It will only allow you to start the engine in park or neutral.
You do not ,you replace it .
There isn't a neutral safety switch but a clutch switch that is located under the dash on the clutch pedal.
JEFF TAYLOR
Need to know if it is standard or automatic and why.
If ignition problems still persist after replacing the neutral safety switch on a 1995 Chevy S10 check the starter. A broken starter will result in a car which will not be able to turn over the engine.
If it's a manual transmission then it should be on the firewall right behind the clutch pedal.
If it starts up in any gear, manual transmissions does not have a neutral safety switch.
On my 2002 S-10 truck, the neutral safety switch (also called the Park Neutral Position Switch, or PNP switch) is located on the driver's side of the transmission. It is a black box that has 2 electrical connections going into it. There is a very good chance that it is in the same location on your 2000 Blazer. Hope this helps.
Automatic transmission, on the left side (drivers side) of the transmission. Standard transmission, on the clutch peddle assembly.
Standard or automatic transmission??? In most vehicle situations the switch unscrews out of the likage side of the transmission.
The switch is on the left sie of the transmission just in front of the speed sensor for a manual transmission.
Bad neutral or clutch safety switch? Bad starter? bad starter solenoid?