New member looking at buying a Duramax - Chevy and GMC Duramax Diesel Forum
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post #1 of 10 (permalink) Old 01-04-2020, 07:34 AM Thread Starter
 
Join Date: Jan 2020
Location: Coldwater, Mi
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New member looking at buying a Duramax

Hello everyone I am Tim I live in Michigan and am looking at buying a Duramax. I have never owned a diesel before
and I am currently looking at a 2012 GMC 2500 Denali with 345,000 miles on it. I am wondering if the 21,000 price is to high for a truck with this kind of mileage. Thank you for any advice you have.
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post #2 of 10 (permalink) Old 01-04-2020, 08:48 AM
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Yip, too high, in my opinion. I have a nice 2012 with 284k that I really doubt that I can get $15k out of. Dealers are not even interested, at any price.

The problem is the LML engine. If you haven't researched it, do some reading. There's a class action lawsuit against GM due to fuel system failures. Fuel pump goes bad and bam, $10k repair. I did my own last summer for about $3k but I had a buddy that ended up in a shop in Atlanta and spent $14k. Then you have to baby it with fuel additives and really watch your fuel and filters hoping that it's at least 100k miles before it happens again. I got 244k out of mine but it's the exception. My buddy's truck got his 4th fuel system at less than 170k miles. It was a really nice 2015 Denali dually and I think he got like $12k trade in on it.

It's up to you. A 2012 can be an ok deal if you buy one cheap and it's got a fresh fuel system. Helps if you're prepared to do your own maintenance too. At 345k miles, I'd definitely want to see maintenance records. If it's at a dealer and you're interested and all the maintenance pans out and you think you'd like to have it, make them an offer. I'd be shocked if they wouldn't take much less than $21k for a high mile 2012. A dealer probably didn't put $10k in it.

Good luck and keep asking questions!
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2012 3500 4X4 CCLB
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post #3 of 10 (permalink) Old 01-06-2020, 05:16 AM
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2016 GMC DenaliHD Crew Cab 4WD DRW 3500, GAZ Summit White/H2Y Cocoa Dune, 5SA Denali, CF5 Power Sunroof, LML Duramax 6.6L Turbo Diesel w/ Allison 6 Speed Trans, Il6-I06 Audio System 8" Diagonal Color Touch W/Navigation & Intellilink, U42 Rear Entertainment System, Z82 Trailering Equipment Pkg, Z85 Heavy Duty Suspension, UY2 Camper/5th Wheel Trailer Wiring Provisions, Y65 Driver Alert Package, UD5 Front & Rear Park Assist, KB6 Heated & Vented Seats Driver & Front Passenger, JL1 Trailer Brake Controller
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post #4 of 10 (permalink) Old 01-09-2020, 01:24 PM
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Welcome!

2016 GMC Sierra 2500 Denali HD, 4x4, white, stock.
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post #5 of 10 (permalink) Old 01-10-2020, 03:56 PM
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Welcome to the DF!

2001 2500HD 4WD EXTENDED CAB LS,
S&B CAI, 4" STAINLESS STEEL EXHAUST, EFI LIVE FROM ATP TRUCKS, EDGE CTS, PPE BOOST VALVE, BANKS INTERCOOLER PIPE, AIR DOG II 165, REBUILT TRANNY WITH SUNCOAST KIT, TRANSGO SHIFTKIT AND BILLIT TORQUE CONVERTER, NEW UPGRADED TAILSHAFT, PUMP RUB FIX ON TRANSFER WITH NEW ALUMINUM TAIL SHAFT, NEW TOW MIRRORS, NEW GAGE HEAVY DUTY FRONT AND REAR BUMPERS, BEANS SUMP, FUMOTO VALVE, RARE PARTS TIE RODS WITH COGNITO PISK, MAD JACK FUEL FILTER ACCESS DOOR, STAINLESS STEEL SPEED BLEEDERS.
2011 GMC 3500HD DUALLY Welding Bed, 4WD CREW CAB, 4" downpipe back exhaust, def delete, egr delete, with new LB7 up pipe, pcv reroute, Fass 150, EFI live with DSP 5, HSP CAI. Air Lift Air bags. PPEI transmission tune.
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post #6 of 10 (permalink) Old 01-14-2020, 02:44 AM
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Welcome, you came to the right place! I'm sure all your questions will be answered by many experts here. Looking forward to some pictures.


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post #7 of 10 (permalink) Old 01-14-2020, 08:08 AM
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Welcome! I would keep looking, as mentioned the early CP4 pumps were prone to failure, causing expensive repairs due to metal debris in the fuel system & injectors. Some of these trucks have been converted to the older reliable CP3 pumps but that price is way too high, especially if the truck has lived its life in the "rust belt".

2004.5 GMC SLT 4X4 CCLB LLY Ally, some mystery stuff, trans by Mike L, Magnaflow DP, Ride Rites, LBZ turbo inlet mod, AD II 165, po' man CAI, HIDs, stock height, Cognito tie rods, Bilstein 5100s, Isspros, H2 wheels with Toyo OC 285-70-17s, B&W turnover & Companion, Prodigy P3, dog snot on windows......


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post #8 of 10 (permalink) Old 01-14-2020, 09:28 AM
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There are 2012s trucks near that price, with under 150k miles if ya drive a few hours....but as AlleyCat mentioned, 2011-2016s are a bankruptcy in hiding, IMO. Weak pistons too. Study up on the maintenance extras other are doing to keep that beast at bay, if you're set on an LML Dmax.

Not many pics on this one...on-site inspection, may be a rust bucket.
https://www.autotrader.com/cars-for-...ckType=listing

fly and drive from the South....people do it all the time.
This one is uber clean and lots of pics....(not skeered of showing it, but I would've cleaned it up under the hood).
https://www.autotrader.com/cars-for-...ckType=listing

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"

Last edited by Hook'em_Horns!; 01-14-2020 at 09:32 AM.
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post #9 of 10 (permalink) Old 01-14-2020, 09:30 AM
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Welcome to the forum. No way id pay 21 for a truck with over 200k. I looked at a real clean lly the other day. You can find lly-lml with 120k on them for low 20s.

Race/Pulling truck:2012 Cummins/Built 6.8L/Big air/Big fuel/48RE Swap/PCS 2000/B&M Gated shifter
Playing eye spy for another duramax
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post #10 of 10 (permalink) Old 01-14-2020, 09:58 AM
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Lower than that.....I see many LBZs with 150k or less for $5k
less than that Denali....but they're LS trim....without all of the bling.

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"
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