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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 102 (Automatic Transmission Diagnosis - 4L60-E) >> Diagnostic Tests >> DTC P1870: Transmission Component Slipping >> Diagnostic Aids

Diagnostic Aids

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A TFP manual valve position switch malfunction could set DTC P1870. Ensure final drive ratio matches PCM calibration. Bronze material found in transmission oil pan may indicate stator shaft bushing wear. Inspect stator shaft and input (turbine) shaft for damage.

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