Question about 2000 GMC Sonoma Extended Cab
This is the code that came up on the machine that reads the codes. I need to know what this means. The code book that I have said that I had to find out from another source.
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
Some times rpms go from 1800 to 2300 45 to 50 mph after truck is warm 2000 gmc sonoma 2.2 700r4 trans
Posted on Jul 22, 2009
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Posted on Jul 14, 2009
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Posted on Jan 02, 2017
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