1994 Pontiac Grand Prix will not start

Tiny
ERICT985
  • MEMBER
  • 1994 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I have a 1994 Pontiac Grand Prix and it will not start. This has happened in the past, but it was just the shifter not in proper gear. Eventually it would start. Recently, I bent the key and possibly messed up the chip. Tried the key, it didn't work. Had a replacement key made, still didn't work. Thought the neutral safety switch had gone out because of the previous issue and replaced it, didn't start. Moved on to the ignition control module because I tried using the broken key, STILL wouldn't start. The dealership and quiet a few forums online stated that it could either be the ICM or TDM. The dealership and forums stated that the security light has to be on when the key is turned on for it to be a TDM problem for the car not to start. When I turn the key everything comes on. (Radio, AC, ect.) But the car will not crank or even attempt to. Also the security light does not stay on.(So that rules out TDM) Checked fuses, wires, alternator, battery, everything. PLEASE HELP! I am STUMPED and just want my car to start.
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Thursday, June 30th, 2011 AT 1:22 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER
This will help you track down -Inspect and test the theft deterrent relay
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Thursday, June 30th, 2011 AT 3:11 AM
Tiny
RIVERMIKERAT
  • MEMBER
Check the starter and the starter solenoid.
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Thursday, June 30th, 2011 AT 5:05 AM
Tiny
ERICT985
  • MEMBER
I've tested the starter. The car cranks but will not stay on. I've read on some forums that this happens with all GM vehicles after awhile. Which when we thought it was the shifter not in the right position, it was the security. Most of these forums say to by-pass the system being that the TDM is so expensive. Any thoughts on by-passing? I will check with the diagram. Thank you!
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Thursday, June 30th, 2011 AT 1:51 PM
Tiny
RIVERMIKERAT
  • MEMBER
To me, bypassing the theft deterrent system would be a decision based mostly on where you live and crime statistics. I would never do it where I grew up in the Bay Area. If I never drove into the city near where I live right now, I'd consider it. If you decide to bypass it, the schematic provided by my colleague will help.
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Thursday, June 30th, 2011 AT 3:53 PM

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