98 savana p1780 code
ctanori
12-15-2007, 09:07 PM
the "service engine soon" light came on.
I checked the code and is p1780.
but I didn't notice any problem on the transmission.
any help?
I checked the code and is p1780.
but I didn't notice any problem on the transmission.
any help?
maxwedge
12-16-2007, 04:15 PM
You mean p1870, common code, usually caused by the pcm recognizing a slippage condition during tcc lock up, caused by a worn valve body bore for the tcc valve, the pcm boosts pressure to compensate.
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