could be many reasons but the first one that comes to mind is a bad fuel pump.
Fuel pump could be possibly getting weak. Happened to my blazer.
A broken timing chain is a possibility.
Several things a weak battery , the terminals on the battery are not tight enough or a bad starter.
If the vehicle is running you should see between 13.5 volts and 14.5 volts. If the engine is off, you should have at least 11.5 volts. Voltage alone is not enough to determine the "health" of a battery. If a battery may be the cause of a problem then have it load tested by your local parts store or automotive shop.
There are several things that can cause your 1995 Chevrolet Blazer to shake when accelerating. Bad spark plugs and spark plug wires can cause the vehicle to shake. Tuning up the engine may eliminate the problem.
thae catalitic converter is pluuged
Corrosion. Check connection at the module for corrosion.
There are several things that can cause shifting problems in your 1989 Chevrolet Blazer transmission. The most common cause of shifting problems is a lack of transmission fluid. Broken shifting forks can also cause transmission shifting problems.
A blown fuse is the most common cause for the 1996 Chevrolet Blazer sheet and air conditioning not working. The fuse box can be found in the engine compartment.
I wouldn't recommend it. You could cause internal damage. I have no idea why you would do this anyway.
It is possible that the wiper pulse board is defective.
Fix the cause of the codes, and clear the codes with a scanner or by unhooking the battery.