Clearing OBD1 trouble codes on a 1990-95 C4 Corvette

How to clear DTC diagnostic trouble codes on a 1990-1995 C4 Corvette.
Model year1990 1991 1992 1993 1994 1995 OBDI OBD1 trouble codes
Not OBD2. This is OBD1 Check Engine Light CEL codes.
#corvette
#codes #obd1

[@wyattulmer2569]

i can’t get my 1994 to show anything with these pins jumped. i know im making a connection in port. what should i do ?

[@thinkgolden]

I just tried today and had the same issue. Screen is blank

[@thinkgolden]

I just found the answer. In 1994 the pins are number 4 and 12

[@PETEFLOYDSINGS-xs7pb]

@@thinkgolden are they numbered or lettered? I don't see either. Thanks.

[@EugeneStansfield-em8eg]

i have a 1990 c4 base. when i short pins only my check eng light flashes codes? your film has numbers coming up on the digital display? why does mine? thank you!

[@gregs_garage]

You may have 1989 style

[@Vivianauxito]

Are you open to doing a product review on AuTo LED?

[@gregs_garage]

sure I can do that

[@gregs_garage]

Send them over

[@Vivianauxito]

@@gregs_garage Can I send some lights for your 1991 Chevrolet Corvette? If that’s doable. could you please send me the mailing address and phone number via email or Instagram?

[@devotedanaheim1575]

@@gregs_garagewhat if my security light still on after deleting codes

[@gregs_garage]

GM security systems from this era are a pain!
@@devotedanaheim1575

[@1986Cochran]

My 91 vet says “door ajar “ how do I fix this?

[@gregs_garage]

Door switch?

[@TheMrmmkkpro]

1995 lt1 , this dont work for this car

[@gregs_garage]

Weird. Do you have obd2?

[@dkmcnuggy3038]

@@gregs_garageI’m pretty sure they started using obd2 in 1995+ corvettes