Question about 2004 Chevrolet Express
At a straight idle or even in motion the 1500 express keeps shutting off, the security light keeps coming on. i have tried disconnecting the battery but that didn't seem to work. please any advice would be great. Thanks!
The security light comes on or stays on when the module does not "see" the correct chip in the key.
Normally the system only works when you crank the engine, not after it is running. So if the light is coming on after the engine is running, and the engine also quits, I would look for an electrical problem with the key switch or the computer.
Posted on May 09, 2013
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Posted on Jan 02, 2017
Start with fuel system. Listen for fuel pump humm at fuel tank No humm check wiring to pump for power. Then check for spark at plugs and wires. Remove wire from coil and hold near engine and see arch when you crank. No arch. Replace ignition Modular inside distributor cap or cap or rotor
Posted on Feb 04, 2010
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