rexracerx9

Which additional coolers are really in the 2008 Z51 package for a Paddle-Shift Automatic?

Are Manual and Automatic cars are equipped diffrently when ordered with the Z51 package?

What is really installed in Z51 equipped cars?

Engine Oil Cooler?
Transmission Cooler?
Power-Steering Cooler?
Differential Cooler?

I know over the years GM deleated coolers in the past and did not mention it in sales data. GM only list "additional cooling" as part of the Z51 package? They do not list the actual additional coolers.

Anyone with a 2008 Z51 read their build sheets?

Are people paying for items they think they are getting and not getting them?

Mr Valet

Because

rulez

This is what is in my glove box.

Car is a 08 3LT A6 Z51 with Nav and NPP

U 8555 (for 2008 I think)
1YY07 Base Corvette Sport Coupe
AAB Memory - Driver Convenience Package
AG2 Adjuster Pass ST - Power, Multi-Directional
AJ7 Restraint System - Seat, Inflatable, Driver & Pass, FRT & Side
AL0 Sensor Indicator - Inflatable Restraint, FRT Pass/Child Presence Detector
AQ9 Seat - FRT BKT, Luxury
BGR Plant Code - Bowling Green, KY, USA
BS1 Insulation - Acoustical Pkg
CC3 Roof - Hatch, Removable Panels, Plastic
CJ2 HVAC System - Air Conditioner FRT, Auto Temp Cont, AUX Temp Cont
DD0 Mirror O/S - LH & RH, Remote Control, Electric, Heated, LT Sensitive
DD8 Mirror I/S R/V - LT Sensitive
D42 Shade - RR Compt
FE3 Suspension System - Sport
FE9 Certification - Emission, Federal
GU2 Axle Rear - 2.73 Ratio
IL3 Trim - Interior Design (L3)
JJA PT Dress Subassembly - Installed (Modular Optimization Method Only)
J55 Brake System - Heavy Duty
KA1 Heater - Seat, FRT
K63 Generator - 110 AMP
LS3 Engine - Gas, 8 Cyl, 6.2L, SFI, Alum, HO, GM
MX0 Merchandised Trans - Auto Provisions, O/D
MYC Transmission - Auto 6 Spd, HMD, 6L80
NK4 Steering Wheel - Sport Leather
NPP Exhaust System - Performance
NT7 Emission System - Federal, Tier 2
N37 Steering Column - Tilt, Telescoping
Qx3 Chrome Aluminum Wheel Original Design
R6K PROCESSING CODE
R9N PROCESSING CODE - SEAT
SLM STOCK ORDERS
UE1 Communication System - Vehicle, G.P.S. 1
UG1 Opener - Garage Door, Universal
UJ9 Indicator - Low Tire Press, VAR 2
UK3 Control - Steering Wheel, Accessory
US3 Antenna - Diversity
UV6 Display - Head Up
U2K Digital Audio System - S - Band
U3U Radio - AM/FM Stereo, SEEK/SCAN, DVD, CD, Clock, ETR, Navigation, Voice Rec, MP3
U52 Cluster - Inst, Electronic
U65 Speaker System - 7, Custom
VA5 Language Label - English
VDD Vehicle Information - DVD, Customer Orientation
VH9 Envelope - Owner Info Man
VK3 License Plate Front - FRT Mounting PKG
VT7 Owners Manual - English Language
V73 Vehicle Statement - USA/Canada
XND Tire Front - P245/40ZR18 BW HW4 (EMT) High-Performance
YTK Tire Rear - P285/35ZR19 BW HW4 (EMT) High-Performance
Z51 Performance Package - Handling
1SZ Prefered Equipment Savings
19I Black Interior Trim
41U Black
193 Ebony
3LT Option Package

Other codes on that sticker I can't find anything on:

BC/CC
MCCPZS

My window sticker has the following text for Z51:

Z51 Performance Pkg
(Includes: Larger Cross-Drilled Brake Roters, Performance-Tuned: Tires, Stabilizer Bars, Springs, Shocks, Performance Axle Ratio)
IMO worth the $1695

I know these are on ZO6. I don't know about MN6 Z51 cars.

KNR Cooling System - Axle
KNP Cooling System - Trans, HD
KPS Cooler - Oil, Engine

1.8t

I know for sure that the Z51 option has a nicely sized EXTERNAL oil cooler mounted in front of the radiator on the drivers side of the air damn. Much more efficient and way better for a track day...I am very glad GM did this.

JmpnJckFlsh

Past policy of the NCM has been to make copies of the build sheets available after the close of the model year. I'm not sure...you may get a build sheet with your museum delivery. Build sheets are no longer available from plant personnel. It's possible no one has their build sheets yet for 2008.

On the other hand, it should be fairly easy to determine how many coolers the car has by the "forensic" evidence.

Let's start by saying that it definitely has a transmission cooler...ALL automatic transmission equipped cars have had fluid coolers since dirt was new. You can see evidence of this by supply and return fluid tubes connecting to the passenger side radiator tank.

Check the driver side radiator tank for supply and return tube connections...if it has those, it has an engine oil cooler.

Edit: After reading 1.8t's post above, I believe I remember reading that here as well...the Z51 engine oil cooler has been made an external cooler same as the Z06 beginning in 2008(?). You should be able to see it by looking down in front of the radiator or from underneath. The engine oil heat exchanger can be seen below and in front of the radiator. My mistake.


If it has the power steering fluid cooler, you will see a tubular finned object about 18"-20" lying in plain sight transversely between the radiator and the engine near the power steering rack. That object is the power steering fluid cooler.

Z51 equipped C6s have never had a differential fluid cooler, regardless of transmission type. They only have a fluid temperature sensor with DIC text warning of high fluid temperature...no temp value is given, but you can infer some information from the alarm point (it's in the service manual; I don't know for sure, but maybe 300 deg).

tscales

But I'll bet you have the 6-speed. As far as I know, the A6 doesn't have it.

SUB VETTE

I have an 06 Z51. The promotional color pictoral brochure that was provided to me at delivery states the following on the Buyer's Guide page:
"Z51 Performance package includes Goodyear Eagle F1 Supercar Extended Mobility Tires; cross-drilled brake rotors; performance tuned springs, shocks, and stabilizer bars; additional cooling for power steering, engine oil, and transmission fluids; and special gear ratios for manual transmission."
There is no diifference indicated between MN6 And A6 models except for the gear ratio statement noted.

Modshack

LOL...Yeahh, those statements are good for the standard car with the Z51 option. Throw in the OPTIONAL automatic and things change as we've seen. You didn't get mislead...Just a "Gotcha"...

anotherone

anybody go out and look yet?

Bandit1

Other than purchasing a ZO6, the best bang for the buck off the assembly line.

rexracerx9

Someone with a 2008 Z51 C6 confirmed they had a external oil-cooler in another thread.

rexracerx9

Here is a link to the thread. It looks like manual Z51's had them before 2008 also. Don't know about automatics?

need-for-speed

I have an '08 with MN6 and Z51. I also have the build sheet. It has:

KNP TRANS COOL
KPS ENG O/COOL

TTRotary

Tranny and engine oil coolers have been part of the Z51 package since 05. Power steering coolers have been a Z51 item since the C5. It is possible the 08s have upgraded to the Z06 engine oil cooler.

foremaw

You can buy your 2008 build sheet at NCM if you do the delivery there.

davekp78

A6 Z51s did not have the oil cooler through '07.

tscales

OK, let's put this to rest with concrete evidence. I have an A6 08 with Z51. I will take a picture of cooler or no cooler, if someone will explain exactly what I should look for.

Best would be a picture from an 08 MN6 Z51 pointing out the cooler -- that way I could match it.

FortMorganAl

That's what we need to end this discussion once and for all. I can tell you about LS2 but not LS3. I would bet it is the same but can't be sure so...

anotherone

my 08 a6 Z51 is on order and I'm planning on oil,trans and power steering. Rear would really be appreciated also.

TTRotary

Sorry, my comment referred to the MZ6 cars. The Autos use the oil cooler segment on the radiator to circulate and cool the ATF. Engine oil cooling is assumed un-necessary on th autos because the engine will see less severe duty than it would in an M6 car.

Also, the Manual "trans cooler" is just a fluid circuit, not a true external cooler. You can purchase GMPP trans and diffy coolers but these are expensive and ironically void the warranty for those parts.

In response to the OP, there are likely no changes to the trans and diff cooling systems (no reason to change those), and the engine probably gets an upgrade to the Z06 cooler.