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 > GM buying back 6.6L Duramax

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BenK

SF BayArea

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Posted: 04/16/22 11:41pm Link  |  Quote  |  Print  |  Notify Moderator

Anyone know why GM is buying back late model 6.6L Duramax's ?


-Ben Picture of my rig
1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...

bucky

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Posted: 04/17/22 04:19am Link  |  Quote  |  Print  |  Notify Moderator

Duramax buy back clicky


2005 Cummins 3500 2WD LB quad cab dually pulling a 2014 Blue Ridge 3025RL


Tvov

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Posted: 04/17/22 05:42am Link  |  Quote  |  Print  |  Notify Moderator

I didn't see in that link what the actual problem(s) is with the motor.


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Sjm9911

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Posted: 04/17/22 06:27am Link  |  Quote  |  Print  |  Notify Moderator

Wow, if they are buying them back that probably means no fix to the problem. Not good.


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Lwiddis

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Posted: 04/17/22 07:26am Link  |  Quote  |  Print  |  Notify Moderator

No fix and no new trucks on a GM lot to buy as a replacement.


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FishOnOne

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Posted: 04/17/22 07:44am Link  |  Quote  |  Print  |  Notify Moderator

I don't understand why GM doesn't simply replace the motor.


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FlatBroke

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Posted: 04/17/22 08:39am Link  |  Quote  |  Print  |  Notify Moderator

Mine is 20 years old I’ll take a do over, please. [emoticon]



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Grit dog

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Posted: 04/17/22 08:43am Link  |  Quote  |  Print  |  Notify Moderator

Sounds like just new trucks. So considering no significant changes to that engine since 2017, must be a quality issue and not an inherent defect. Hopefully limiting the quantity of buybacks.
Hood this doesn’t put a damper on the 500hp+ version promised.


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Second Chance

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Posted: 04/17/22 08:49am Link  |  Quote  |  Print  |  Notify Moderator

The only thing I can find was on a Duramax forum in comments on a thread. According to that, it seems to be a "heat treatment issue with the block that causes warping and hydrolock"

Rob


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ksss

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Posted: 04/17/22 09:47am Link  |  Quote  |  Print  |  Notify Moderator

Second Chance wrote:

The only thing I can find was on a Duramax forum in comments on a thread. According to that, it seems to be a "heat treatment issue with the block that causes warping and hydrolock"

Rob



Thats what I found as well.


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