what is a p1870 code on s10 and how to fix it

Asked by May 16, 2017 at 09:56 AM about the 1998 Chevrolet S-10 LS Extended Cab RWD

Question type: Maintenance & Repair

1 Answer

935

You'll need a scan tool that monitors transmission live data. When the TCC is locked up, the slip RPM should stay 100 RPM or less. If it's over revving it may need a transmission.

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