Hey everyone. Just a few quick questions here. For starters, the car is a 1996 Bonneville SE with the auto climate controls. One problem is that the temperature blinks all the time. I read on this forum that I should try scanning the OBDII with a code reader. I did this but it didn't come up with any codes. Will an OBDII code reader pick up the codes that the auto climate system is trying to tell me? *Is* it trying to tell me something? It usually displays the exterior way too high (usually upwards of 130) but when I crank the heat on, it blows hot. However, the air conditioner does not seem to work. I have charged it up, but it only blows moderately cold air.
Can anyone help me with this? I don't want to have to go to a dealer if I don't have too.

Second question is can I put an SSE/SSEi dash in my car? Are the wires and sensors already there for it, and all I have to do is plug the new dash board in? I had a couple of early 90'* Grand Prix'*, and both were totally wired for all the toys such as Heads up Display and the computer center.
What about putting the heads up display into my car? Will I have to rewire everything or are the wires already there?

Last question is what makes the 'beep' noise to tell you your headlights have been left on or that your keys are still in the ignition after you shut the car off and open the door? My car does not beep at all, ever so I was wondering where the little beeper may be.

Thank you for your help everyone and sorry for such a long post!!!

You cannot read the codes. A dealer must do it.

The SSEi dash might be quite a trick. More info in the Electrical and Electronic forum.

Not sure about your beeper. Never bothered to look for mine, but I think it'* part of a module, not a seperate noisemaker.

if you have a high temp reading outside, you might need to replace your temp sender that is on your radiator support.

the SSE dash will be a great undertaking, along with the HUD. Although there are i think 3 members that have added a HUD to there SE. There are alot of things the SSE has that your SE dosent have Compass, and the DIC

could your check your RPO codes for H4U, you might have an SLE...an SE with the Auto Climate is a feature of the SLE Package

When you say a dealer must read the codes, do you know which type of code reader they must have? I have an OBDII code reader and it came up with nothing and when I asked my dealer about reading the codes for the auto climate control they had no clue as to what I was talking about. I think I might just replace the temp sender unit by the rad that willwren suggested and see what happens. As for the RPO code H4U, it is not present on my RPO code list. I believe I read somewhere that the SLE package was a USA package and that Canada did not have it.
Anyhow, thanks for the info!!

I did not suggest changing the temp sensor, nor would I. Shotgunning parts only costs you money. OBD2 readers will NOT read those codes, and if the dealer doesn't know what to do, find another dealer.

My apologies as I must have read you wrong. Anyhow, I did end up going to the junk yard today and I did replace the temperature sensor that you were talking about and the temperature unit now displays the correct temperature. I once again apologize for mis reading you, but it turned out good in the end, so I thank you.

You're very lucky. There are hundreds of things that could have caused that flashing display, and I've only seen ONE ambient outside temp sensor cause it. In over 2 years here.

One more question for you. As you know, I replaced the outside temp sensor and now the car display'* the correct temperature, however it will not blow cold air. The air it blows on Max cold (60 degrees) is just as hot as it blows on Max heat (90 degres). Every now and then when I turn the car on and put it onto Max cold it will blow cool air, but then it get'* hot again. I charged the A/C compressor up, but I don't think that is the problem. It seems to me that the car does not know the difference between when I have it on max-cold and max-heat. Could this be something simple? The unit itself perhaps?

Thanks again for your time.

You need to confirm whether or not the compressor is cycling. We'll go from there.

Something tells me that if he charged the system, that the compressor is cycling. Otherwise some pretty bad evil things woulda happened to him.

I'm gonna lean to the air actualtor possibly being the culprit.

PS Will, my My outside temp sensor caused mine.