Are you sure? If not my spark plugs aren't getting any spark would that be a bad coil?Are you sure? If not my spark plugs aren't getting any spark would that be a bad coil?
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Who told you that one ? Module ignition modulator 2003 Chevy Tahoe ! No such thing! Your best bet would be to take your vehicle to a qualified repair shop .
The electronic ignition (EI) system is responsible for producing and controlling a high energy secondary spark. This spark is used to ignite the compressed air/fuel mixture at precisely the correct time. This provides optimal performance, fuel economy, and control of exhaust emissions. This ignition system consists of a separate ignition coil connected to each spark plug by a short secondary wire. The driver modules within each coil assembly are commanded ON/OFF by the powertrain control module (PCM). The PCM primarily uses engine speed and position information from the crankshaft and camshaft position (CMP) sensors to control the sequence, dwell, and timing of the spark.
? 24:15 https://www.youtube.com/watch?v=Jo76ylqgUR8
Dec 22, 2012 - Uploaded by Skizzot7
This is how to fix intermittent ABS and Brake dash lights on all Chevrolet ... That board is rather robust and is installed external to the vehicle in a location that sits .... I took the module out of a2002 Sierra and it is engineered with no T10 .... ABS Sensor and Harness 2000-06 Chevy Suburban Tahoe GMC ...
The fuel pump control module is controlled by the ECM - engine control module , Possibility of DTC'S stored ! You need to take to Chevy Dealer !
The engine control module (ECM) supplies voltage to the fuel pump control module (FPCM) when the ECM detects that the ignition is ON. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in Crank or Run. While this voltage is being received, the FPCM closes the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
You dont see a resister because around the year 2000 they switched it up a little bit. The key now has a hidden transponder embedded in the keys head. This sends a constant signal to the ignition. The ignition then sends this signal to the Theft Deterrrent Module. The theft deterrent module is what allows the starter to start, or the fuel injectors to work. The hard part is finding which part has failed. Go to this link for info, pics, and a detailed explanation of how this works along with some DO IT YOURSELF solutions.
Verify where you are losing spark. Check at the end of the plug wires and at the coil. If you have nothing from the coil then either the coil is bad, ignition module is bad, or the crank sensor is bad. If you have a code puller or can get one it will tell you if crank sensor or ignition module is the problem.
Its a z71 old body style
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