President Donald Trump has granted a full and unconditional pardon to Wyoming diesel mechanic Troy Lake, a Cheyenne man convicted last year for tampering with vehicle emissions systems.

Lake, 65, had served seven months of a one-year federal prison sentence for modifying and removing emissions controls on diesel engines — a practice outlawed under federal clean air laws.

The longtime mechanic, who ran Elite Diesel Service near Cheyenne, was also fined $52,000. He’d been serving the rest of his sentence at home under electronic monitoring when the call came Friday: he was free.

The Lake family has been under federal scrutiny since 2018, when Environmental Protection Agency agents raided their shop, accusing Troy of performing “deletes” — removing or bypassing pollution-control systems in

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