2003 Silerado 1500 4WD check engine light
April 25th, 2012, 9:09 PM
#3
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Thanks. I do want to know when there is an issue with my truck. My question was a concept inquiry. My egg head brain was just wondering if there ever were a problem with the system, not a component, could the system be deactivated? Thanks for the reply.
April 25th, 2012, 10:00 PM
#4
You're quite welcome.
The "system" is the PCM that controls practically everything. The PCM turns on the check engine light when it detects an emission control related malfunction. The way things are with modern vehicles, emission controls are integral to the PCM logic.
The "system" is the PCM that controls practically everything. The PCM turns on the check engine light when it detects an emission control related malfunction. The way things are with modern vehicles, emission controls are integral to the PCM logic.
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