Every time it's wet, I run into this problem. My Blazer won't crank, or when it does crank, it won't catch. I know it has something to do with the ignition system because I had it looked at, but I don't know exactly what the problem is and neither does the guy I had it looked at by.
How do you get rid of moisture in your Ignition Coil? on 1999 Chevrolet Blazer
by thelegitnerd in Schererville, IN on January 28, 2013
ANSWER by ziptie12 , January 28, 2013
Try a shop that works on autos. The no-crank symptom has nothing to do with the coil.The no-'catch' may have something to do with the coil if the no-start is due to no-spark.
ANSWER by globalhelper , January 28, 2013
try dielectric grease and it will keep moisture out