99 GA GT computer [Archive] - GrandAmGT.com Forum


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07-28-2005, 12:44 PM
Where is the computer located in the 99 Grand Am Gt? Also, has anyone ever replaced it? Thanks for the help.

07-29-2005, 09:36 AM

07-29-2005, 10:23 AM
Its by the brake pedal above your foot.

Yes many have replaiced it with DHP PCM.

Why you ask? (just curious)

08-01-2005, 06:07 AM
Well, because I have been having problems with my car for about a year and a half where the car will just shut off when driving & sometimes doesnt prime the fuel pump at start. When it doesnt prime the fuel pump at start, I get some of the dummy lights that get a real dim flash to them. When I turn the key to on, without starting, I can tell it doesnt prime the fuel pump. So I just leave the key to on, and dont touch it. BAM it will then just kick on. Sometimes will go off again, sometimes runs solid. I dont think Im having a fuel pump issue because its hard for the fuel pump to work when its not getting initiated at start up. I've posted on this in the past quite a bit, but Im no closer to figuring this out. Any Ideas? :banghead


08-01-2005, 06:09 AM
Its not your PCM that your having trouble with. PCM's dont just "go bad". You have problems elsewhere.

08-01-2005, 02:12 PM
Well, my problems have been intermittent. Almost feels like a short some where. I have not been able to get any kind of answer on this from any mechanic. Very frustrating. I guess I just dont know where to start :)

08-01-2005, 02:23 PM
have you had diagnostics ran

08-02-2005, 06:29 AM
Yeah. They have found nothing. Could it be a corroded battery cable?