s34n

have you checked the ignition module for power?

BRay09

I was going to ask what wires to check for power, but i was almost certain that it was the module itself. What wires should have power when the key is on?

nauticstar87

Could have a bad ground off the battery.

MDTAHOE

What exactly happens when you turn the key? Does the engine crank and not start? Or do nothing? If it cranks then you need to look at things like ignition parts or fuel delivery. If it does nothing then you need to look at the starter circuit. Fuses, relays, ignition switch, battery and so on.

BRay09

The only thing that happens is the clock on the radio comes on. Thats it.

The battery is new with new ground from block to ground and ground to frame wires. I changed all of the relays in the engine bay and still nothing. I'm not sure where the starter circuit is on these newer chev's... Also, is the ignition switch your referring to the one that is by the key?

MDTAHOE

Starting System Operation
Notes

Voltage is applied at all times to the ignition switch from the IGN A fuse 6 through CKT 242 (RED). When the ignition switch is turned to the START position, voltage is applied to the CRANK fuse 8 through CKT 5 (YEL). From the CRANK fuse 8, voltage is either applied to the clutch pedal position switch (M/T) or the transmission range switch (A/T) through CKT 806 (PPL). When either the clutch is disengaged (M/T) or the transmission is in park or neutral (A/T), voltage is applied to the coil of the starter relay through CKT 1035 (PPL). Since the starter relay is permanently grounded at G105 through CKT 150 (BLK), the starter relay energizes.

Voltage is applied at all times to the starter relay contacts from IGN A fuse 6 through CKT 242 (RED). When the starter relay energizes, the starter relay contacts close, and voltage is applied to the starter motor solenoid. Since the starter motor solenoid is permanently case grounded, the starter motor solenoid will energize two coils. The pull-in winding coil energizes in order to pull the starter motor solenoid contacts closed. When the contacts close, a plunger on the contacts causes the pull-in winding coil circuit to open. The hold-in winding coil then holds the starter motor solenoid contacts closed. Voltage is then applied to the starter motor from the battery through CKT 1 (BLK) and the closed contacts of the starter motor solenoid. Since the starter motor is also permanently case grounded, the starter motor will run until the ignition switch is moved out of the START position. When this happens, a spring in the starter motor solenoid moves the starter motor solenoid contacts and the plunger back to the rest position.

MDTAHOE

Is there battery voltage at the big wire on the starter?

MDTAHOE

Here is a diagram of the starting system use a test light or meter to see where the signal is lost.

BRay09

Ill start messing with it this weekend. The rain has been a killer here and i can't get nothing done without a d*** garage!!

56cruser

Getting constant power to red at ignition switch, but no power getting to yellow wirE when in start position. Put in new ignition switch, key lock & neutral safety switch. If I jump from red to red/white, it starts normal.