I am having the following problem and I would appreciate any and all help. My 2005 C6 Z51 has an intermittent problem upon starting. The security light will come on then I will receive the following messages in the information center, Shocks inoperable, traction control inoperable, fuel system, service vehicle , etc etc.

 

Classic symptoms of a weak battery in the thros of death.
How old's the battery?

Have battery load tested, even relatively 'new' batteries can & do fail.

 

Should be an easy solve.

Start with pulling the Battery terminal off, cleaning them (don't reconnect them with some dielectric grease yet).
Hell, may as remove the battery while your at it, since there are two connectors on the passenger fire wall that you need to clean as well.
Next, remove the top section of the engine fuse box, and clean not only the bottom spades of the upper fuse box, but the lower blocks female spades, then put it back together, including a touch of dielectric grease on the main terminal when you reconnect the battery cable.
While you on that side of the car, jack up and pull the front passenger wheel, remove the back fender wall piece, then pull the ECM connectors to clean/dielectric grease them as well. While you have the tire off, and that end up, each both the positive terminal nut of the starter solenoid where the batter to alternator cables connects, and make sure that the nut is still tight. Above the starter, is the battery ground to engine block, so make sure that bolt is tight as well.
Note, battery ground cable has two ground wires, so make sure that the smaller cable to the rail nut is tight as well.

Over on the other side of engine compartment, need to pull and clean the EBCM connector next.

Battery still disconnected, go in the passenger foot wheel in the car, and clean the BCM connectors next.

Now with all these clean, you can reconnect the battery and see if it solved the problem.

 

Thank you for the information.

 

Thank you for that information.

 

Crank Position Sensor.