How does the glow plug work on a GMC Duramax?
Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre-glow times can be kept to a minimum for short wait to crank times and maximum glow plug durability. A DTC will set if there is a glow plug system fault. Turn the ignition ON with the engine OFF, and at room temperature.
What happens when the glow plug light comes on?
It depends on the nature of the problem. Sometimes, when the Glow Plug Light comes on, the engine in your vehicle will go into “safety” mode, in order to prevent any damage to the engine. If this should occur, you might perceive a drop in performance.
How often do glow plugs go out on Silverado?
I have a 2009 Silverado 2500HD 125k miles. I have had Glow plugs go out about every 3 months or so. It always seems to be the #5 and #8 most of the time. And the #8 is a PITA to get out. After reading it seems it is either a short, and I can see no cracks breaks, etc on the wire from the glow plug, or the glow plug controller.
How to clear service engine soon light 1990 to 2002 Chevy?
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Why is the service engine soon light coming off?
If there are emission trouble codes that are not that dangerous for your engine, you can try to erase the code to see if the engine service soon light is coming off. If the light gets off when you are deleting the codes, it means that any of the stored codes are causing the service engine soon light.
Why does my check engine light not light up?
If your Check engine light is ON, the easiest way to diagnose this problem is to always check your trouble code memory with an OBD2 scanner. The check engine light will not light up if there is a scheduled service as the service engine soon light.
Where are glow plugs located on the glow plug controller?
The glow plug supply voltage circuits located between the glow plug controller and the glow plugs. The glow plug diagnostic circuits are directly monitored individually by using a separate transistor to control current to each glow plug.
What happens to the glow plug when the engine starts?
The glow plug wait lamp may not illuminate during a warm engine start. If the engine is cranked during or after the above sequence, the glow plugs may cycle ON and OFF after the ignition switch is returned from the start position, whether the engine starts or not. The engine does not have to be running to terminate the glow plug cycling.
When to replace the glow plug in a Duramax?
With the igniting OFF and the affected glow plug disconnected, measure the resistance between the affected glow plug terminal of the glow plug and ground with a DMM for less than 1 ohm. If the resistance is more than 1 ohm, replace the affected glow plug.
How much does it cost to replace a glow plug on a GMC Sierra?
The average cost for a GMC Sierra 2500 HD glow plug replacement is between $234 and $339. Labor costs are estimated between $126 and $159 while parts are priced between $107 and $180. This range does not include taxes and fees, and does not factor in your specific model year or unique location. Related repairs may also be needed.
What does a glow plug on a Chevy do?
One per cylinder, a glow plug is a little heating probe which assists in igniting the fuel. Like a spark plug, they do not last for ever, and are designed to be easily accessible and replaceable.
What happens when the glow plug is disabled?
If the glow plug controller senses a problem in a glow plug circuit, the glow plug on the affected cylinder will be disabled and the glow plug controller will send an error message to the engine control module (ECM). If this condition exists, the DTC will set.