According to the related links below, intermittent wipers history of bad module under the hood upper driver side. Cost to replace just the part $80. or so. My mechanic soldered the wires back in place in module and saved me a bundle.
Additional...
If you are having wiper problems intermittently, you may have a loose connector at the wire harness-to-wiper motor interface. My 98 Blazer did after 8 years. Under the hood, at rear of engine compartment, near center, is the connector. Push it back in tightly, then put a cable tie/zip tie/ Ty-wrap on it and tighten carefully. Putting a wire around it and twisting the wire will last a little while, and then fail in a pouring rain like my first repair attempt. The cable ties won't creep loose.
You could also go to your local Chevrolet dealer and ask them to check your VIN, they will tell you if your car has any recalls on it, not only the wiper. They will do it for free.
Additional...
Everything above is correct, but also note that GM had a big issue with wiper motors in all the trucks in that era, including the blazer, that all you needed to do is ground the motor with a separate wire (I usually did it from the cover bolt to the mounting bolt) and issue would go away. I know that some of them also had an issue with the PC board (Wiper motor pulse board) inside the motor that would get corroded and is a super easy fix, you can buy a new PC board for about $20, it is about 4-6 screws and it is done.
under exaust manifold on passenger side
I know of none on the internet and May BE IN A FISCHER BODY BOOK from CHELTONSAUTOREPAIRBOOKS.COM
There is a problem in the distributor. Either the pickup coil or the ignition module are defective. It may be cheaper to purchase a remanufactured distributor.
For a 1991 Chevrolet Blazer with 5.0L, 5.7L and 7.4L engines the firing order is 1-8-4-3-6-5-7-2 The distributor rotation is clockwise. Here's a web page with a wiring diagram: http://www.chuckschevytruckpages.com/underhoodwiring.html
Look against the firewall behind the right front wheel. Sometimes it is hard to see. Be careful unplugging it as the evaporator is just above in the case.
How do you Change Windshield Wiper Blades on a 2004 Chevrolet Trail Blazer?
It is underneath the washer reservoir.
If a windshield wipe arm is loose on a 2002 Chevrolet Blazer, it likely needs to be replaced. It probably has a broken connection.
Check your fuses.
Almost all parts super stores will do the replacing for you if you buy the blades yhere.
The exploded view of a 1996 Chevrolet Blazer IFS can be found in the service manual of the vehicle. If you do not have theÊservice manual, it can be obtained from the nearest Chevrolet dealership.
The 1983-1994 Chevrolet Blazer S-10 (sometimes called "Compact Blazer") takes 16" replacement windshield wiper blades on both sides front. The 1989-1994 models also take a 14" rear wiper blade.
Where is the fuel filter located on a 1990 chevrolet blazer?
how do i replace a heater core in a 2001 Chevrolet blazer
Windshield
yes
The power of the engine of the Chevrolet blazer 8cyl 1968 is 435 hp