kg54trains

Lose a spare ignition key for my c5(1998) coupe.. Is the dealership my only recourse for the replacement.. The key has a small metal chip bulit in to it that I assume is a dealer related item.. Anybody have gotten a new key and what was the cost of this service

grantv

The chip is a resistor, it needs to be measured so you can get the right key. I don't have the chart on my cell, but EBay key sellers do. Then get a bonded locksmith (or dealer if you wish) to cut you a new one from your VIN (not a copy from an existing worn key). IIRC I paid around $100, but that's living in Canada.

ArmchairArchitect

Once you have the resistance of the chip measured with your multimeter, go on ebay and look up GM and Chevrolet blank "VATS" keys (double-sided, picture should look like your existing key). ~$10 for an OEM key blank shipped.

Then take the blank key to your Chevy dealership- they'll either cut it for you for free (which they did for me) or charge you a few bucks.

Here's the correct VATS table once you measure your resitance, to lookup the VATS #:

C5inWV

My local locksmith /key store had it in stock. It was less than $30.

Grandpa1

I recently purchased a 2003 Vert with just one key. Dealer said bring the VIN and they could make me a new key. Took the VIN in and got the key the next day.
$34.00.
Any GM dealer, not just Chevy.