I have looked and I do not see the alarm system in this truck. Did the dealer install it? Here are the wiring diagrams I have for it:
THEFT ALARM RELEARN PROCEDURE
Theft alarm relearn is necessary whenever battery is disconnected or dead battery is boosted. If battery is connected or boosted without conducting relearn procedure, alarm system will enter power-up mode and vehicle will not start.
Before reconnecting battery or connecting booster, insert door key into driver side door lock. Connect battery cable(s) and cycle driver side door lock once. Vehicle may now be started. On some models, horn will sound 3 times to indicate theft system is activated.
NOTE: If Single Board Engine Controller or Powertrain Control Module (SBEC or PCM) is replaced, theft alarm system will not operate for minimum of 20 engine starts.
Check out the diagrams (below). Please let us know what you find.
Images (Click to enlarge)
Friday, September 7th, 2018 AT 1:55 PM