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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Specifications >> Transmission Range Switch Logic

Transmission Range Switch Logic

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Transmission Range Switch Logic(1)

Gear Selector Position Signal A Signal B Signal C Signal P
Park (P) LOW HI HI LOW
Reverse (R) LOW LOW HI HI
Neutral (N) HI LOW HI LOW
Drive 4 (OD) HI LOW LOW HI
Drive 3 (3) LOW LOW LOW LOW
Drive 2 (2) LOW HI LOW HI
Drive 1 (1) HI HI LOW LOW
(1) HI = Ignition voltage; LOW = 0 volts.