mku1der

I just replaced my shocks and I keep getting shocks inoperative and maximum speed 80 mph...someone suggested I get resistors from radio shack,,if this is true what exactly do I need to ask for at radio shack,,is there a specific OEM

Vetteman Jack

You might state what year car you have - and I assume you have the adjustable suspension on it.

It sounds like you replaced the expensive adjustable shocks with a set of regular shocks, thus the error messages. You can buy simulators (or resistors) that fool the computer into thinking the adjustable shocks are still there or you can get the option turned off through the use of a Tech II programmer.

If you have the F45 suspension, instead of the newer F55 one, here are some part numbers for resistors from Radio Shack that was posted up here on the forum a while back:

Go to Radio Shack and get the following:

Wire wound Resistors
271-132
10 watt 10 ohm
(The resistor is a 2 inch X 1/4 inch ceramic block with a solid silver wire on each end. Two in a pack so buy two packs.)

Underneath the car at each shock location there is a black wire running from the shock to a blue connector. The wire does not unhook at the shock but if you trace the wire you will find the connector. Disconnect the blue connector from its mate and remove the shock.

Take a pair of wire cutters and cut the wire as close to the shock as possible. You will be left with the cut wire on one end and the blue connector at the other. Remove about three inches from the black insulation to expose the two wires (black and white) that it conceals. Strip both of them back about an inch.

Insert the resistor into a rubber hose (with the wires protruding from each end) to protect it; solder the resistor between the two bare wires (black and white) that originally went to the factory shock to complete the circuit. I used some water proof silicone to seal the solder and wrapped everything in electrical tape. Reconnect the blue connector. Tuck the package out of the way and secure with zip ties. This will fool the computer into thinking the F45 Shocks are still there (as the computer looks for its resistance). Install the replacement shock.

Repeat for all four corners and you will be good to go.

Ikester

Using Tech II:

1. Disconnect the Electronic Suspension Control (ESC), pull both connectors. ESC box is located in the rear trunk on left compartment.

Turn key to on position only

2. Navigating the Tech2
From [Main Menu]
select F0: Diagnostics

From [Vehicle Identification]
select year
select type

From [System Selection Menu]
select F1: Body

From [Vehicle Identification]
select product line (Y)
select body style
select trans

From [Body]
select F0: Body Control Module

From [Body Control Module]
select F2: Special Functions

From [Special Functions]
select F1:BCM RPO Reprogram

From [Setup New BCM]
select US & Canada RPO V73

From [BCM RPO Reprogram]
highlight RPO F45 option line
press deselect

3. Select Save Changes

4. Turn key off

5. Turn the car on and verify that the dreaded - MAX SPEED 80 MPH - is gone.

mku1der

its a 2003 anniversary edition...thank you so much for your assistance

i will definitely try this

my50thAE

From [BCM RPO Reprogram]
highlight RPO F45 option line
press deselect

Does this also work for the F-55 system in the '03 AE?

$$$frumnuttin'

my dealer deselected mine for a whopping $25....go ask for it to be done.

John Holmes

My dealer did it free. Took 10 mins.

tran7274

Dear,

I have a question. What is the Tech II? Is it something I would have to buy in order to reset the error?

Thanks
Leon Tran

Triet-Vy Tran

thanks for the response. That is exactly what displayed on my Vett. 5 Codes and i can be able to clear with the manual diagnostic. Unfortunately, those codes came back almost immediately. Well, the Type II diagnostic tool does look like the real solution. Do you know where I could buy one? or it is only for the Cheverolet service people to use?

Leon Tran

Sox-Fan

What were the 5 codes?

Patches

Tech II is an expensive diagnostic tool that you don't want to buy just for a one-time use to disable F45/F55. That being said, if you're in the SoCal area, I'd be happy to use my Tech II to delete F45 or F55 from your C5.

65GGvert

Just to be clear, you don't have the F45 system described. You have the F55 and it can be cleared without resistors or modifying wiring.

65GGvert

Thanks, I didn't notice that. That's why I hate leaving posts open for years.

LuisG

how long after you do all this does the code erase from the car? Do you unplug the battery or is that an ignition trick to clear the code for good after?

Sean_emory

Disconnect your battery for a few hours and if you did it correct it will be gone. It still shows the error is you don’t wait.

Smoken1

Do you still have the switch in the car and plugged in?
Are all 4 of these still on the car and hooked up?