Jump to content
  • Blog

2007 GMC Sierra 2500 LBZ



VIN: 1GTHK23D67F110033

Options and Standard Features


  • Engine: Duramax Turbo Diesel 6.6L V8
  • Heavy-Duty Power Package
  • Heavy-Duty Rear Automatic Locking Differential
  • Heavy-Duty Trailering Equipment
  • Manual Dual-Zone Air Conditioning
  • Power Tilt-Sliding Sunroof W/Express-Open
  • Rear Seat Entertainment System
  • Transmission: Allison 1000 6-Speed Automatic

Basic Information

  • Stock Number: 2319
  • VIN Number: 1GTHK23D67F110033
  • Style Name: 4X4 Crew Cab 6.6 Ft. Box 153 In. WB SLT
  • Make: GMC
  • Model: Sierra 2500HD Classic
  • Model Year: 2007
  • Type: Pickup
  • Vehicle Trim: SLT
  • Interior Color: Dark Pewter
  • Exterior Color: Onyx Black
  • Body Type: Crew Cab


  • Engine Description: 6.6L V8 32V
  • Fuel Type: Diesel
  • Fuel Induction: Direct Diesel Injection
  • Valves Per Cylinder: 4
  • Aspiration: Turbocharged


  • 4WD Type: Part-Time
  • Driven Wheels: Four-Wheel
  • Locking Hubs: Auto
  • Transfer Case: Manual
  • Transmission: 6-Speed Automatic
  • Wheels Rims: Polished Forged Aluminum
  • Wheels Spare Rim Type: Steel
  • Drive Train Type: 4WD


  • Independent Suspension: Front
  • Stabilizer Bar: Front


  • Clock
  • Compass
  • External Temp
  • Low Fuel Level
  • Tachometer
  • Trip Computer

Roof and Glass

  • Front Wipers: Variable Intermittent
  • Privacy Glass: Deep
  • Rear Defogger

In Car Entertainment

  • Antenna Type: Fixed
  • Audio System: AM/FM/Satellite-Prep
  • Premium Speakers: Bose
  • Rear Audio: Multi-Source
  • Speakers: 6


  • Drivers: Multi-Level Heating
  • Drivers Height: Power
  • Drivers Lumbar: Power 2-Way
  • Drivers Power: 8
  • Passenger: Multi-Level Heating
  • Passenger Height: Power
  • Passenger Lumbar: Power 2-Way
  • Passenger Power: 8
  • Seating Capacity: 5
  • Front Seat Type: Bucket
  • Upholstery: Leather
  • Center Armrest
  • Folding: Flip Forward Cushion/Seatback


  • Center Console: Full With Covered Storage
  • Cruise Control
  • Cupholders: Front And Rear
  • Door Pockets: Driver And Passenger
  • Overhead Console: Mini With Storage
  • Power Outlets: 4
  • Seatback Storage: 2
  • Steering Adjustment: Tilt-Adjustable
  • Steering Power: Power Steering
  • Auto Dimming Mirrors: Electrochromatic, Driver Only
  • Power Mirrors: Power Remote W/Tilt Down
  • Power Retractable Mirrors
  • Reverse Tilt Mirror: Dual Mirrors
  • Power Door Locks
  • Windows: Power Windows
  • Memory Features Exterior Mirrors
  • Memory Features Number Of Drivers: 2


  • Air Conditioning: Automatic
  • Mats: Vinyl/Rubber Front And Rear
  • Reading Lights: Front
  • Shift Knob: Urethane
  • Steering Wheel Trim: Leather
  • Vanity Mirrors: Passenger Vanity Mirrors


  • Bumpers: Chrome
  • Door Reinforcement: Side-Impact Door Beam
  • Engine Hour Meter


  • Turning Circle: 53.6
  • ABS: 4-Wheel
  • Anti Theft System
  • Safety Locks: Manual
  • Daytime Running Light
  • Engine Immobilizer
  • Headlights Auto Delay: Auto Delay Off
  • Headlights Dusksensor: Dusk Sensing
  • Front Headrests: Manual Adjustable
  • Rear Headrests: 2
  • Rear Center Seatbelt: 3-Point Belt
  • Safety Signal Mirrors: Turn Signal In Mirrors
  • Driver And Passenger Airbag
  • Door Reinforcement: Side-Impact Door Beam


  • Rear Door Type: Tailgate
  • Side Door Type: Conventional


  • Front Head Room: 41.0 Inches
  • Front Hip Room: 61.4 Inches
  • Front Shoulder Room: 65.2 Inches
  • Front Leg Room: 41.3 Inches
  • Rear Head Room: 39.0 Inches
  • Rear Hip Room: 62.9 Inches
  • Rear Leg Room: 39.1 Inches
  • Rear Shoulder Room: 65.1 Inches
  • Length: 239.7 Inches
  • Width: 79.7 Inches
  • Height: 77.0 Inches
  • Wheelbase: 153.0 Inches
  • Ground Clearance: 10.6 Inches
  • Max Gross Vehicle Weight: 9,200 Lbs.
  • Curb Weight: 5,883 Lbs.

When the LBZ was introduced to replace the LB7, the LB7’s injector issues had long been solved and the overheating issues associated with the LLY were a thing of the past. This engine’s beefier block casting, stronger connecting rods, higher pressure common-rail fuel system and updated ECM arguably made it the most powerful, drivable, reliable and tunable Duramax to date. Right out of the box, the LBZ produced 360hp and 650 lb-ft of torque. During this time frame (’06-‘07), these numbers not only outperformed the 6.0L Power Stroke’s 325hp and 570 lb-ft, but they beat out the 325hp and 610 lb-ft figures put up by the 5.9L Cummins as well. The LBZ was also the first Duramax to be coupled to the six-speed Allison 1000 automatic, which proved capable of handling more power than the five-speed version that preceded it.

Diesel enthusiasts longingly remember the LBZ as the last Duramax built before the modern day emissions crunch kicked in, which spawned pollution control technology that reduced fuel economy and greatly hampered long-term engine durability.  Arguably the most highly sought after Duramax ever built is the LBZ Duramax.

  • More meat exists in the lower section (big end) of the rod than what you’ll find on LB7
  • The beefier I-beam style rods bring more mass to the rotating assembly
  • Connecting rods were the strongest found in any Duramax up to that time
  • GM cast slightly more webbing into the main bearing regions of the LBZ’s gray-iron block for added horsepower and torque

Unfortunately nothing is perfect and in this case the LBZ pistons weren’t up to the task of surviving in higher horsepower applications.  The cast-aluminum pistons are highly susceptible to cracking.  The LBZ piston’s use of wrist pin bushings is also believed by many to be a contributing factor in OEM piston failure, along with a thinner wrist pin being utilized.


When a piston lets go, you definitely know it, as it’s accompanied by a nasty miss, excessive blow-by and smoke out the exhaust.


CARFAX Vehicle History Report for this 2007 GMC SIERRA K2500 HD_ 1GTHK23D67F110033.pdf



Replace engine oil & oil filter

10,000 miles or when "change engine oil" message is displayed by the oil life monitoring system

Replace fuel filter

2001 - 2010

15,000 miles

2011 - 2016

22,500 miles or when "change fuel filter" message is displayed

Replace engine air filter

Check filter condition every oil change and replace as necessary; replace at 45,000 miles regardless

Flush engine cooling system

150,000 miles

Replace automatic transmission fluid & filters

2001 - 2011

50,000 miles (normal conditions)
25,000 miles (severe duty conditions)

2012 - 2016

Replace external filter at 45,000 mile intervals and full service at 97,500 miles under normal conditions
Perform full service (new fluid, ext & int filter) every 45,000 miles under severe duty conditions

Replace manual transmission fluid

GM advises that the ZF S6-650 6 speed manual transmission does not require service. To maintain shift quality and promote transmission life, consider replacing fluid at 60,000 mile intervals, especially if usage meets any of the severe duty conditions.

Replace transfer case fluid

2001 - 2011

50,000 miles

2012 - 2016

97,500 miles (normal conditions)
22,500 miles (severe duty conditions)

Replace front differential fluid (4x4)

Service interval not provided by GM, routine service may promote longevity. Fluid level should be checked periodically. Drain and replace differential fluid immediately if the axle is submerged in water.

Replace rear differential fluid

Service interval not provided by GM, routine service may promote longevity. Fluid level should be checked periodically. Drain and replace differential fluid immediately if the axle is submerged in water.


Part numbers based on Silverado/Sierra trucks - some parts may not be compatible with Sierra/Express vans

Engine air filter

2001 - 2005

ACDelco A1618C

2006 - 2010

ACDelco A3087C

2011 - 2016

ACDelco A3141C

Engine oil filter

ACDelco PF2232

Oil pan drain plug

GM 11569943

Fuel filter

ACDelco TP3018

Fuel pump

2001 - 2014 (inline pump)

ACDelco EP1037, Delphi HFP955

2015 - 2016
(153.7", 144.2" wheelbase, in tank)

ACDelco MU1977 (GM 19257327)

2015 - 2016
(133.6", 158.1" wheelbase, in tank)

ACDelco MU1976 (GM 19257326)

Serpentine belt

2001 (105 amp alt)

ACDelco 6K1114, Gates K061114

2001 (130 amp alt)

ACDelco 6K1123, Gates K061123

2002 - 2016 (single alt)

ACDelco 6K1195, Gates K061195

Glow plug[1]

2001 - 2004 LBZ
(VIN 1 only, NOT 2004 LLY)

ACDelco 62G

2004 - 2005 LLY
(VIN 2 only, NOT 2006 LLY)

ACDelco 63G

2006 - 2016
(all engines)

ACDelco 9G (replaces ACDelco 61G)


2001 - 2014

ACDelco 12T100D (front), ACDelco 12T99D (rear, alternative p/n 131131)

2015 - 2016

ACDelco 131-131

Thermostat housing gasket

ACDelco 97223686

Coolant reservoir cap

2001 - 2010

ACDelco RC85

2011 - 2016

ACDelco RC115

Upper radiator hose

2001 - 2005

ACDelco 24485L, Gates 22698

2006 - 2008

ACDelco 24589L, Gates 23227

2009 - 2010

ACDelco 24655L, Gates 23499

2011 - 2014

ACDelco 27035X, Gates 23721

2015 -2016

GM 22884211, Dayco 72554

Lower radiator hose

2001 - 2005

ACDelco 26397X, Gates 22650

2006 - 2010

ACDelco 26570X, Gates 23260

2011 - 2014

ACDelco 27099X, Gates 23962

Camshaft position sensor (CPS)

2001 - 2004
(LBZ, VIN 1)

GM 2134274 (alternative 2132485)

2004.5 - 2015
(2004 LLY only, VIN 2)

GM 97365038


GM 1267264

Crankshaft position sensor (CKP)

2001 - 2004
(LBZ, VIN 1)

GM 2134277 (alternative 2132486)

2004.5 - 2015
(2004 LLY only, VIN 2)

GM 9765037


GM 12672641

Automatic transmission filter

External filter, 2001 - 2016

ACDelco TF950, Allison 29539579

Internal filter, 2001 - 2005

GM 29537965

Internal filter, 2006 - 2010

ACDelco TF920

Internal filter, 2011 - 2016

GM 29542833

Transmission pan gasket

ACDelco 29549684

[1]Model years with engine crossovers should have engine model verified by VIN number before ordering glow plugs. Glow plugs are not interchangeable with all model years. See: Duramax engine models by VIN number
[2] 2001 to 2014 model year engines use a dual thermostat system, 1 front and 1 rear mounted thermostat.


Note - fluid capacities are nominal; always fill to proper level as indicated by dipstick, to the bottom of the fill plug, etc. The fluid capacities listed herein are measured in U.S. quarts ("qts") and/or pints ("pts"), NOT Imperial units. Always verify fluid specifications and capacities in your owners manual, if applicable.

Engine oil


Preferred viscosity, ambient temp > 0° F

10 qts w/ filter change


Preferred viscosity, ambient temp < 0° F, acceptable in all temps


Listed as acceptable for certain model years - not advised

Engine coolant

50/50 DEX-COOL 12346290 engine coolant , distilled water

22.0 - 31.4 quarts (5.5 - 7.85 gallons)
Refer to owners manual for application specific coolant capacity

Automatic transmission fluid

2001 - 2005 (5 spd)

DEXRON III automatic transmission fluid (replaced by ACDelco 10-9243)

7.4 qts service refill
12.7 qts total capacity

2006 - 2016 (6 spd)

DEXRON VI automatic transmission fluid (ACDelco 10-9243)

Manual transmission fluid

ZF S6-650 (6 spd)

GM TranSynd full synthetic transmission fluid (GM 12378515)

5.8 qts

Transfer case fluid

2001-2007 manual shift

DEXRON III automatic transmission fluid (replaced by ACDelco 10-9243)

2.0 qts

2001 - 2007 auto shift

AUTO-TRAK II (GM 12378508)

2.0 qts

2008 - 2016

DEXRON VI automatic transmission fluid (ACDelco 10-9243)

1.6 qts

Front differential fluid

2001 - 2010

SAE 80W-90 synthetic gear oil

1.8 qts

2011 - 2016

SAE 75W-90 synthetic gear oil

1.8 qts

Rear differential fluid

SAE 75W-90 synthetic gear oil

3.2 - 4.3 qts (varies by MY)

DEF tank capacity

5.3 gallons



Recommended Comments

  • Moderators

Looking at a couple of upgrades that would make it more my truck and what I want.

Ceramic Coating - DONE 3/24/2020 by Ceramic Pro

  • Clay bar service (strips all the impurities that were on your car previously)
  • Buff wax
  • blackout of exterior trim
  • 5 Layers of Ceramic Pro 9H
  • 1 Layer of Ceramic Pro Light Applied as a Top Coat
  • 1 Layer of Ceramic Pro 9H on Rims and Plastic
  • 1 Layer of Ceramic Pro Rain on Front Side Windows and Windshield
  • Lifetime Warranty

AMP-75113-01A Power Steps - Installed by Al on 4/5/2020

Tow Mirrors

GM OEM Tow Mirrors (boring.. no front facing turn signal) and run about $400 each (GM Part# 15904035 right & 15904034 left). Word on the reviews is they still shake just like an after market mirror does so not sure its worth the high price tag for GM Camper Mirrors.


BOOST Auto - $550 - purchased on 2020-04-07 (not received yet)

(Thought is bring over mirrors and Pop & Lock tailgate to Al)


Cab Lights


Truck Bed Accesories


Dark Tinted Windows


Body Repair

  • Right rear of bed is pushed in. Have Clarkston Auto Body see if they could fix it and put in rear window
  • replace rear sliding window with GM OEM (use clarkston auto body), or instead GM OEM use CRL
  • Get quote on fixing scratches, swirl marks
  • Get quote on rust proofing before winter
  • Remove chrome moldings from doors
  • replace plastic bed side covers with line-x spray

Interior/Electrical (Radio Knobs Speaker and Things)

  • replace radio (or figure out how to connect phone to an aux port)..  new radio means backup camera. -PRIORITY so I can get backup camera
  • replace rearview with compass/temp.
  • Upgrade gauges with LED lighting at Circuit Board Medics - avg $350


  • Fix headlamp (passenger side has condensation)
  • replace fog lights (worn out, dull, faded)
Link to comment
  • Moderators

Saturday (2020.04.11) performed Trans Filter (internal and spin on external) replacement as well as 3 gallons of new fluid and the internal trans filter lock and a new deep sump pan. Miles: 104,000


Link to comment
  • Moderators

Added EFI Live DSP5 and a TCM tune all from calibrated power (duramaxtune).  Now just trying to get the truck to find its groove.  It doesn't feel like it knows what to do. I have been keeping it in Position 1 which is the stock+ tune and I plan on keeping it here until it feels like its regained the normal shifting and driving and then I'll kick it to Position 4 which is the Eco mode to get those high miles per gallon (especially driving back and forth to Detroit for Kate's Chemo).  Then Position 2 and 3 are for towing which will also come in handy.  You can tow with Position 1 (stock+ tune) but position 2 and 3 just add some benefits you only really need when towing and its based on load. Position 2 is Heavy Load (over 8000 lbs of weight your towing) Position 3 is for Light Load (under 8000# towing).

Position 5 is for race tuning with stock equipment but could still mess up some crap so the suggestion is not not use it often if you can hold yourself back..  we know you won't be able to.

Link to comment
  • Moderators

Now getting a Check Engine light when the glow plugs are trying to warm up the engine to start.  Checking for codes it shows ECM P0672 which is a bad glow plug in cylinder #2 which is about $20 for the glow plug and looks like its a do it yourself type of job.  Its like changing a skinny, tiny spark plug.

Link to comment
  • Moderators
On 5/15/2020 at 12:56 PM, wildweaselmi said:

Now getting a Check Engine light when the glow plugs are trying to warm up the engine to start.  Checking for codes it shows ECM P0672 which is a bad glow plug in cylinder #2 which is about $20 for the glow plug and looks like its a do it yourself type of job.  Its like changing a skinny, tiny spark plug.

Changing the glow plugs fixed the check engine light.  one side of the truck they used seize and it was pretty easy to change, the other side they didn't use seize and had after market glow plugs and was a bitch to change.

Link to comment
  • Moderators

Removed the fender flares (dirt/salt traps)

initial removal


after I hosed off the Dirt and did my first pass with the eraser wheel


it appears the stock fender flares rubbed right through the paint in spots.

I brought it to Clarkston Auto Body and they said they can repaint it for around $1200

Link to comment
  • Moderators

Tire Size

whats on it now are 35x12.50 R18LT 10ply LOAD E range (mainly for the hauling)

Also I have Toyo R/T (which is Rugged Terrain which is a mix of the All Terrain tires and the Mud Tires but they are LOUD but not as loud as a mud tire but someone who drives highways alot, stay away from these unless you like to hear your tires always singing)


Noise Test with the 35 Toyo R/T tires

But I’ve been interested in some better mileage and the key is to go more narrow of a tire.  Possibly move to a 33 but trucks with a 6" lift and 33" tires looks awful in my opinion. So I wanted the Toyo Open Country ATiii tires but apparantly every store is out of them and back ordered until mid 2021 so I went with my #2 choice which I run on my 91 K5 and my wife's 4runner..  the BFGoodrich KO2's

Somehow I got rims as well.




Recording DB noise level driving 80mph with my new BF Goodrich KO2 35x12.50 Load E Range Tires fully inflated

Here are some helpful charts on explaining tire size


Some guidance based on the lift you may have for some of the GM trucks



Link to comment
  • Moderators

injector issues..  seeing white smoke from exhaust.  Time to get prices on getting it done.

  1. $4200 10 days (2yr warranty) factory bosch injectors - diesel pros and performance in swartz creek (Diagnose issue: $95/hr)
Link to comment
  • Moderators
On 10/28/2020 at 11:53 AM, wildweaselmi said:

injector issues..  seeing white smoke from exhaust.  Time to get prices on getting it done.

  1. $4200 10 days (2yr warranty) factory bosch injectors - diesel pros and performance in swartz creek (Diagnose issue: $95/hr)

I called Calibrated Power (duramaxtuner.com) found at: 455 Borden St, Woodstock, IL 60098

Talked to Chris which was a pleasure to talk to on the phone, not trying to sell me up on anything but trying to make sure I'm happy with the truck after they are done with it for what I use it for.

Just spit balling over the phone, Chris said an ideal setup for what I need (which is solid highway driveway back and forth to detroit and the occasional trips pulling the heavy RV trailer) the following would be on the table:

  • Sportsman Exergy Injectors
  • Fuel Pressure Relief Valve
  • FASS 165 Lift Pump
  • Sump and Return Lines
  • This would also include tune and boost leak test

Total: $7000 estimated and roughly three business days (not working weekends).  Will get a more accurate quote sometime in the next few days.


Scheduled for January 4th, 2021 (9am)

might also add the FASS DURAMAX FACTORY FUEL FILTER DELETE KIT Product Code: DFD-4000 ($78)

Link to comment
  • Moderators

So what's next for my beauty...

Well I'm broke so just some minor updates like:

Side Window Tint (if the truck is a rockin....)

Window Visors (the slim kind..  I'm tired of getting rain and snow coming in my truck when I need to vent the air in the truck for some reason)

AMPPowerstep_Override_Switch.jpgThe amp override switch (79105-01A Override switch with STA Controller) to open the amp steps and leave them out so when I get a car wash the running boards get clean and so do the rockers.  In my opinion amp should just include this switch for all the money we spend.  

After using it the AMP Running Boards will return to Auto Operation in the next door cycle after 30 minutes.


Link to comment
  • Moderators

I don't like fender flares at all but GM trucks (GMT800) all have them and they collect salt and rust out everything behind the plastic.

So I took off my flares and then found my tires just cover my truck in mud, dirt, salt.   its just no good but trying to find some decent fender flares that just don't look stupid is tough.

Ordered some Bushwacker flares from Vehicle Accessories. Not sure I like them or not. I don’t have a lot of choices.




Link to comment
  • Moderators

Yesterday I received my dash cluster back from Circuit Medics from changing the soldered on bulbs to LED bulbs and wow does it make a huge difference and they were fast.  When Fed-Ex dropped it off it was one business day for them to fix it and ship it out.  Very happy with my decision to send it.

Link to comment
  • Moderators

Just dropped my truck off at Dirty Diesel Hooker to get new turbo installed, ball joints and the maxtow gauges.

Link to comment
  • Moderators

Talked to Rich today around 2 and he said new turbo is in, they are working on the ball joints and getting the alignment done this afternoon.

Tomorrow (Thursday) all they have left is the gauges. 

Right now it feels pretty positive I’m getting my truck sometime tomorrow.

Link to comment
  • Moderators

Its been a bit so let me give some updates since June 9th..  a lot has happened.

2021-05-25: Brought the truck to DHD (Dirty Hooker Diesel) and while there they did the following:

  • Diagnosed why it was always spilling out black smoke: $125 (labor:125 parts:0)
  • Replaced bad stock turbo with a Danville 63.5mm VGT-N, billet coolant block off-n, up-pipe gasket and blots-N, turbo oil feed banjo-N: $3463.92 (labor:1250 parts:2213.92)
  • Replaced upper and lower balljoints on both sides with Kryptonite balljoints: $962.50 (labor:962.50)
  • Performed a wheel alignment: $70 (labor:70)
  • installed MaxTow Gauges: $375 (labor:375)
  • Diagnosed Low Rail Pressure and replaced fuel test port cap w/NTP-N: $819.99 (labor:800 parts:19.99)

TOTAL: $6056.44


2021-06-29: Purchased the DSP5_LBZ tune with the EGR delete from MotorOps: $687.75

TOTAL: $687.75


Today (2021-07-12): picked up my truck from Hank Graff Service work done which included:

  • Replacing Gear Shifter Lever since the Tow Haul button was stuck open (meaning it wasn't engaging tow haul): $232.10 (labor:153.77 parts:78.33)
  • multi-point vehicle inspection (including video): $0.00 note: no issues found with anything on the truck
  • Performed FULL drive line service which included front and rear differential and transfer case service with BG products: $285.85 (labor:100.80 parts:185.05)
  • Replaced both Thermostats: $429.79 (labor: 301.61 parts: 128.18)
  • Performed BG Cooling System Service which includes flush of complete cooling system, replace all coolant, inspect hoses and check for correct freeze protection: $149.17 (labor:100.55 parts:48.62)
  • Performed Oil & Filter change using GM Delvac Oil and A/C Delco Oil Filter: $70.00 (labor:20.75 parts:49.25)

TOTAL: $1196.28


So yea I spent some money on my truck in the last couple of months.

Link to comment
  • Moderators

Tomorrow (2021-07-20) getting my two front seats fixed so they have some padding.  I think a spring or something is poking the passenger in the ass and the drivers side feels as though a big man use to drive the truck and a big sag in the middle of the seat.  Anyhow, its not super comfy at the moment so if I could get both seats re-done, I'll be happy.

Link to comment
Add a comment...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.