can't think of a case where a manual would throw codes. Staying in first sounds like "limp home" mode for an A/T.
The body shop should have disconnected the battery before welding the understructure on. If so, there is a procedure for transmission relearn that should be performed. Try that first.
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2004 Dark Plum Base with windows tinted, cabin filter, silencers removed, fog lights, 18\'s, all Red taillights, Blaine\'s struts, modesty cover, color-matched center dash, 06 rear bumper
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