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Hallo, how does one find info on a 97 STS?

1.3K views 11 replies 6 participants last post by  basscatt  
#1 ·
My youngest son picked up an old 97 Cadillac Seville STS last week and the guy told him the only issue was it was overheating.

The overheating was easy enough the guy had put "literally" 3/8 of inch of silicone on the thermostat housing for a gasket and gummed up the new thermostat. That and he had some cheap aftermarket electric fans installed "backwards" pushing the air the wrong way through the radiator. The electric fans are also pretty worn out, you can hear the bearings rattling in them.

The car appears to be quite sound for the most part and is very good looking with only 150K miles on it. But... After dealing with the overheating and putting a new battery in the car the alarm went off and nothing seems to work now. The key reads fine as well as the sensor that reads the key chip/resistor. The mechanics shop "Meinike" if you call that a shop ( I don't) had no idea what to make of the issue and offered my son a job when they found he simply bypassed the starter lockout to get it started and drive it to the shop. But they can't seem to even find information on the car let alone have any clue as to what to do.

I went and wired the alternator to charge bypassing the lockout and we drove the car home, but many systems are still locked out. While no doubt I could eventually just bypass the lockouts, it would be nice to know a little something about how this alarm works, I am assuming that a sensor somewhere is likely setting off the alarm and thus the lockouts, but no one seems to have any info on the car at all. I am an electronics engineer and there is little that I can't figure out or simply bypass, but this car has an insane amount of electrical components, I could be months trying to bypass everything effectively.

Anyone have a good source of information on these old cars? For the $500 my son spent on this, it could be quite a nice car for him and his family if we can figure out the alarm issues.
 
#3 ·
So the car has absolutely no dash the only thing the dash has is the flashing security light as well as an orange park light that turns off when I turn it to the crank mode. The radio works in the accessory mode but not the run mode or the crank mode on the key.
Also my dad said I bought it for 500 but I'm in this car $250 just a correction lol
 
#4 ·
Jortman, Is this the same vehicle as described in Post #1?

Always use the trim level when buying parts - SLS or STS - it makes HUGE differences in some engine, body, service, parts, advice, maintenance.

Basic and detailed info for any vehicle here in CF - and in the Seville/Eldorado forum -

Google your question, always preceded by "cadillac forums" as in - "cadillac forums 1997 seville thermostat replacement".

You WILL need the real GM/Cadillac/Helm service manuals every day you own the car - used on eBay, new at www.helminc.com, online at www.alldatadiy.com.

The car uses the OBD-II diagnostic protocol and has its own built-in scanner system. Learn to use it by studying the correct sections of the sticky thread up there ^ ^ ^ titled "How To Pull Codes". Matter of fact, study ALL the stickies in Seville and in Engines; Northstar - you are now on a steep learning curve in rocket science.
 
#6 ·
His post is in THIS thread- about 3 posts back. He posted here but with no vehicle type specified so I went back, did some computer address sleuthing, and tied the two of you together. Always go back through your thread to see if anyone else has posted there since you last logged in.

You'll get used to the forums - when you log in, click the NEW tab at upper right - that way you see what's been posted since your last login, not the entire world.

p.s. I edited your profiles to show what all y'all are working on. It sure helps with advice. ........... and it appears that you found his post due to your "like" entry.
 
#8 ·
Security codes are only a tiny part of the diagnostics. You want all P-Powertrain, B - Body, C - Chassis, and U - power and data codes.

The car has its own built-in scanner/memory/readout. Use the correct sections of the sticky thread up there ^ ^ ^ to use the scanner.

Bookmark this and sue it to decipher and post found codes.

 
#9 · (Edited by Moderator)
Alright I'm sorry for the confusion but I am unsure by what you mean with sticky threads I don't know if this helps or not but on my instrument cluster doesn't show anything it doesn't tell me disabled to start or nothing it has no display at the moment

I know this is on a different site but here is a video of what's going on

Never mind we found the sticky forums you were talking about. Whenever I try to do that absolutely nothing happens on the dash I've tried holding them for up to a minute each try which the key in literally every position I cant get anything to pop up on the dash except the security light and the orange park light