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Any Caterpillar Mechanics Here? CAT ET Question

Gary852

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I’m looking for suggestions on CAT Caterpillar ET packages.

I recently bought a 2001 Chevy C6500 rollback equipped with a CAT 3126B engine. While it runs fine for local driving, it struggles on long trips or highway travel. Additionally, the check engine light flashes every five seconds while it's running. I’ve attempted to retrieve the codes using the cruise control method, but nothing happens, which may indicate that the cruise control switch is malfunctioning or that there’s another issue at play.

I did manage to reset the computer port, but this only seemed to slow down performance, and the code is still present. I’d like to keep my budget under $1,000, so I’m open to used or cloned setups. Any recommendations? Thanks!
 
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