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sprinkles08
sprinkles08, ASE Certified Technician
Category: GM
Satisfied Customers: 21599
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Passlock sensor, Ignition passlock sensor, 06 GMC envoy, I

Customer Question

Hi
JA: Hello. What is your issue regarding?
Customer: Passlock sensor
JA: Which particular sensor are you asking about? And have any trouble codes been triggered?
Customer: Ignition passlock sensor
JA: What is the model/year of your GM?
Customer: 06 GMC envoy
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I changed the ignition switch an the cilynder
JA: Anything else you think the mechanic should know?
Customer: Nop
Submitted: 3 months ago.
Category: GM
Expert:  Gary replied 3 months ago.

what is the problem you are having ?

Customer: replied 3 months ago.
I just can't unlock my gm
Customer: replied 3 months ago.
Supously the lock light have to be flashing but mine stays on
Expert:  Gary replied 3 months ago.

unlock the steering ? or it will crank over and not start because the theft system is activated ?

Expert:  Gary replied 3 months ago.

will it start up and run and just the light is on ?

Customer: replied 3 months ago.
It doesn't crank becuze it shows not enough power but when I move the lights on and off gets the power full. But not crank just a click
Expert:  Gary replied 3 months ago.

and a jump start will not help ?

Customer: replied 3 months ago.
Nop I Already put a new battery. Change the ignition switch. And the ignition cylinder do you think that I have to change the pass lock sensor ?
Expert:  Gary replied 3 months ago.

the pass lock system will NOT stop the engine from physically cranking over it ONLY shuts off the fuel injector pulse

do you have a multi meter on hand ?

Customer: replied 3 months ago.
I'm at work right now but you can tell me what to do
Expert:  Gary replied 3 months ago.

first put a breaker bar and socket on the front engine center crank bolts on the crank shaft balancer and make sure you can turn the engine over clockwise 2 turns if you can then remove the starter relay and jump the terminals 30 to 87 on the box the relay plugs into as the little numbers should be on the relay will it crank over ?

how are you making out ?

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Customer: replied 3 months ago.
When I turn the key to position II all the lights comes up except for the check engine light that one flashes low
Expert:  Gary replied 3 months ago.

this sure sounds like there is a big power or ground issue

can you also be sure the bog power bolted to the under hood fuse box shows 12 volts at it

if so see if the fuse # 28 and 22 in the under hood fuse box show 12 volts on both sides of those 2 fuses with the key on testing through the little openings on the tops of those fuses

how are you making out ?

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Customer: replied 3 months ago.
is not gona be a lock issue?
Expert:  Gary replied 3 months ago.

that is correct

it can NOT be the lock system

it is missing a power or ground causing this problem

how are you making out ?

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Customer: replied 3 months ago.
OK I can do that what do you think it mean. That when I turn the lights off and on the check engine light comes up normal
Customer: replied 3 months ago.
Can you tell me which grounds I have to check?
Customer: replied 3 months ago.
What it means that the lock light doesn't turn off
Expert:  Gary replied 3 months ago.

the ones off the negative battery cable that connects to the drivers side of the engine oil pan and the negative cable that connects to the fender well

it does not matter right now that light is on right now

we need to get it to crank over

Customer: replied 3 months ago.
I already have check this cables I did check the one under the driver sit also I even used sand paper
Expert:  Gary replied 3 months ago.

follow the negative battery cable and be sure its all clean and tight

then you need to check voltages

Customer: replied 3 months ago.
How do I check voltage on the grounds?
Customer: replied 3 months ago.
If I would have problems with the ignition switch, sensor, and lock system what would be the symptoms?
Customer: replied 3 months ago.
Helloooo
Expert:  sprinkles08 replied 3 months ago.

Hello and welcome to JustAnswer!

Do you still need help?