Last post on Dec 06, 2013 at 3:06 PM
You are in the Pontiac Grand Am
What is this discussion about?
Pontiac Grand Am, Security System, Sedan
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
For those experiencing the security passlock problem, please see long-time member lovemygrandam's GM Security Passlock Fix tutorial.
Sep 08, 2012 (3:01 am)
i've been reading all the posts about the passlock. my 04 grand am has all the symptoms except it won't crank at all. when i turn the key nothing happens. i've checked the battery, relay and starter and they all work fine. i'm wondering if my problem is the passlock or possibly something else
#1152 of 1286 Re: passlock?? [plumcrazy72]
Sep 10, 2012 (11:45 am)
The passlock system DOES NOT keep the starter motor from running. The passlock circuitry detects if the lock cylinder has been tampered with, and if so, it sends a signal to the powertrain control module, which then stops the fuel injectors from operating.
#1153 of 1286 Re: passlock?? [lovemygrandam]
Sep 10, 2012 (1:54 pm)
ok. my battery is good. i swapped the relays and i can make the starter with a screwdriver. any ideas what it might be? by the way, when i turn the switch on the security light stays on. tried the 10 min and the thirty min thing, light doesnt go off.
#1154 of 1286 Re: passlock?? [plumcrazy72]
Sep 10, 2012 (6:11 pm)
OK, in your case, you have two malfunctions.
To get the security light to go off, you will probably have to perform one of the resistor bypass mods listed at www.bergerweb.net. The light being on solid indicates that there is either an open circuit, or a shorted circuit in the Passlock wiring.
The starter motor not running indicates bad circuitry between power distribution and the starter solenoid in circuit #5. The components that could cause the problem are:
* Fuse 5 (40 amps) in the underhood fuse block.
* The ignition switch (in the start position, there should be a short between pins A and B of the ignition switch)
* Either the Clutch Pedal Start Switch (manual transmission) or the Park/Neutral Position Switch (automatic transmission) is out of adjustment or defective. [these are the most likely suspects]
The fact that you have shorted between the battery terminal and the "S" terminal of the solenoid verifies that one of the above is the fault.
In case you need it, below is the wiring diagram for a 2002 Grand Am. Probably the same as your vehicle. [right click on the picture and choose, "View Image" to get a larger diagram.
#1155 of 1286 Re: passlock?? [lovemygrandam]
Sep 14, 2012 (10:09 am)
there are two A and two B pins. one set works with the switch in the on position and the other works in start position. if that means the switch is ok then how do i test the park nuetral switch? i have already removed the switch but i can't find any info on testing
#1156 of 1286 Re: passlock?? [plumcrazy72]
Sep 14, 2012 (11:41 am)
Use the wiring diagram. Note the color of the wires, which will enable you to trace through the circuit, using an Ohmmeter. With the PNP switch installed and adjusted properly, you should read a short between the big yellow wire coming from the ignition switch, and the "S" terminal of the starter solenoid when the shifter is in "park" or "neutral". If not, follow the instructions in the manual to adjust the PNP Switch.
If your starter motor won't run in either the Park or Neutral position, Try moving the shift lever to other positions while holding the key in the "Start" position. this may give you a clue to the adjustment you must make to get it to work.
Following are the instructions in my own service manual, which could be useful for you too.
Installation Procedure (Old Switch)
Using Old Switch
1. Place the shift shaft in N (Neutral).
2. Align the flats of the shift shaft with the switch.
3. Install the park/neutral position switch mounting bolts. Tighten the bolts to 24 Nm (18 ft. lbs.).
Important: Ensure that the engine will only start in the P (Park) or the N (Neutral) position. Readjust the switch if the engine will start in any other position.
4. Connect the negative battery cable.
Installation Procedure (Using New Switch)
1. Place the shift shaft in the N (Neutral) position.
2. Align the flats of the shift shaft to the flats in the park/neutral switch.
3. Install the park/neutral position switch assembly.
4. Install the park/neutral position switch mounting bolts. Tighten the bolts to 24 Nm (18 ft. lbs.).
5. Align the holes with the mounting boss on the transmission. Place the shift control lever in the N (Neutral) position. Do not rotate the switch. The switch is pinned in the N (Neutral) position. If the switch has been rotated and the pin is broken, adjust the switch. Refer to the using old switch installation procedures.
Important: Ensure that the engine will only start in P (Park) or N (Neutral). Readjust the switch if the engine will start in any other position. Refer to the using old switch installation procedures.
6. Connect the negative battery cable.
7. Place the transmission control shifter assembly in the N (Neutral) notch in the detent plate.
8. Loosen the park/neutral position switch attaching bolts.
9. Rotate the switch on the shifter assembly in order to align the service adjustment hole with the carrier tang hole.
10. Insert a 2.34 mm (3/32 inch) maximum diameter gage pin to a depth of 9.0 mm (9/64 inch) . Tighten the bolts to 24 Nm (18 ft. lbs.).
#1157 of 1286 Key won't turn - steering won't lock
Sep 21, 2012 (12:25 pm)
2003 Grand Am GT1... I replaced the key cylinder, fix the issue for 2 days. The new cylinder locked up like the old one. Seems that the steering not locking must be related. Since the new cylinder requires damaging to remove, I am hesitant to install another cylinder until identifying the real root cause of the issue. Anyone have any ideas?
#1158 of 1286 another 05 grand am not starting
Sep 22, 2012 (8:46 am)
hello all i'm hoping you can help. i own a 2005 grand am with a 3.4l engine. i was recently involved in a front end collision and three days later my car wouldn't start. it was acting like a fuel pump problem. so after some research i came across this forum. i have checked the fuel pump relay,checked for spark, did the passlock relearn procedure and replaced the ignition switch. after all that my car still cranks and wont start. at one point my key fob would only unlock the passenger and back doors, and by unplugging the bcm i got that to work again. my question is where do i go from here i dont have the cash to do a fuel pump. any help would be great
#1159 of 1286 Re: another 05 grand am not starting [wtfgrandam]
Sep 22, 2012 (6:01 pm)
My sons car is actually a 2003 Alero. I had it towed home the other day and it started right up, the key was left in the switch which may have had something to do with it. Then I drove it down the street and back, then it would not start unless it was in neutral. So my son drove it to school last week and guess where it sits, the school parking lot! My wife talked to a locksmith who said that they fix these all the time. We will see how that goes.
#1160 of 1286 Re: another 05 grand am not starting [wtfgrandam]
Sep 23, 2012 (2:41 pm)
Thank you for taking the time to post your concerns. I apologize for your frustrations. My best advice is to have someone at the dealer take a look at it for you. I apologize for your frustrations and inconvenience.
GM Customer Service