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Chevrolet Avalanche
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Help needed

Old May 11, 2025 | 7:12 AM
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I have a 2008 Chevy avalanche. I am having issues with it after we received a lot of rain. I’m experiencing intermittent starting issues. I’m also experiencing my cluster going crazy. I have a bunch of lights on the dash and messages telling me to service suspension, tire pressure sensors, ect…. I was wondering if anyone else had the same issues or close to the same issues. It will not show what gear that the trans is in.

It showed a CEL on and when I plugged the scanner in I hade no communication according to my scanner

I also I have roughly 13.5-13.8 volts at the battery and to my fuse panel.

was wondering if this has happened to anyone else and where I should start
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Old May 13, 2025 | 11:23 AM
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Have you had the battery checked? Also check the battery cables for good connections and for corrosion at both ends.
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Old May 14, 2025 | 5:29 AM
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I had the battery load tested and it checked out. Everything seemed to be good on that end. I believe I’m having Ecu issues. I went to a shop and got a ground distribution diagram. That will be my next step
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