Question about 2010 GMC Terrain
Control Modual Code 7E8..Engine What does this mean?
Posted by Anonymous on
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Posted on Jan 02, 2017
you jave a biggie here.
here is some info
The Powertrain Control Module (PCM) monitors the difference between engine speed and transmission output speed. In D3 drive range with the TCC engaged, the engine speed should closely match the transmission output speed. In D4 drive range, with the TCC engaged, the TCC slip speed should be -20 to +60 RPM .
When the PCM detects excessive TCC slip when the TCC should be engaged, then DTC P1870 sets. DTC P1870 is a type B DTC.
CONDITIONS FOR RUNNING THE DTC
Posted on May 16, 2008
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