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.
SOURCE: 2000 chevy express 1500 van having starting issues
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
SOURCE: 1998 Express van Turn signals
You loose all turn signal lights outside? Do they blink on the dash?
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