2001 Chevy Tahoe 5.3 L vortec. Just put in brand new fuel pump fuel filter coil pack and brand new battery it's still no spark
No shuts of fuel not spark
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Hello. Yes, your Chevrolet's security system will 'shut-down' the ignition system; causing your truck to start but stop instantly. The truck 'thinks' it is being 'stolen' and will 'enable' it's security system to 'hamper' stealing it. Good luck and keep me informed; if you want to.
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no it doesn't , disables fuel injectors . If there is a problem with the anti-theft system it will start an run for two or three seconds an shut off . Has nothing to do with the ignition system .
Passlock™ System
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM)/vehicle control module (VCM). The message enables the fuel injectors.
Body Control Module
The Body Control Module (BCM) contains the theft deterrent system logic. The BCM reads the Passlock™ data from the Passlock™ sensor. If the Passlock™ data is correct, the BCM will pass theft. The BCM will then transmit the fuel continue password to the VCM/PCM.
During the tamper mode the vehicle may start. The vehicle will then stall. If the BCM receives the wrong Passlock™ data, the VTD will immediately go into the tamper mode. The tamper mode will lock-out the vehicle fuel injectors for 10 minutes. The SECURITY indicator will flash while the VTD is in the tamper mode.
If the Passlock™ sensor sends a correct password to the BCM when the ignition is in the ON position, the BCM will send a fuel enable signal to the VCM/PCM. The VCM/PCM will not disable the fuel due to any BCM message for the remainder of the ignition cycle.
personally i'd look at the crankshaft position sensor ,any codes stored in the PCM - engine computer ?
Electronic Ignition (EI) System Description
Ignition System Overview
The ignition system consists of the following components or circuits:
• The 8 ignition secondary wires
• The 8 ignition coils
• The 8 ignition control (IC) circuits
• The camshaft position (CMP) sensor
• The camshaft reluctor wheel
• The crankshaft position (CKP) sensor
• The crankshaft reluctor wheel
• The related connecting wires
• The powertrain control module (PCM
Thank you very much. I appreciate your help.
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