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Re: 2000 Blazer service 4x4 system warning light
Ok, the clicking is the 4x4 relay, that is normal.
What you are seeing is the failed encoder motor not properly switching the transfer case.
This is common with most electronic 4x4 Blazers and jimmys.
I suggest you replace it. It is fairly easy to swap in.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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