1999 Silverado Security Light and Won’t Start

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3 Comments on "1999 Silverado Security Light and Won’t Start"

4 months 20 days ago

2004 trailblazer can’t replace my gas pedal sensor .the man said my computer needed up date help please
The codes read PO171, PO128, P2138, PO132. Help help

4 months 16 days ago

Yes, there is a computer software update for a few of the throttle codes. Sometimes that will fix it, but not always. P0171 is lean condition- maybe a vacuum leak. P0128 is thermostat below operating temperature. See this link for more info…
Trailblazer thermostat

1 year 7 months ago

300-500 bucks to replace a ignition cylinder- wow that guy is an idiot
it takes less than 15 minutes to replace the cylinder and there is no reprograming as the unit is all mechanical