It means that the temperature is below 20 degrees Fahrenheit.
one of the lights is not working
Random cylinder misfire
System to rich (bank 2)
B1023: DDM(driver door madule) Integral switch malfunction
Trouble code P0300 means:Random/multiple cylinder misfire detected
You have a severe misfire. See related questions below.
Do you mean how to tell if it is broken?
it just means the trim-level. that it is leather seated and heated seats. LT is better than LS.
Assuming you mean the engine oil drain plug, a 15mm wrench should do the job.
You need to replace your booster.
Trouble code P0171 means: Fuel Trim System Lean (Bank 1)
Never heard of a "front wheel modulator" on a S-10 Blazer. If you mean hub, it is the wheel bearing assembly. If you meant 4x4 shift solenoid then depends if it is shift on the fly or not. The ABS has a modulator, but not sure what you mean.