PROM for '89 6 speed

[wbland]

I may need to replace the PROM. GM , I understand, has discontinued them, and I have had no luck on the internet with the usual suppliers. Can anyone recommend a source? Thanks!

 

[vetteoz]

Price on a OEM chip when they were last available was $400+
PCMfor less ( and other tuners ) will do you a custom chip for $150

http://www.pcmforless.com/index.php?option=com_wrapper&Itemid=316

You can make any changes you want like
turn fans on earlier , delete the VATS ,change torque convertor lock up speed (to prevent that low speed lockup that some find annoying) ,etc

 

[wbland]

I may need to replace the PROM. GM , I understand, has discontinued them, and I have had no luck on the internet with the usual suppliers. Can anyone recommend a source? Thanks!

Thanks! I'll give it a try.