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Re: GM DTC 1870
Posted to Transmission Forum on 8/16/1998 3 Replies

The converter 'went out'? The question the dealer should be asking is 'why the converter failed'? Disassembly of the valve body is paramount. The technician will find scored valves. The valves become scored due to debris left in the bores after the machining p... Login to read more.

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