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P1870 Diagnostic Trouble Code Discussion for November 2008

Transmission Component Slipping

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Trouble Ticket Help Requests for DTC P1870
Help Request Posted
1997 GMC Yukon SLE 5.7L Pinging / SparkKnock VIN: 1GKEK13R3V
P1870: Transmission Component Slipping. ... problem... Note: MIL lamp was disabled (NOT HERE!) and is not functioning! 1)Checked for codes found; P1870 TCC slip & p0300... Scan data shows aprox.250-290 rpm tcc slip (high gear with 90% duty cycle at 55 mph) s...
November 26, 2008