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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.


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Old 12-21-2018, 07:38 PM   #1 (permalink)
dmax3500
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Need regen help; Lowell, Ind.

anybody near,us2 at i65,south of crown point




I just got the dreaded,''12 miles to 4mph,
stopped at a gmc dealer and they couldn't force a regen


codes are #1 def tank heater circuit open,
they want $250 to put in 2 thermostats ,then $800 to put in a DEF tank [that GM warrenty'd,last year]


I think if I can use a ''tech2 scanner'',i could do it and make it to a buddys shop at Rockford,il.,and put in a DEF tank ,if need be




anybody near here?


I got a motel,so if I could fix/clear things sat morning,i could be gone


this should only take 30mins-1 hour

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Last edited by OkDually; 12-23-2018 at 02:30 AM. Reason: prefix/title adj
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Old 12-21-2018, 08:19 PM   #2 (permalink)
OkDually
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dmax3500 I put up an announcement to help draw some attention to your need.
Please keep us updated on your situation



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1996 K3500 6.5L,( "F" Eng #141 cast block) 5 speed manual, crewcab, dually longbed: 208,000mi.
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Old 12-21-2018, 08:41 PM   #3 (permalink)
dmax3500
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thanks
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Old 12-22-2018, 04:38 AM   #4 (permalink)
dmax3500
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I think if I can get into the ''glow plug controller and cycle the reactant heater circuits,i can ''kill'' the limp-mode and at least drive it an other 200-300 miles


so and mac-snapon diagnostic tool might do it too




any thoughts?
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Old 12-22-2018, 09:23 PM   #5 (permalink)
triwestoilfield
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I'm just rolling through the Brickyard.You get operational yet?I do have the Snap On Pocket iQ heavy duty in the truck here.
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PMD Relocation Kit
GPC Override
Helper Airbags added to Suspension
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Old 12-23-2018, 01:33 AM   #6 (permalink)
dmax3500
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I just got to my buddys shop


I need to ck a few things and will post more info in the morning,its beddy-by time now


thanks to everybody
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Old 12-23-2018, 02:27 AM   #7 (permalink)
OkDually
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Quote:
Originally Posted by dmax3500 View Post
I just got to my buddys shop


I need to ck a few things and will post more info in the morning,its beddy-by time now


thanks to everybody
Glad you made it and thanks for giving us an update.
I moved your post over to the LML section for continued follow-up.

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1996 K3500 6.5L,( "F" Eng #141 cast block) 5 speed manual, crewcab, dually longbed: 208,000mi.
Diamond Eye 4" Turbo Back Exhaust w/2.5" Flo-Pro Crossover
AirDog II DF165 w/ tank sock delete - XDP
TD-Max boost controller - Kennedy Diesel
OPS extension hose - Leroy Diesel
Glow Plug Harness- PT Wiring Solutions
Glowshift Maxtow EGT,Boost, Fuel gauges
Boost & Fuel Pressure Bolts - Leroy Diesel
2/0 Battery Cable Upgrade - PT Wiring Solutions
PMD w/#9 resistor and Re-Location Kit, mounted to bumper - Leroy Diesel
GM-5 Turbocharger
4.10 gear ratio
OptiLube summer + Formula


Proud member #1039 of The 3500 Dually Club

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Old 12-23-2018, 10:39 AM   #8 (permalink)
Wagontrail
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Just had def heater repl'd under warranty, error code dtcp21dd, open circuit, gm has kit that includes sensor, kit contains reductant heater and level sensor assy, this is a no charge fix, seems these fail across Chevy and gmc platforms
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Old 12-23-2018, 11:33 AM   #9 (permalink)
dmax3500
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UPDATE




well it needs to go to the dealer wed
codes
p20b9
p21dd


both redactant tank heater codes


the 4mph limit on dash is a ''tamper-code/fault'',IT CAN BE RESET ONLY WITH A ''TECH2/MDI'' scanner,


the partial reset is
1.in redactant tree,you need to ck for pressure/leaks
2.completely fill def tank,and reset level too 100%
3.go into ''glow plug module'' ,and turn on all 3 heaters ,1 at a time for 10 secs
4.clear any codes




my def/redactant tank and heater were replaced last year under warrenty ,,now it needs to go back in wed to see if they can do it again
I think the def fluid is so corrosive its killing the heater element and wiring

this 4mph thing is pure GOV crap,if it happened on the hwy you would be dead


im so sick of us trying to save the planet,this is just EPA/Obama crap,,
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Last edited by dmax3500; 12-23-2018 at 11:36 AM.
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Old 12-23-2018, 12:07 PM   #10 (permalink)
dmax3500
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this tank heater replacement is covered under a spl service bulletin #14652b,or n16202940

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