LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2004 >> Sonoma >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Automatic Transmission Diagnosis (DTC P0218 -- DTC P2761) - 4L60-E/4L65-E) >> Diagnosis >> DTC P0894 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

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 +50 RPM.

When the PCM detects excessive TCC slip when the TCC should be engaged, then DTC P0894 sets. DTC P0894 is a type B DTC.