I need help with a theft lock code for my Pontiac Bonneville 2000. There is no display when I turn on the ignition and the theft lock light stays on. I have tried the one procedure with holding the 2 & 3 buttons down and writing down the code but there is no display on the radio.

SOURCE: 2000 pontiac bonneville wiring harness

u can get one to use out of a srvice book at the libruary

SOURCE: My 2000 grand am anti

This solution is for a 1999 Grand Am SE am/fm radio with tape cassette player:
Ido not know if this works for other Grand Am products past or prior 1999.
If the lcd display of the radio indicates "LOC" if you do not see anything on the display the small light behind the display is out and you need electronics to go further. If LOC appears here is what to do:
First put the ignition key to the ACC position.
2- press the HR clock adjust button once only ; the display should read 000
3-push the HR button successively until you reach 17 on the radio display 4-then press on the MN (minutes) button again until you reach the number 42
5-when the number 1742 appears on the display, press on the AM/FM button once and after on the POWER/VOL button to power up the radio.

Paul Thoegersen

• 95 Answers
• Posted on Nov 19, 2008

SOURCE: bonneville ignition cylinder replacement

get new cylinder look at it and see the spring loaded tab you need to push in. Now pull the steering wheel column lock plate (gm tool required unless you have super thumbs) pull out key buzzer switch , roll key over to unlock wheel, press the same area on the lock cylinder to release it

SOURCE: Pontiac radio codes

recommend a dealership or a place that installs radios that has access to these codes

SOURCE: Pontiac Bonneville(2000) oil pressure sending unit

The oil pressure sending unit is located behind the oil filter, Threaded into an aluminunm housing. It has wiring that plugs into the sending unit. The oil filter has to be removed and you will need a deep well socket and a 6 inch extension. Change the oil and the sending unit together.