0
That code will flash whenever the diagnostic terminal is grounded with the ignition turned on and engine is not running. If there is additional trouble codes stored in the ECM they will appear after code 12 has flashed 3 times. If you have no other codes that flash. Then code 12 means system is okay and no codes presant.
What else can I help you with?
How do you fix the fuel sending unit on a 1992 Chevy silverado k1500?
on mine, I had to drop the gas tank.
98 Chevy silverado k1500 transmission code p1870 how do you fix the problem?
Rebuild trans. Pay someone to do it too.
Why does my automatic transmission in a Chevy K1500 4x4 truck slip in Drive or Overdrive?
If it is slipping in those gears then it is time for a rebuild. no EASY FIX
How do I fix 1997 k1500 Chevy truck blower that only works on high fan setting?
The blower motor resistor pack is defective. Replace it.
How do you fix the P1133 code in a 2000 Chevy Venture?
change your o2 sensor
How do you fix code 420 on 2000 Chevy s10 pickup?
replace cat
How do you fix a code P0128 on a 2002 Chevy s10?
Start with replacing the thermostat.
How do you fix the P1133 code in a 1996 Chevy blazer?
I've got a better question, why is this question in the Chevy venture forum ?
How do you fix code p0420 on your Chevy prism?
you stick some plastic explosives on it and run
How do you fix code P0171 on a 2000 Chevy Prism?
Start with looking for a vacuum leak.
Will a 1996 transmission fit in a 1992 Chevy z71 4wd?
i have a 1996 z71 my tranny bad in it i have a 1992 z71 tranny will it fix there both 4x4
What type of socket fits into the crank position sensor of a 95 Chevrolet Blazer k 1500 I broke mine need a quick fix.?
Sorry I meant knock sensor on 1993 Chevy blazer k1500
