2018, 09:36 AM
036.6turbo 036.6turbo is offline
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Originally Posted by Chevy1925 View Post
pics of said lift please? has to be an interesting lift if you cant get the cradle out with it.
The only pic I have of my lift, with my 03 LB7_Z packed backwards on it.
Attached Images
File Type: jpg IMG_7435.jpg (140.8 KB, 54 views)
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  #23  
Old 02-08-2018, 09:49 AM
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ah ok, so basically like a 4 post.

on flat ground, id get a couple harbor frieght wheel casters, take tires off the front end, lower rotors onto casters, two jacks under the frame/body not on the sub frame, then disconnect everything and have someone on the opposite side of you jack the body up with you till you can roll the sub frame out. may need a couple 8x8 blocks of wood on the jacks to get high enough or pull the bumper/valence. i think you would be aggravation a head going this route but ive not played with one of these rigs before. dont think it will be fun either way...
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Mike L is my role model. I want to be like him when I grow up.
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
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  #24  
Old 02-08-2018, 10:02 AM
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Ah I see the issue now. Well one way Iíve seen it done is put 2 jacks behind the front tires and make sure they can lift HIGH. take the pressure off and drop the cradle then jack the body up and roll the cradle out. Kinda what James said?
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  #25  
Old 02-08-2018, 11:33 AM
036.6turbo 036.6turbo is offline
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Quote:
Originally Posted by Chevy1925 View Post
ah ok, so basically like a 4 post.

on flat ground, id get a couple harbor frieght wheel casters, take tires off the front end, lower rotors onto casters, two jacks under the frame/body not on the sub frame, then disconnect everything and have someone on the opposite side of you jack the body up with you till you can roll the sub frame out. may need a couple 8x8 blocks of wood on the jacks to get high enough or pull the bumper/valence. i think you would be aggravation a head going this route but ive not played with one of these rigs before. dont think it will be fun either way...
Quote:
Originally Posted by zakkb787 View Post
Ah I see the issue now. Well one way Iíve seen it done is put 2 jacks behind the front tires and make sure they can lift HIGH. take the pressure off and drop the cradle then jack the body up and roll the cradle out. Kinda what James said?
Thanks guys, pretty sure this is going to be a shit show, no matter which way I attack it.
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  #26  
Old 02-08-2018, 04:32 PM
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Quote:
Originally Posted by Tyler_LBZ View Post
The 07-10 Acadia's (Lamda platform) had the majority of the issues, the timing chain problem was fixed by GM after 2010.
Are you sure of this? Is there literature from GM or something I can read about.
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  #27  
Old 02-08-2018, 05:47 PM
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Quote:
Originally Posted by 036.6turbo View Post
This "high feature" or VVT 3.6 is in all kind of vehicles, Camaro, CTS, SRX, Enclave, Traverse etc etc. All the early ones had issues. Not just the Acadia.
Correct that engine is in those cars as well, it is very widely used, the Lamda platform are all the mid size SUV's that GM makes.
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  #28  
Old 02-08-2018, 06:04 PM
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Quote:
Originally Posted by ikeG View Post
Are you sure of this? Is there literature from GM or something I can read about.
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.
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  #29  
Old 02-08-2018, 06:08 PM
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Quote:
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.
Sounds like the issues with earlier ecoboost engines.
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  #30  
Old 02-08-2018, 07:22 PM
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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.

Dealers are to replace the timing chain. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after February 17, 2012, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to February 17, 2012, must be submitted to the Service Contract provider.

Vehicles Involved
Involved are certain 2007 model year Cadillac CTS, SRX, STS; GMC Acadia; and Saturn OUTLOOK vehicles equipped with a 2.8L/3.6L V6 engine (LP1/LY7).

Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Applicable Warranties section in the Global Warranty Management System.

Parts Information
Parts required to complete this special coverage are to be obtained from General Motors Customer Care and Aftersales (GMCC&A).

Service Procedure
Verify that the timing chain requires replacement. Refer to the appropriate diagnostic information in SI.

• If the timing chain does NOT require replacement, no further action is required. Inform the customer that any additional diagnosis and repairs are not covered under this special coverage.
• If the timing chain requires replacement, refer to the appropriate timing chain replacement procedure in SI.
Courtesy Transportation – For US and Canada
The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program is very important in maintaining customer satisfaction. Dealers are to ensure that these customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. Dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.

Warranty Transaction Information
Submit a transaction using the table below.


Labor Code
Description
Labor Time
Net Item
T5853


Diagnostic Time Only – No Repair Required
0.1-0.3

N/A


T5854
Replace Timing Chain

— CTS, STS, SRX
6.9

— Acadia, OUTLOOK (FWD) (inc front wheel alignment)
9.1

— Acadia, OUTLOOK (AWD) (inc front alignment)
9.4

Add: Diagnostic Time
0.1-0.3


* The amount identified in “Net Item” should represent the actual sum total of the current GMCC&A dealer net price for the RTV sealant and refrigerant needed to perform the required repairs, not to exceed $9.64 USD, $17.20 CAD, plus applicable Mark-Up or Landed Cost (for Export).

Customer Notification
General Motors will notify customers of this special coverage on their vehicles (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).


Dear General Motors Customer:

As the owner of a 2007 model year Cadillac CTS, SRX, STS; GMC Acadia; or Saturn OUTLOOK vehicle, your satisfaction with our product is very important to us.

Recently, you took your vehicle to your dealer to have Customer Satisfaction Program 10287 performed. Your dealer reprogrammed the engine control module to prevent premature wear of the timing chain and the illumination of the Service Engine Soon light. Further analysis has shown that the reprogramming may not fully correct this condition for all vehicles; we, therefore, are providing you with additional protection for the timing chain.

What We Have Done: General Motors is providing owners with additional protection for the timing chain. If premature wear of the timing chain occurs on your 2007 model year Cadillac CTS, SRX, STS; GMC Acadia; or Saturn OUTLOOK vehicle, equipped with a V6 engine, within 10 years of the date your vehicle was originally placed in service or 120,000 miles (193,000 km), whichever occurs first, the condition will be repaired for you at no charge. Diagnosis or repair for conditions other than the condition described above is not covered under this special coverage program.

Do not take your vehicle to your GM dealer as a result of this letter unless you believe that the Service Soon Engine light has illuminated due to timing chain wear.

What You Should Do: If you believe that your vehicle's Service Engine Soon light has illuminated due to timing chain wear, repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to contact your GM dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.

Reimbursement: If you have paid for repairs for the condition described in this letter, please complete the enclosed form and present it to your dealer with all required documents. Working with your dealer will expedite your request, however, if this is not convenient, you may mail the completed form and all required documents to Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and required documents must be presented to your dealer or received by the Reimbursement Department by July 31, 2013, unless state law specifies a longer reimbursement period.


Also, there's something about a "Customer Satisfaction Program #10287", not sure what thats all about.
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