This is a '97. I have some welding to do, I want to unplug the PCM. Anything else I should unplug? I plan on unpluging the engine control module, the ignition module and disconnect the battery.
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This is a '97. I have some welding to do, I want to unplug the PCM. Anything else I should unplug? I plan on unpluging the engine control module, the ignition module and disconnect the battery.
Probably want to unplug the BCM and EBCM.
OK but I really need to know where these things are located. Im very fimiliar with H body and not so much with W body and not this car. It is my daughters.
BCM - brake control module ?
EBCM ?
Ignition control module is under the coil packs.
PCM is in the bottom of the air box.
BCM (body control module) is above the parking brake (well, it is on my Impala).
EBCM (electronic brake control module) is attached to the ABS modulator, in the vicinity of the driver side strut tower.
Why not just completely disconnect the battery, both neg and pos?
You should be fine if you disconnect the ground on the batter, then none of the current from the welder can travel threw the chassis to the electronics.
You can still get continuity through the alternator->block->chassis ground route.
Depends on what kind of welding. If it's tig, I would be disconnecting everything electronic, including the battery.
It says right in this post ^ (my last post) and what Im welding on doesnt matter, only that I am welding. Everything goes to ground and welding sends X amount of amperage to ground. From what I found today by asking various mechanics and bodymen I know the only thing that needs be unpluged is the battery.
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