Which relay controls whether or not i get a crank

The ignition switch should supply power to the wiper switch. The wiper switch should supply power to the wiper motor.

Security light lit in the instrument cluster ? Do you know how this starting system works ?

Circuit Description
For ignition switch power modes refer to Body Control System Description and Operation . Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the START relay coil supply voltage input terminal of the engine control module (ECM) and the coil side of the START relay. Placing the ignition in the START position sends a message to the ECM requesting engine start. If the ECM has determined that the transmission is in Park or Neutral and theft is not active, it will supply 12 volts to the control circuit of the START relay. Battery positive voltage will then flow through the switch side of the START relay to the S terminal of the starter solenoid, cranking the engine.


Rather then guessing, hooking up a scan tool an checking codes and viewing live data to see if all inputs and outs from the BCM an PCM are what they should be.

DTC P0615

DTC P0615 Starter Relay Control Circuit

The engine control module (ECM) supplies 12 volts to the control circuit of the START relay when start enable has been requested. The ECM monitors this circuit for conditions that are incorrect for the commanded state. If the ECM detects an improper circuit condition, START relay DTC P0615 will set.

You need to find out which relay is clicking . run/crank or start relay . Do you know how to test computer controlled relays ?

Here's a video on testing a computer controlled fuel pump relay , same as the start relay or any GM PCM controlled relay .

https://www.youtube.com/watch?v=McnXLcJNVfI&t=296s

85 & 86 are the control side of the relay , one should have battery voltage (85) the other (86) doesn't .86 is control from the PCM - engine computer . PCM supplys a ground to close contacts inside the relay sending battery voltage to the S terminal on the starter solenoid . If the PCM doesn't see a voltage signal fron the park neutral safety switch it won't energize the relay .
Circuit Description (ECM/PCM Controlled)
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.

Need better info.
when shut off no start batt dead and ignition fuse in bjb replace fuse and still no start or crank no power to cluster cluster dead on commute back ????????? What about ignition fuse ? It was blown an you replaced it or you just replaced it ???? When you shut it off no restart ,the battery was dead ? Test battery , battery cable connections , charging system - is it charging ?
First off your probably unaware of how this vehicle works , This vehicle is powered up by the BCM turning on relays an sending commands over the serial data bus (network) ,do you know what that is ? The ignition switch is a low voltage input to the BCM .
Circuit Description (Key Start)
For ignition switch power modes refer to Body Control System Description and Operation . When the ignition switch is placed in the Start position a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the powertrain control module (PCM)/engine control module (ECM) notifying it that CRANK has been requested. At the same time the BCM is supplying 12 volts for the IGN 1 relay closing it and supplying battery positive voltage for the crank relay coil. The PCM/ECM verifies that the transmission is in Park or Neutral. If it is, the PCM/ECM grounds the control circuit of the crank relay. When this occurs battery positive voltage is supplied through the switch side of the crank relay to the S terminal of the starter solenoid.

Check the Ignition 1 relay -
Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs ignition 1, ignition 3 and crank to distinguish the correct power mode. Once the BCM has determined the power mode selected by the vehicle operator it will energize the Ignition relay, Run relay and retained accessory power (RAP) relay, depending on which power mode is selected.
Ignition 1 Relay
The relay uses a Hot At All Times B+ power source derived from the underhood electrical center. The ignition 1 relay supplies a power signal to the following circuits when the Run or Crank power mode is selected:
• AC clutch relay
• ABS STG angle sensor
• Antilock brake system (ABS) yaw sensor
• Auxiliary power drop connector
• Crank relay
• Cruse control switch
• Electronic brake control module (EBCM)
• Engine control module (ECM)
• HVAC module
• Ignition control module (ICM)
• Instrument panel cluster (IPC)
• Sensing and diagnostic module (SDM)
• Transmission solenoid circuit

First off you have no clue how complex the starting system is on your vehicle . Suggest you buy factory service repair manual an read up on the starting system on your vehicle . A lot of thing's can keep the PCM/ECM from energizing the starter relay .Do you know what happens when the key is turned to the start position ?
Circuit Description (ECM/PCM Controlled)
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.
Circuit Description (BCM Controlled)
Moving the ignition to the START position signals the body control module (BCM) that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the powertrain control module (PCM) requesting engine start. The BCM also energizes the RUN/CRANK RELAY. When the RUN/CRANK RELAY switch side closes, and the vehicle is in Park or Neutral or with the clutch is fully depressed, if equipped, supplies voltage to the starter relay coil. The PCM verifies the transmission is in Park or Neutral and the clutch is fully depressed, if equipped. The PCM will then ground the control circuit of the starter relay, closing the switch supplying voltage to the starter solenoid. On some vehicles the starter will continue to crank the engine with the key released until it starts of the crank command has timed out to prevent excessive heat build up in the starter circuitry or the PCM receives an engine run flag.

Your best bet , take it to a qualified repair shop before you short out a control module.

2007 Chevy her ? HHR ? 2.2L 4cylinder , check the run/crank relay ! Relay # 51 in the under hood fuse/relay box.
Power to many of this vehicle?€™s circuits are controlled by the module that is designated the power mode master (PMM). This vehicle?€™s PMM is the body control module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.
Run/Crank Relay The run/crank relay control circuit is connected to a constant ground and is switched by the ignition 1 circuit or the body control module (BCM). The BCM, will in lieu of the ignition switch position, activate the Run/Crank relay during a remote start event. The Run/Crank relay supplies a power signal to the following circuits, when the a Run or Crank power mode is selected:
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Automatic transmission shift indicator

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Automatic transmission (A/T)

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Switched power feeds to the BCM

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Electronic brake control module (EBCM)

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Electronic ignition module (spark control)

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Electronic power steering module (EPS)

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Fuel injectors

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Powertrain control module (PCM)

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Park neutral position (PNP) switch

Is there a SECRUITY light lit on your instrument cluster ? Did you check the starter relay in the under hood fuse / relay center ?
For ignition switch power modes refer to Body Control System Description and Operation . Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the START relay coil supply voltage input terminal of the engine control module (ECM) and the coil side of the START relay. Placing the ignition in the START position sends a message to the ECM requesting engine start. If the ECM has determined that the transmission is in Park or Neutral and theft is not active, it will supply 12 volts to the control circuit of the START relay. Battery positive voltage will then flow through the switch side of the START relay to the S terminal of the starter solenoid, cranking the engine.
I suggest you take this to someone knowledgeable in new car electronics . There is a lot going on here , modules talking to each other on GMLAN serial data communication network . If no anti-theft system problems The BCM sends a message to the PCM on the GMLAN telling it to energize the run / crank relay ! If you knew vehicle systems you could check for power an control of the start relay right at the relay base / socket !
VEHICLE RELAYS Operation Diagnosis

Did you check the EFI relay an circuit opening relay ? these relays power the fuel pump !
The circuit opening relay provides ignition positive voltage to the fuel pump. The circuit opening relay is controlled by the powertrain control module (PCM) and receives ignition positive voltage from the EFI relay. The PCM monitors the crank signal circuit, terminal C3-11, for voltage when the ignition switch is in the START (engine cranking) position. When the crank signal circuit indicates the engine is cranking the PCM energizes the circuit opening relay. The PCM also energizes the circuit opening relay whenever reference pulses from the crankcase position (CKP) sensor circuit are detected. If the crank signal circuit does NOT indicate the engine is cranking the PCM will energize the circuit opening relay based only upon reference pulses.

Yes, the pink wire to the ICM and from the run/crank relay should have battery voltage in run or start. If not, check fuse 11, a 10 amp fuse in the Fuse Block-Underhood. Also check fuses 38- a 30 amp fuse supplying power to the run/crank relay, and fuse 9- a 10 amp fuse between the run/crank relay and the ECM. All of these fuses are in the underhood fuse block.
Fuse 38-the 30 amp fuse, the power feed for the run/crank relay- will be hot at all times. Fuses 9 and 11 will be hot in run or start. Check for power at the fuses. If the relay is not turning on and sending power to those fuses and to the ICM, and the ECM, (and to the injectors through fuse 16 - a 10 amp fuse), then work back to the ignition switch and the body control module. Wish I didn't have to say that, but yes, the BCM is between the ignition switch and the run/crank relay.
Good luck, Michael.

I would start by checking all the fuses, whether they are related or not. Also try swapping around relays, they are usually the same size/style. Also can you hear anything, the click from the starter, or anything else when you try to start. If you don't hear anything and feel like getting under the car you could bypass the starting system and manual jump the starter. Put car in park, take a piece of electrical wire, get to where you have access to the starter wires and use the wire to jump from the smaller wire to the big cable. They will be on two different terminals on the starter. By careful not to be around and pulleys/belts as the engine may crank. Leave the key off and the engine should crank. if it dosen't you have a problem with the starter. If it does crank you have a problem in the control circuit ie key switch, fuses, relays, etc.