Hey y'all new to Blazer's (not 4x4s), could definitely use some guidance(electrical s
#11
I would suggest pulling the alternator off and having it tested. I know Advance Auto Parts can bench test them, I'm sure most all parts stores can. I wander if the alternator catastrophicly failed causing the grinding noise, then at the same time the regular in it failed and sent a voltage spike through the electrical system and knocked out the PCM... Would suck to replace the PCM only to have a fresh one fry as soon as you started the truck because the alternator spiked the voltage again...
Just a thought
Just a thought
#12
That's good advice, my buddy suggested the same, so I tried that. The alternator is fine, so I'm not sure what else to do. Any other ideas?
#13
I make sure all my grounds are less than 5 ohms to chassis ground before I spend money on electrical parts. I'm wondering if you lost an engine to chassis or pcm ground that could throw all those codes and not blow a fuse. Maybe someone knows what voltage signal causes those individual codes and combined they could point us toward the problem.
#14
If you find out it's a bad pcm. Google flag ship one.com just gone a pcm from them a month ago just send them your vin an 88 bucks an they send you a plug n play unit life time warranty
#15
I am thinking so too! But did something cause it to fail? Probably a try and see. You can get used PCM through Internet that is programmed to your VIN. They typically offer a return policy that would only cost you maybe $20 + ship to find out.
Last edited by LesMyer; 10-31-2018 at 08:52 AM.
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