‘95 Corvette convertible

[Gtstorey]

I think one of the common oil leaks, in addition to the ones you mentioned, is the timing cover. And damage to the oil cooler is also common.

 

[Rttoys]

I think he wants to race

 

[Rttoys]

Have a setback now. Took the vette to dinner last night and on the freeway around 70ish, she started shaking. Did get it home by keeping speed down, but it was really odd. Put it in the air and spun the tires. Yep. All 4 have a flat spot. Rears worse than front. Not sure why it hasn’t been a real problem before. There’s a small shake at 55 since I have had it, and figured it was tires, but now it’s a fairly violent shake above 70. I’m pretty sure the previous owner bought the tires at discount. Maybe I can work some magic to get them prorated or something. If not, R888R time

 

[G Atsma]

Never had it above 70 before this time?

 

[Gtstorey]

Mine is is sensitive to sitting any longer than about a week and will vibrate quite a bit until the tires warm up.

Have you checked the date codes on the tires?

 

[Rttoys]

I have had it over 70 many times, just not really recently. It’s never been smooth as silk, but nothing more than slight hard suspension corvette vibrations. This was pretty violent. The only changing factor is temperature.

I have. I thought I had a picture of the date code for reference, but I guess not. They are less than 2 years old, i want to say about a year and a half or so, which would coincide with when he replaced the tires around a year ago. It only had 30 miles on it from state inspection 10/23 (which was probably when he had the tires replaced) till I test drove it 9/24. I’m guessing he got the tires and state inspection in Oct of 23, took it for a small drive and parked it.

 

[Markm]

There was a bulletin we had to follow at the dealership where you drive the vehicle I think 20 miles and put it on the lift overnight with 50-60 psi in the tires then drove it the same miles in the morning with the tires overinflated and road forced the tires before we could replace them. It was great cause it paid like .3 per tire maybe. It was a pain and paid like nothing but sometimes it worked and sometimes it didn’t.

 

[Rttoys]

Meh. This thing just sat of a tad too long. I’ll get her back to normal. Got autocross in a few weeks. It’ll have new tires by then.

 

[Rttoys]

To note.
front tire date code: 42/22
Rear tire date code: 06/23

so basically 2 years old.

 

[Rttoys]

My buddy told me where there was a key shop that has the old “chip reader” from the dealer back in the day. Sure enough, read the key code and cut me new keys. Now I have extras. Still waiting on my key fob.

 

[Desert Sasqwatch]

Could he do Goblin (Cobalt) keys? Would he be overwhelmed if he started receiving keys to duplicate? How much would he charge?

I have a single key for my Goblin and would like to have a couple spares.

 

[Gtstorey]

All you have to do on the c4 Vette is measure the resistance of the chip with a dvm. The chip is just a resistor and there are only a few possibilities that it can be. Order the blank with the correct resistance and any key cutter can handle it from there.

Cobalt has to have the correct blank with the correct chip cut and then the programming is done by/in the car, As long as there hasn’t been 10 keys already programmed and you have a good key. Local locksmith supplied the key and cut for about $25.

 

[Desert Sasqwatch]

Good to know. Is there a published procedure for the in car programming?

 

[Rttoys]

This dude had the machine, the keys and the cutter. I didn’t have to do anything but pay him.

cobalt and all newer GM vehicles are easier. Get a key cut that is made for passkey. (I’ll get the GM part number when I get home). Get it copied from your key. Go to goblin and put original key in, turn to run (not start). Turn to off and Pull key out, put in new key and turn to run. Turn to off position and new key is programmed.