Won't crank
04-25-2019, 10:18 AM
#34
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Thread Starter
Join Date: 03-28-2019
Location: Illinois
Posts: 39
where?
It's the BCM that controls these things. That would be the one to replace if you are throwing computers at it. You will need the 30 minute relearn in that case and the radio won't work and the speedo/odo won't work.
Fuse #10 & #8 on the BCM is for the Theft Deterrent Module.
need to check the start relay for signal and power. Should be able to force the starter by jumping pins 30 & 87 on the fuse box, 1 of them should be hot if the fuse is good. The control is on either 85 or 86. Anyway, 2 pins should be hot and one NC one ground; the NC will be the signal (ground). You need to find out if the signal or the power is being inhibited.
Fuse #10 & #8 on the BCM is for the Theft Deterrent Module.
need to check the start relay for signal and power. Should be able to force the starter by jumping pins 30 & 87 on the fuse box, 1 of them should be hot if the fuse is good. The control is on either 85 or 86. Anyway, 2 pins should be hot and one NC one ground; the NC will be the signal (ground). You need to find out if the signal or the power is being inhibited.
30 & 87 where??? Crammed myself into pass floor. Pulled, cleaned and replaced everytning. Now I don't know where these pins are to cross.
04-25-2019, 10:43 AM
#35
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Thread Starter
Join Date: 03-28-2019
Location: Illinois
Posts: 39
jump
It's the BCM that controls these things. That would be the one to replace if you are throwing computers at it. You will need the 30 minute relearn in that case and the radio won't work and the speedo/odo won't work.
Fuse #10 & #8 on the BCM is for the Theft Deterrent Module.
need to check the start relay for signal and power. Should be able to force the starter by jumping pins 30 & 87 on the fuse box, 1 of them should be hot if the fuse is good. The control is on either 85 or 86. Anyway, 2 pins should be hot and one NC one ground; the NC will be the signal (ground). You need to find out if the signal or the power is being inhibited.
Fuse #10 & #8 on the BCM is for the Theft Deterrent Module.
need to check the start relay for signal and power. Should be able to force the starter by jumping pins 30 & 87 on the fuse box, 1 of them should be hot if the fuse is good. The control is on either 85 or 86. Anyway, 2 pins should be hot and one NC one ground; the NC will be the signal (ground). You need to find out if the signal or the power is being inhibited.
2 hot. No signal on other 2 when key in start. Nothing by crossing 30&87. Relay in so it's read from front of vehicle. Tried rotating too.
04-25-2019, 01:45 PM
#36
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Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,696
So no signal getting to crank relay.
Relay #51 is for the run/crank/park neutral switch. Not the same as crank relay #34.
Oddly enough, the back up lights are involved. So check if the back up lights work.
Check relay #26 under hood.
The relay pin numbers are printed on the relay and the fuse box, match them up.
There is a chance that the ign switch got dislodged. There is only 1 wire for run/crank. There have been lots of reports of sloppy recall work.
These numbers are just examples not actual:
Turn the key to RUN 5V signal to BCM, BCM activates run relay.
Turn the key to START 12V signal To BCM, BCM activates run relay and crank relay.
The crank relay is powered by the run relay.
Check the recall status for yourself here https://www.chevyhhr.net/forums/gm-r...-status-50716/
Relay #51 is for the run/crank/park neutral switch. Not the same as crank relay #34.
Oddly enough, the back up lights are involved. So check if the back up lights work.
Check relay #26 under hood.
The relay pin numbers are printed on the relay and the fuse box, match them up.
There is a chance that the ign switch got dislodged. There is only 1 wire for run/crank. There have been lots of reports of sloppy recall work.
These numbers are just examples not actual:
Turn the key to RUN 5V signal to BCM, BCM activates run relay.
Turn the key to START 12V signal To BCM, BCM activates run relay and crank relay.
The crank relay is powered by the run relay.
Check the recall status for yourself here https://www.chevyhhr.net/forums/gm-r...-status-50716/
04-26-2019, 12:00 PM
#37
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Thread Starter
Join Date: 03-28-2019
Location: Illinois
Posts: 39
Tilt
Downloaded all schematics. Backup lights working.
Sunday I can get back to it. Bought some 2.75 reader glasses...
Thanks for your help.
Oh...my friends 08..he changed engine(rod) and won't start. Live data shows 90 rpm at crank but says CPS needs relearned...
These HHR'S sure are complicated.
Sunday I can get back to it. Bought some 2.75 reader glasses...
Thanks for your help.
Oh...my friends 08..he changed engine(rod) and won't start. Live data shows 90 rpm at crank but says CPS needs relearned...
These HHR'S sure are complicated.
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