Another busted Trailblazer 251 with only 290 hours! Anybody have bad PC2 boards?

[denwhit]

Just want to triple confirm, you do have the output contractor switch "ON" correct?

Both switches are in the up position.

[walker]

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I hope mine turns out to be that easy (cheap fix). What reading, voltage or resistance, showed the problem?

While while testing, I bumped a wire and it sparked. Just pull apart your molex connectors to check for corrosion, and loose ones will make themselves apparent.

[denwhit]

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While while testing, I bumped a wire and it sparked. Just pull apart your molex connectors to check for corrosion, and loose ones will make themselves apparent.

thanks for that

[denwhit]

Fixed it!

After getting good ohm readings across the diodes in the bridge rectifiers, yet getting screwy voltage readings, I just decided to replace them both. That worked! She's back to performing like a new one. I guess the lesson is that when the actual current hits those rectifiers, the real test begins. Anyway, my thanks to everyone who participated with help and advice.