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Home >> GMC >> 1997 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System - Remote >> Testing >> Transmitter Functions Do Not Operate

Transmitter Functions Do Not Operate

  1. If condition of batteries is unknown, replace transmitter batteries with fresh batteries. If transmitter now operates, system is okay, If system still does not operate, go to next step.
  2. Connect jumper wire between DLC connector terminal No. 8 (Black/White wire) and ground. If all power doors lock and unlock, go to next step. If all power doors do not lock and unlock, go to step 4).
  3. Leave jumper wire connected. Operate a known-good transmitter by pressing a single button once. Disconnect jumper wire. If known-good transmitter now operates all remote functions, replace inoperative transmitter. Reprogram replacement transmitter. See PROGRAMMING PROCEDURE  . If known-good transmitter does not operate all remote functions, replace keyless entry receiver. Reprogram replacement keyless entry receiver.
  4. Connect self-powered test light between DLC connnector terminal No. 8 (Black/White wire) and ground. If test light comes on, repair short to ground in Black/White wire and reprogram keyless entry receiver. If test light does not come on, go to next step.
  5. Connect test light between keyless entry receiver connector terminal "E" (Orange wire) and ground. If test light comes on, replace keyless entry receiver. Reprogram keyless entry receiver. See PROGRAMMING PROCEDURE  . If test light does not come on, repair open in Orange wire. Reprogram keyless entry receiver.
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