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Home >> GMC >> 1998 >> Yukon RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) >> Description >> Solenoids >> Shift Solenoids 1-2 & 2-3

Shift Solenoids 1-2 & 2-3

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Transmission is shifted up or down by 2 electric shift solenoids. Both solenoids are located on valve body. See Figure. Ignition power is supplied to each solenoid by transmission fuse. Solenoid 1-2 controls hydraulic pressure to 1-2 and 3-4 shift valves. Solenoid 2-3 controls hydraulic pressure to 2-3 shift valve.

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