03 LB7 swap to LBZ

[036.6turbo]

My truck is a 2003 CCSB 4wd 2500 DMAX Alli SLT. 336,000 miles. It is going to need a set of injectors soon. (catching a hint of white smoke, 105,000 miles on this set).

Instead of putting another set of injectors in, I was considering swapping over to a LBZ.

I found an 07 classic work truck 2WD, 188,000 miles. LBZ with six speed.

Build sheet of donor truck;
Option Codes
*IVH is not the definitive source of GM Vehicle RPO information and is intended for service reference only. Should there be any questions about the vehicle's original build or RPO information please refer to the original vehicle invoice or window sticker.

1SZ - PREFERRED EQUIPMENT SAVINGS 1WT - BASE EQUIPMENT GROUP
50U - SUMMIT WHITE 5B5 - SEO - POWER WINDOWS
5M1 - SEO - POWER MIRRORS 69D - DARK CHARCOAL
69I - DK PEWTER INTERIOR TRIM 6GL - FRONT SPRING
7GL - FRONT SPRING AE7 - CUSTOM CLOTH BENCH SEATING
AJ1 - TINTED GLASS AM7 - FOLDING REAR SEAT
AU3 - POWER DOOR LOCK SYSTEM B71 - WHEEL FLARES
C6W - GVW RATING - 9,200 LBS CJ3 - AIR COND., DUAL ZONE MANUAL
CMD - ASSEMBLY PLANT - FLINT, MI CWT - WORK TRUCK NAMEPLATE DELETE
E2C - ORDER TO DELIVERY - EXPEDITE E63 - FLEETSIDE BODY
FE9 - 50-STATE EMISSIONS FLT - FLEET PROCESSING OPTION
FT2 - ARM TORS BAR SPRING ADJ FT3 - ARM TORS BAR SPRING ADJ
FVX - NATIONAL FLEET PURCHASE PROGRAM G80 - LOCKING REAR DIFFERENTIAL
GT4 - REAR AXLE, 3.73 RATIO HVY - IDEN 2 INCH BODY RAISE,HD MODEL
JH6 - 4 WHEEL POWER DISC BRAKES, HD K05 - ENGINE BLOCK HEATER
K34 - CRUISE CONTROL K47 - HIGH CAPACITY AIR CLEANER
KC4 - ENGINE OIL COOLING SYSTEM KG3 - 145 AMP ALTERNATOR
KNP - HD AUX TRANS. COOLING SYS KUP - THROTTLE CONTROL ELECTRONIC
LBZ - DURAMAX DIESEL 6.6L V8 TURBO 360 HP, 650 LBS/FT TORQUE MW7 - ALLISON 6 SPD AUTOMATIC TRANS
NT9 - EMISSION SYSTEM FEDERAL TIER 2 PHASE OUT PDN - HEAVY DUTY POWER PACKAGE: DURAMAX DIESEL 6.6L V8 TURBO 360 HP, 650 LB - FT TORQUE ALLISON 6 SPD AUTOMATIC TRANS LOCKING DIFFERENTIAL-REAR AXLE
QIZ - LT245/75R16/E ALS BW TIRES R6K - TURN BY TURN - NOT USED
R6P - PREMIUM PAINT R6U - GE ORDER IDENTIFIER
R8C - ******************************* *** 2007 CLASSIC SILVERADO **** ******************************* R9N - LEATHER SEAT TRIM
R9Z - POMS EXPEDITE-SOLD ORDERS TFD - RETAIL AMENITY DELETE
TQ3 - BATTERY 770 CCA (DUAL) TR3 - CHROME GRILLE
UB0 - AM/FM STEREO W/CD PLAYER (REPLACES STD/OPT RADIO) UQ5 - SOUND SYSTEM FEATURE, 4 SPEAKER
V10 - DIESEL ENGINE WINTER COVER V43 - PAINTED REAR STEP BUMPER
V73 - STATEMENT OF VEHICLE CERT.-U.S. /CANADA V76 - RECOVERY HOOKS
VG3 - CHROME FRONT BUMPER VQ1 - FLEET ORDERING AND ASSISTANCE
VR4 - WEIGHT DISTRIB. PLATFORM HITCH VXS - COMPLETE VEHICLE LABEL
X88 - CHEVROLET CONVERSION XHH - LT245/75R16/E ALS BW TIRES-FRNT
YD3 - BASE AXLE YD5 - BASE FRONT SPRING
YD6 - BASE REAR SPRING YHH - LT245/75R16/E ALS BW TIRES-REAR
YK6 - SEO IDENTIFICATION Z82 - HD TRAILERING EQUIPMENT
Z85 - HANDLING/TRAILERING SUSPENSION ZHH - LT245/75R16/E ALS BW SPARE TIRE
ZY1 - SOLID PAINT


How hard is it to take the LBZ from the work truck and install it my 03?

Thank you for any input.

 

[07keo02]

From what I understand this will be mostly "plug and play" with an 03 truck. You will need to use the LBZ trans as well so you will have to swap over the column shifter and of I'm not mistaken the cluster. I'm not sure if the 5 speed and 6 speed 4X4 tail housing is interchangeable but I'm sure someone will confirm. You will have to splice one of the coolant hoses to adapt it to your lb7 radiator or use the lbz radiator. There are other small things but certainly doable. There are a few people on here that will probably post that know this swap like the back of their hand, or better.

 

[rfletes79]

Put the entire cooling package from the LBZ, way easier and better. Also the peddle and associated harness needs to come over.

 

[036.6turbo]

I went to look at the donor truck candidate last night;

1. It did not seem to have as much power as my stock tuned lb7.
2. Seem to blow a lot of black smoke, for what I would assume is a stock tuned truck.
3. It seemed to have a vibration in the engine, under power.
4. I could not hear the turbo? I was under the impression LBZ turbos were more audible than my LB7.
5. Tap shift selector did not work.
6. It has a code set, could not pull it, as someone has damaged the OBD port.
7. OBD port wires have been spliced (or tapped into), not sure why maybe a tuner?

I would like to put the OBD port back together enough, to at least get a look at what codes are set.

I told the seller I would get back with him. I could obviously buy the truck as is, and fix it prior to the swap. (Assuming the repairs are not too significant.) But my LB7 is smoking white. Not at every idle, but it is happening more frequently. If I buy the LBZ, i could end up with two trucks that don't run right.

Just thinking out loud.

 

[07keo02]

What's the deal with the donor, wrecked?

 

[DAVe3283]

If the donor is in sketchy condition already, merging the harnesses is going to be that much harder. You won't know if the electrical gremlin you are chasing is because you forgot to hook something together right, or if it is just the sketcy wiring from the donor.

Unless you are getting one heck of a deal on that donor truck, I would walk away from that one.

 

[Dkatubi06]

The OBD port wires look like it may have had remote start or an after market alarm at one point in time

 

[RPM Motorsports]

You will need

Motor, motor harness (body and fuse box side)
Trans, shift bracket, shift arm
Tap shift leaver
Throttle petal, petal harness, petal bracket
Cluster (optional)
ECM/TCM

No need for the whole cooling system, the LB7/LLY lower radiator hose fits the pump..., tight but it fits.
I have a wire pin out in one of my threads on here, think it was called "LB7 to LBZ wiring" or similar. You can use the factory LBZ CAC piece and acordian boot, with a 3"L bead rolled 3" tube to connect to the factory IC boot. The drivers side I leave LB7.

 

[036.6turbo]

What's the deal with the donor, wrecked?

It was just wooped out, it had been a work truck, sold new as a fleet truck.

If the donor is in sketchy condition already, merging the harnesses is going to be that much harder. You won't know if the electrical gremlin you are chasing is because you forgot to hook something together right, or if it is just the sketcy wiring from the donor.

Unless you are getting one heck of a deal on that donor truck, I would walk away from that one.

Yeah, I did.

The OBD port wires look like it may have had remote start or an after market alarm at one point in time

I didn't think of remote start, but you may be right.

You will need

Motor, motor harness (body and fuse box side)
Trans, shift bracket, shift arm
Tap shift leaver
Throttle petal, petal harness, petal bracket
Cluster (optional)
ECM/TCM

No need for the whole cooling system, the LB7/LLY lower radiator hose fits the pump..., tight but it fits.
I have a wire pin out in one of my threads on here, think it was called "LB7 to LBZ wiring" or similar. You can use the factory LBZ CAC piece and acordian boot, with a 3"L bead rolled 3" tube to connect to the factory IC boot. The drivers side I leave LB7.

Thanks Russ.

I will continue to look for parts.

Thanks guys for all the input.

 

[036.6turbo]

You will need

Motor, motor harness (body and fuse box side)
Trans, shift bracket, shift arm
Tap shift leaver
Throttle petal, petal harness, petal bracket
Cluster (optional)
ECM/TCM

Can I use a 2wd trans and just steal the wiring harness and valve body off of it? Install those on my 4wd 5 speed allison?


Looking at a service truck. 06 LBZ six speed. 2WD.




Option Codes
*IVH is not the definitive source of GM Vehicle RPO information and is intended for service reference only. Should there be any questions about the vehicle's original build or RPO information please refer to the original vehicle invoice or window sticker.

1SA - WORK TRUCK PACKAGE INCLUDES: *CHASSIS CAB BODY *AM/FM STEREO *CHROME FRONT BUMPER 1SZ - OPTION PACKAGE SAVINGS
50U - SUMMIT WHITE 69D - DARK PEWTER
69I - DARK PEWTER INTERIOR TRIM 6GL - SPRING COMPTR SELECT FRT LH
7GL - SPRING COMPTR SELECT FRT RH AE7 - UPLEVEL 40/20/40 FRT SPLIT BENCH SEATS - CUSTOM CLOTH
B3P - BAILMENT COMMERCIAL ORDERS B71 - WHEEL FLARES
C7W - GVW RATING - 11,400 LBS CJ3 - DUAL ZONE AIR COND - MANUAL
DG5 - WEST COAST TYPE EXTERIOR MIRROR FNF - FLOOR POWER TAKE OFF
FT4 - ARM LH TORS BAR SPRING ADJ FT5 - ARM RH TORS BAR SPRING ADJ
G80 - H.D. REAR LOCKING DIFFERENTIAL GMC - ASSEMBLY PLANT-PONTIAC EAST
GT4 - REAR AXLE - 3.73 RATIO HVY - IDEN 2 INCH BODY RAISE,HD MODEL
JH7 - 4 WHL PWR DISC BRAKES,12000 LBS K05 - ENGINE BLOCK HEATER
K47 - HIGH CAPACITY AIR CLEANER KC4 - ENGINE OIL COOLING SYSTEM
KG3 - ALTERNATOR 145 AMP KNP - H.D. TRANSMISSION OIL COOLER
KUP - THROTTLE CONTROL ELECTRONIC LBZ - DURAMAX 6.6L TURBODIESEL V8 ENG 360HP, 650LB-FT TORQUE
M1F - POWER TAKE OFF ACCESS MW7 - ALLISON 1000 6-SPEED AUTO TRANS
NC7 - FEDERAL EMISSION OVERRIDE NC8 - CALIFORNIA ULTRA LOW EMISSIONS
PDN - HEAVY DUTY POWER PACKAGE INCL: *DURAMAX 6.6L TURBO DIESEL ENG-360HP, 650 LB-FT TORQUE *ALLISON 1000 6-SPD AUTO TRANS *H.D. RR AUTO LOCKING DIFF PDP - FULL-FLOOR RUBBER COVERING
PTO - PROVISIONS FOR POWER TAKE OFF R6P - PREMIUM PAINT
R6V - UPFIT IDENTIFIER R8A - LAM PROCESSING EXEMPTIONS
R8K - ******************************* R9Z - POMS EXPEDITE-SOLD ORDERS
SLM - STOCK ORDERS TQ3 - BATTERY 770 CCA (DUAL)
U01 - ROOF MARKER LAMPS UM7 - AM/FM STEREO (REPLACES STD/OPT RADIO)
UQ5 - STANDARD SPEAKER SYSTEM V10 - WINTER COVER
V73 - STATEMENT OF CERT. U.S. VC0 - LABEL NOISE CONTROL INFORMATION
VF7 - DELETE REAR STEP BUMPER VG3 - CHROME FRONT BUMPER
VGH - SHIP THRU FREIGHT - MONROE TRUCK EQUIPMENT VK3 - FRONT LICENSE PLATE MOUNT
VXT - INCOMPLETE VEHICLE XYK - LT215/85R16/D HWY BW TIRES
YD5 - FRONT SPRING - BASE EQUIPMENT YD6 - REAR SPRING - BASE EQUIPMENT
YD7 - BASE EQUIP FOR SCH GVW PL-FT A YF5 - CALIFORNIA EMISSIONS
YYK - LT215/85R16/D HWY SBR B/W-REAR Z85 - HANDLING/TRAILERING SUSP PKG
Z88 - GMC TRUCK NAMEPLATE ZW9 - CHASSIS CAB BODY
ZY1 - SOLID PAINT

 

[036.6turbo]

I called Mark at Daneville about possibly doing the tuning on this swap. He expressed a concern that my donor vehicle was a cab and service body.

The BCM on the service body handles the two fuel tanks differently. He was not sure the fuel gauge on my LB7 could be made read correctly?

Has anyone ran into an issue like this? Could this donor truck still be used, but get a ECM from another LBZ truck, that was not a service body?

I am supposed to pick up the donor this Saturday. Wondering now if I should continue with this donor or pass and keep looking.

 

[DAVe3283]

I am not sure on the LBZ, but on the LB7 you could swap segments in the ECU to make various combinations of things work. I would think you could just flash the ECM to the standard config, just have to find a file (or a VIN to look up the file) from a standard truck.

 

[036.6turbo]

LBZ donor truck, being hauled home by the LB7.

Anyone need a service body?

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[TheBac]

Where'd you find that gem?

 

[036.6turbo]

Muskegon, drove past you to get it.

What, you don't like it?


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[TheBac]

Oh no, I like. Perfect swap partner. :thumb:

I was just thinking that the pic looks like it was took at the rest area just before 69 branches off EB 96 at exit 91.

 

[036.6turbo]

I guess we'll see. Tires are new, cab is already spoken for.

I think I can make a few bucks parting it out.

It runs good.

Core support and stack are toast, but I hope to use my LB7 pieces for that.


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[036.6turbo]

Oh no, I like. Perfect swap partner. :thumb:

I was just thinking that the pic looks like it was took at the rest area just before 69 branches off EB 96 at exit 91.

It was.

I stopped a few times on the drive back, to check the straps and trailer tires. Trailer is borrowed.

I bought the truck from;
Fodrocy Used Cars & Parts.
Muskegon Mi.


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[TheBac]

OK, I even scared myself that I knew that. :roflmao: Congrats on the find!

Yeah, use your LB7 stack.

 

[036.6turbo]

OK, I even scared myself that I knew that. :roflmao: Congrats on the find!

Yeah, use your LB7 stack.

You truck drivers know all the best rest stops!


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