TDS?? Theft Deterrrent System. They are a number of interlocks with starter enable relay, fuel enable, door ajar, hatch ajar, key in ignition , etc. that if not working properly could cause starting problems. I think I would start with fuel and or starter relay first.

TPS (throttle position sensor) is attached to the throttle body---will not cause a no start.  YES it does sound heat related to me--there is a time frame when under hood temperatures actually increase after turning off a engine at operating temps. The temperatures rise after turning off the engine BEFORE starting to decrease. The fact that the cooling system (cooling fans and water pump) is not working after the engine is shut off---causes the engines metal parts to become hotter. It very well could a electronic component under the hood absorbing this heat and going open circuit---the term as "Dragon" used applying to the starter is "heat soak"

  Finally a resolution.  Would you believe s 3 1/2 bad injectors .....  the 1/2 was intermittent. After 2 - 3 weeks of testing and trying thats what it came down to.  When OHMING ot the injectors they must read between 15.8 and 16.9 OHMS.  Also if you use a NOID light it must be bright or the injector is suspect.  When taking the intake off we found loose bolts and a set of RE-POP injectors in it.  The car only has 52,850 miles on it.  Injector replacement already ? ? ?  Do NOT trust RE-POPS.  The new injectors cost almost $100 each and I know that I can get them cheaper but I hve to go with my mechanic.  Boy anm I glad that's over....      Thanks for all the help andd suggestions guys....

 ... and gals

some of those electrical problems can drive you up a wal.. glad to hear it's fixed and enjoy your vette.

Check out the wire harness junction directly behind the battery.  I just loaded a picture of it to the forum.