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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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09 hhr on power to small wire on starter have power to big

Customer Question

09 hhr on power to small wire on starter have power to big red power wire cant find any blower fuses
JA: Thanks. Can you give me any more details about your issue?
Customer: checked battry 12.6 no lockout sec , Ran fin turned off at night next day did not start in morning . try ed to start in neutral lights and everything else works
JA: OK got it. Last thing — Chevy Mechanics generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: Chevy
Expert:  SARMIENTO22556 replied 1 year ago.

Hello, I will try my best to help you with your concern.

let me see if I have this correct

you have power on the big red wire to the starter but no power to the small wire?

Is there power on that wire when you turn the key to the start position?

Customer: replied 1 year ago.
no took starter out had it checked starter checker out fine ,hooked starter wires backed up tried test light on wire then had co worker turn key no power to light
Expert:  SARMIENTO22556 replied 1 year ago.

do you know if there are any codes in the engine?

Customer: replied 1 year ago.
no cod came up the check eng light has not came on to say ther is a cod to check, have small code reader that would give me that
Expert:  SARMIENTO22556 replied 1 year ago.

first thing to do is trace the circuit back to the fuse/relay panel

in the panel next to the left strut tower, there is a crank relay

find the relay and see if there is a similar relay near by, if there is swap the relays and try to start the vehicle again. If it starts then you have a faulty relay.

if it still doesn't start then we will need to troubleshoot more

Customer: replied 1 year ago.
nope did not start
Expert:  SARMIENTO22556 replied 1 year ago.

check fuse 5 in fuse panel 30 amp make sure that's ok

then pull the relay and see if you have power on one of the terminals all the time

you will also need to check to see if one of the terminals gets ground when turn the key to start

Customer: replied 1 year ago.
everything checks out so far have ground and power
Expert:  SARMIENTO22556 replied 1 year ago.

ok lastly one of the terminals should have power on it when the key is turned to start

Customer: replied 1 year ago.
do not have that no power on any when i turn key
Expert:  SARMIENTO22556 replied 1 year ago.

ok you will need to back track to the ecm and see if there is power coming from there

Expert:  SARMIENTO22556 replied 1 year ago.

pin #32 in the ecm harness purple/white wire should have a power signal when turning the key to the start position

Customer: replied 1 year ago.
I have a 08 hhr that we use for parts can i just take that and change out .
Expert:  SARMIENTO22556 replied 1 year ago.

no the ecm will need to be programmed,

Customer: replied 1 year ago.
if i take it out how can i get it programmed
Customer: replied 1 year ago.
thank for your help boss said no over time dun at 4;30
Expert:  SARMIENTO22556 replied 1 year ago.

the ecm has to be programmed at the dealer or a independent shop that has the software needed to program it.. Not every shop is willing to pay the fee needed to obtain the needed software

Customer: replied 1 year ago.
No power at what i think is the purple white wine . Wich pin is number 1
Customer: replied 1 year ago.
Is the exm in the back right sibe panel
Expert:  SARMIENTO22556 replied 1 year ago.

looks like according to this picture it is under the hood. up by the strut tower? not the greatest picture but here it is