2005 Chevy Silverado 3500. Automatic headlights turn on, the engine dies. Turn it off, it still keeps running, even when the key is pulled out.cannot find the wiring issue..... ANY HELP??

Did you clear the code's too see if all the same code's come back ? You have a few U code's , these are communication network code's . solving these may take care of the rest . There is a lot of information in factory service repair manual for all these code's . More then i can supply here . Your best , get service info from alldata or something like that .http://alldatadiy.com/?affiliate_id=9377...

This would supply all diagnostic's for all the code's . Testing power & ground circuits to all the control modules . Testing network wiring etc... Did you clear the code's too see if all the same code's come back ? You have a few U code's , these are communication network code's . solving these may take care of the rest . There is a lot of information in factory service repair manual for all these code's . More then i can supply here . Your best , get service info from alldata or something like that . http://alldatadiy.com/?affiliate_id=93770&click_id=2401902015 This would supply all diagnostic's for all the code's . Testing power & ground circuits to all the control modules . Testing network wiring etc...

Circuit Description
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification (ID) number of the module which sent the message for state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an ID number is learned by a module, it will monitor for that modules node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned ID number for 5 seconds, a DTC U1---. --- is equal to the 3 digit ID number of the module.

The control module ID number list provides a method for determining which module is not communicating. A module with an internal class 2 serial data circuit malfunction or which loses power during the current ignition cycle would have a lost communication DTC set by other modules. Use the control module ID number list in order to determine which module is not communicating and the lost communications with -- - diagnostic table in order to diagnose the malfunction. When no message is detected from a learned ID number for 5 seconds, a DTC U1--- is set.

The Control Module ID Control Module
ID Number

Powertrain/Engine Control Module (PCM/ECM)
016

Regulated Voltage Controller (RVC)
022

Hybrid Control Module (HCM)
023

Transmission Control Module (TCM)
024

Transfer Case Shift Control Module (TCSCM)
026

Electronic Brake Control Module (EBCM)
041

Rear Wheel Steering Control Module (RWSCM)
048

Body Control Module (BCM)
064

Inflatable Restraint Sensing and Diagnostic Module (SDM)
088

Instrument Panel Cluster (IPC)
096

Driver Information Center (DIC)
097

Radio
128

Audio Amplifier (AMP)
129

Remote Playback Device - CD Player (CDX)
130

Digital Radio Receiver (DRR)
137

Communication Interface Module (OnStar®)
151

HVAC Control Module
152

Rear Seat Entertainment (RSE) Assembly
154

Driver Door Module (DDM)
160

Passenger Door Module (PDM)
161

Memory Seat Module (MSM)
166

Rear Seat Audio Controller (RSA)
167 Circuit Description Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification (ID) number of the module which sent the message for state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an ID number is learned by a module, it will monitor for that modules node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned ID number for 5 seconds, a DTC U1---. --- is equal to the 3 digit ID number of the module. The control module ID number list provides a method for determining which module is not communicating. A module with an internal class 2 serial data circuit malfunction or which loses power during the current ignition cycle would have a lost communication DTC set by other modules. Use the control module ID number list in order to determine which module is not communicating and the lost communications with -- - diagnostic table in order to diagnose the malfunction. When no message is detected from a learned ID number for 5 seconds, a DTC U1--- is set. The Control Module ID Control Module ID Number Powertrain/Engine Control Module (PCM/ECM) 016 Regulated Voltage Controller (RVC) 022 Hybrid Control Module (HCM) 023 Transmission Control Module (TCM) 024 Transfer Case Shift Control Module (TCSCM) 026 Electronic Brake Control Module (EBCM) 041 Rear Wheel Steering Control Module (RWSCM) 048 Body Control Module (BCM) 064 Inflatable Restraint Sensing and Diagnostic Module (SDM) 088 Instrument Panel Cluster (IPC) 096 Driver Information Center (DIC) 097 Radio 128 Audio Amplifier (AMP) 129 Remote Playback Device - CD Player (CDX) 130 Digital Radio Receiver (DRR) 137 Communication Interface Module (OnStar®) 151 HVAC Control Module 152 Rear Seat Entertainment (RSE) Assembly 154 Driver Door Module (DDM) 160 Passenger Door Module (PDM) 161 Memory Seat Module (MSM) 166 Rear Seat Audio Controller (RSA) 167

• DTC P0054 HO2S Heater Resistance Bank 1 Sensor 2

• DTC P0060 HO2S Heater Resistance Bank 2 Sensor 2

The heated oxygen sensor (HO2S) must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by the ignition 1 voltage circuit through a fuse. With the engine running, ground is provided to the heater by the HO2S heater low control circuit, through a low side driver within the powertrain control module (PCM). The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM determines the temperature by measuring the current flow through the heater. When the heater is in the ON state, the PCM will pulse the heater OFF for a duration of 50 ms, once per second. When the heater is in the OFF state, the PCM will pulse the heater ON for a duration of 50 ms, once per second. The PCM calculates the heater resistance on a cold start. This diagnostic will only run once per ignition cycle. If the PCM detects that the heater calculated resistance is not within an expected range, DTC P0054 sets for HO2S bank 1 sensor 2, or DTC P0060 sets for HO2S bank 2 sensor 2. • DTC P0054 HO2S Heater Resistance Bank 1 Sensor 2 • DTC P0060 HO2S Heater Resistance Bank 2 Sensor 2 The heated oxygen sensor (HO2S) must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by the ignition 1 voltage circuit through a fuse. With the engine running, ground is provided to the heater by the HO2S heater low control circuit, through a low side driver within the powertrain control module (PCM). The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM determines the temperature by measuring the current flow through the heater. When the heater is in the ON state, the PCM will pulse the heater OFF for a duration of 50 ms, once per second. When the heater is in the OFF state, the PCM will pulse the heater ON for a duration of 50 ms, once per second. The PCM calculates the heater resistance on a cold start. This diagnostic will only run once per ignition cycle. If the PCM detects that the heater calculated resistance is not within an expected range, DTC P0054 sets for HO2S bank 1 sensor 2, or DTC P0060 sets for HO2S bank 2 sensor 2.

DTC P0449 Evaporative Emission (EVAP) vent Solenoid Control Circuit DTC P0449 Evaporative Emission (EVAP) vent Solenoid Control Circuit

DTC P0758 2-3 Shift Solenoid Control Circuit DTC P0758 2-3 Shift Solenoid Control Circuit

Way too much info. this doesn't include diagnostic step's . Way too much info. this doesn't include diagnostic step's .