Cranks but will not run - Cars & Trucks

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

a little longer before cranking.

what does that mean?

dont crank,
cranks slow.
cranks (Fast) called normal.
cranks fast starts, then stalls.
cranks fast, starts easy, starts, runs and stays running, normal
at what point does it fail, and how exactly.

we can't hear it, or watch you, so...................................

Air and fuel filter,tune up,battery and connection ,

Check fuel regulator you may not steady pressure

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.

Short answer, your batter is bad. or is disCHARGED:
Long.:

wont crank?
no engine, cranks ,unless the starting system works.
unless pushed fast, like my car or i park on a hill and coast jump my car.(M/T tranny rule)

NO crank, is the true failure here:
slow Cranks are , bad battery , or a discharged battery , due to bad charging system or parked for 3 months or longer.

so ill assume its NO CRANK.
I turn the key TO START and the starter fails to CRANK.
the starter motor is dead. (key clue 1)
so i attach a set of jumper cables to my Caddy, running and this car
now cranks and RUNS (you left that out. above, huh? runs)

turnsover means nothing, because the engine starter turns over
and the engine can turn over and the engine can run,
once running the EFI system SUSTAINS runninng.
so there are 4 states there. (4 phases )

No cranks #1 reason to be slow , are a bad battery
so I charge that battery, and see how if it cranks , now?
it dont crank means a bad battery
it does work( crank) see how long it works.../?
if it dies again, or better, check the cars Alternator for by measuring
accross the battery terminals running , with any volt meter.
13.3 to 15vdc is a good alternator running the engine.
if NOT, the charge system is bad. (system)

On some cars the IMMO can block Cranking or for sure blocks
fueling after 2 seconds. So. watch the IMMO light on the dash.
Immo is the Immoblizer. option.

Have you checked fuel pressure with a gauge ? Vortec engines require 65+ psi to run.

glad you solved it

you should check on your battery cables,chasis cables, and engine bay cables related to your ground or bad connection in between connectors, terminals or hubs.

NEEDS A TUNE UP