What is trouble code 12 on a GM car?
Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECMdetects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.
What does GM code 12 no distributor pulses mean?
GM Code 12 No Distributor Pulses. Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECM detects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.
What does trouble code 12 mean on an ECM?
Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECM detects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.
When to use code 12 in service mode?
When the ignition is ON and the ECM detects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp. Code 12 is also used when the ECM is in Diagnostic mode (ALDL Terminal B grounded, key On, engine Off) to signal the beginning or end of a so-called ‘diagnostic sequence’.
What kind of truck is a GMC Sonoma?
It is a four door truck, but is much smaller than a lot of other pick up trucks, which makes it easy to park and maneuver while still offering the utility of a truck bed. During a meteor shower I took the truck out to a scenic lake and filled the bed up with blankets and pillows to watch the shooting stars.
Is there a spark on my 1998 Sonoma?
Put new coil on with again no spark. Checked out this forum and went out wiggled white wire with black stripe and whoooom started right up. Bad connection right at the plug in on coil. About to go out and fix this thing. Only 202,000 miles on tis 1998 sonoma 4×4, just keeps going! Thanks for the tip!!!!!! 20 people found this helpful.
How many spark plugs are in a GM 2.2L?
Ignition System: As you’re already aware, the ignition system on the GM 2.2L is composed of an ignition module, two ignition coils (that feed two cylinders with spark simultaneously), 4 spark plug wires, and 4 spark plugs. If any one of these goes bad (and they do), then you’ll end up with a misfire condition.
Do you need a spark plug for a Chevy S10?
NOTE When performing the following tests, the vehicle’s battery must be fully charged. WARNING Never crank the engine or turn the ignition switch on with a high-tension spark plug wire or ignition coil wire disconnected.
Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECMdetects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.
Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECM detects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.
GM Code 12 No Distributor Pulses. Trouble Code 12 is a special case code that is not logged into the ECM’s Non-Volatile Memory (NVM) when detected. When the ignition is ON and the ECM detects no ignition reference pulses coming from the ignition module, it illuminates the Service Engine Soon lamp.