only code 12
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3X00-Modified
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- Location: Brooklyn CT
Re: only code 12
Google search is your friend...
http://www.troublecodes.net/gm/
12 means your in diagnostic mode. Is the SES light even on?
http://www.troublecodes.net/gm/
12 means your in diagnostic mode. Is the SES light even on?
Re: only code 12
12 just means that the ECM is in diagnostic mode -essentially it is just acknowledging your jumper-wire is in place. That means you have no trouble-codes. OBD1 is not the best at realizing there is a problem with the engine.
1989 SuperCharged 3800 Srs-II (First)Six-Speed GTU
1990 Turbo 3.4 5-Speed T-Type
1990 4.0L 4-Cam 32-Valve V-8 5-Speed Indy GTi (Project)
1990 Stock(!) 3.1 MPFI Auto Indy
1995 LA1/L82 4T60E Z-26
1995 3.4 DOHC Turbo 5-Speed Z-26
1990 Turbo 3.4 5-Speed T-Type
1990 4.0L 4-Cam 32-Valve V-8 5-Speed Indy GTi (Project)
1990 Stock(!) 3.1 MPFI Auto Indy
1995 LA1/L82 4T60E Z-26
1995 3.4 DOHC Turbo 5-Speed Z-26