paperclip code reader

[cnogood]

Ok some1 said I can read da flash codes with a paper clip. I have a 89 rs. Can some1 walk me through da steps how 2 do dis with a paper clip. Thnx

[FormulaLT1]

GM Trouble Code Info

Accessing Trouble Codes

• Turn ignition switch to OFF position
• Locate Data Link Connector (DLC), see image below.
• Jumper the A&B terminals(a paper clip or a jumper wire work ok)
• Turn Ignition switch to ON position.
• Count the flashes on the "CHECK ENGINE" or "SERVICE ENGINE" light.
• FLASH, pause, FLASH, FLASH = code 12
• NOTE: Some 94 & 95 models do not have the B terminal. In which case a scanner is required.
• NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner.
• All vehicles after 96 are OBDII,and require a scanner to access them.

12 Pin DLC

A - Ground

F - TCC

B - Test Terminal

G - Fuel Pump

C - Air Injection

H - Brake Sense Speed Input

E - Serial Data

M - Serial Data

[Viper_Storm]

lol, you can search for ODB I and it should bring up a big ass list of ODB I codes, some dude made both (ODB I & ODB II) lists and they are here, may not be 100% complete