Same list is on at least 3 other forums --

About like this one.

This is a list of little known facts for the C6, whether or not they're in
the manual.

-The C6 has front and rear brake cooling ducts beneath the car. They use
high pressure areas to bring air to the low pressure areas where the brakes
are.

-The button between the "1" and "2" buttons on the door is for easy
exit/entry.

-The doors have a manual release located near the floor.

-The C6 can be entered by using the provided key in the lock above the rear
license plate.

-The hatch can be opened by a soft button beside the lock above the license
plate.

-The C6 can be started by placing the fob in the hidden receptacle in the
glove box.

-The Automatic transmission has programming to hold gears while cornering.

-To get the dash to dim, you need to hold the dimmer switch in when rotated!
The book does not tell you to push it in prior to rotation for the dimming.

-To get the garage door opener programmed when you have a variable code
opener like Sears sells, you need to press the learn button on the unit then
push the opener button in the C6 3 times for 2 seconds and it picks up the
code. The book does not state that however if you go to the web site it will
tell you how to address this problem.

-The holes on the inside surface of the exhaust tips are to eliminate
high-RPM hiss.

-Turn the light switch one notch up from "auto" and then release to turn off
the DRLs.

-Moving the turn signal lever part way and then releasing it will cause the
lights to blink three times. This is for lane changes.

-To fully turn off traction control, you must press the button twice.

-If your window does not roll up or down that little bit at the top
(indexing) then it may need to be reset. This is explained in the user's
manual, and involves holding the window down for 5 seconds using the switch
and then holding it all the way up for 5 seconds using the switch.

This list is for the C5 secrets:

1. The little yellow "helper light" on the bottom of the rear-view mirror
that illuminates the shifter area.
2. That you can put your key in the driver's door and turn it twice towards
the front to unlock the passenger door and a third time to pop the trunk.
3. That you can pop the trunk and also pop the gas cap cover by pulling on
metal lines hidden in the back.
4. That the little slotted cover on the dash behind the steering wheel is
where the inside air temperature sensor is located.
5. All of the option codes are in the glove box. And if they aren't there,
look on the underside of the rear compartment lid (passenger side, I think).
6. Tire inflation recommended pressures are on the driver's door (don't
laugh, this comes up a lot).
7. The thing that looks like a little LED near the DIC buttons is a light
sensor.
8. The thing that looks like a little LED near the defroster vent is a UV
sensor for determining A/C usage to compensate for the heating effect of the
sun.
9. Your build sheet is in the front re-bar, your front bumper cover must be
pulled for access!
10. When the engine is shut off, you can get the odometer reading by turning
on the parking lights.
11. You can program setting #3 (both memory buttons at once) in the seat
memory to run the seat back and steering wheel forward for getting in/out of
the car with the engine running.
12. Reset oil life by pumping gas pedal 3 times (but not with the engine
running).
13. Hold down RESET button while on one of the trip odometers and it gives
you the mileage you traveled since last starting the car.
14. Hold down the Active Handling button for 5 sec. to engage "Competitive
Driving" (2000 and previous years must be stopped.)
15. If you hate DRLs you can pull the e-brake ONE click and they go off....
16. Simply remove fuse #2 under the hood and your DRLs will be out
permanently. Only thing affected is that when you unlock at night using the
key fob your front turn signal lights and back up lights will not flash. You
front turn signals will operate normally. GO STEALTH and extend the life of
your front turn signal bulbs (changing them out is not picnic).
17. The side-view mirrors can twist both forward and backward, decreasing
the chance of damage if struck.
18. If you pull the seatbelts all the way out while you're buckled in, they
ratchet back in to hold you tighter into the seat (that's how the owner's
video describes this feature)
19. The parking brake is self-adjusting... but depends on the car rolling or
wanting to roll backward to work. Not mentioned in the owners manual (looked
for it).
20. I didn't realize there is a red LED light on the left side of the radio
so I had one installed to work when the security system is on. Someone told
me to program the radio theft lock feature and that initiated the LED
flashing. Now I have two of them flashing when the security system is on.
21. There is a release opening with a flap to let air out of the car when
the hatch is closed.
It is located just above the driver side rear compartment, behind the panel.
22. There is a spot on the driver side just out of the middle compartment
under the carpet for the lug nut key. You should have a compartment on the
drivers & passenger's side (in the trunk) and a center compartment. On the
left (drivers) side of the center compartment, on the left side where the
center cover fits, there is an 'indent' that holds the wheel lock key.
23. The bolts that hold the disk changer in the car, when installed from the
factory cannot be removed. They have to be cut off.
24. You can ground your amp to a screw/bolt that holds the rear middle
compartment to the frame.
25. If you turn on the headlights, then go to parking light position
quickly, the lamps remain up but the headlights are not burning - this is
for washing the lights.
26. If you have a 6-speed car you can pop the trunk when the car is running
by lifting the e-brake.
27. On my Z06, the interior illumination light (the light that shines down
from the rear-view mirror) is blue-ish and it will turn to a yellow color by
sliding a colored lens over the lamp opening (no sheezot!) - I am not sure
why this happens but the light does illuminate the console/shifter area.
28. Also not listed here, but the good CorvetteForum folks schooled me on
this - if you go to comp-mode on the DIC, you can just hit reset to go back
to displaying whatever mode you were in (fuel, odom etc.) and the comp-mode
will still be activated.
29. If you have the passive entry feature: If you lock your keys in the car,
wait a few minutes and then shake the car. That will unlock the car.
30. HUD has a shift light for manuals.
31. You can easily shift the M6 trans up or down without the clutch if you
match revs. (Not great for longevity, however.)
32. You can eject the CD from the in-dash player without turning on any
power. Don't even need key in the ignition.
33. The cruise will disengage if you purposely make sharp side to side turns
while cruising at say 60-80 mph.
34. When the engine is shut off, you can get the odometer reading by turning
on the parking lights.
35. HUD has a shift light for A4's too... it comes on during a WOT run just
before it shifts!
36. With the engine off, opening the glovebox automatically turns on
interior lighting.
37. You have 20 minutes of auxillary power after shutting the car off.
38. There a key combination that can get the DIC to show any codes the car
has thrown without autotap, etc. That combination is as follows:
. Turn the ignition key to the ON position, but do not start the car.
. Clear any pre-set messages by pressing the RESET button.
. Hold the OPTIONS button down, and press the FUEL button 4 times. This will
get you into the CODES section of the DIC. The computer will automatically
display all the codes your car has created. It will cycle through each code
every 3 seconds. Any code that ends in H is a code that was registered
previously but is no longer an issue.
. Once the computer has finished going through all of it's codes, press
RESET to enter Manual Configuration mode. It should start with a module and
show "NO CODES" or "# CODES".
. To optionally reset the codes once in manual mode, press and hold RESET
until it displays "NO CODES".
. Press OPTIONS button to go to the next module.