Cadillac Owners: Problems & Solutions - READ ONLY

436 messages, Last post on Oct 31, 2006 at 8:52 AM

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#428 of 436 Driver Information Center Anomaliers with 2001 DeVille by caddygeorge Sep 12, 2006 (5:03 am)
My problems started with a "Check Coolant Level" message that appeared on my DIC when I knew the coolant tank was full. Later the gas gauge started moving up and down without correlation to the amount of fuel in the tank (it went from half full to full within five minutes when I knew the tank was nearly empty - I first thought I had invented a gasoline refining car, but that seemed a bit unlikely). The next issue was the instantaneous and average mileage indicator, which was anomalously high. I am guessing some computer module has gone bad. Is there a module that controls the gas gauge, the coolant indicator, and the instantaneous mileage? Do I just have two sensors that went bad at the same time? I would appreciate any advice. Replies to this message: danat2ndstory (Oct 31, 2006 8:52 am)
#429 of 436 Re: 91 CADDY DEVILLE [bernadette55] by bernadette55 Sep 15, 2006 (8:23 pm)
Replying to: bernadette55 (Oct 24, 2005 7:36 pm) I have solved this problem it was my main temp control box located under the dash board cost me 75.00 bucks. Now I am working on an emission issue first time pass the first two did some more work and now I am failing by all 3 something is wrong can anybody help me? Replies to this message: bernadette55 (Oct 13, 2006 8:53 pm)
#430 of 436 Re: 91 CADDY DEVILLE [bernadette55] by bernadette55 Oct 13, 2006 (8:53 pm)
Replying to: bernadette55 (Sep 15, 2006 8:23 pm) Thanks that helps me a lot I just went through the emisson thing and failed on all three I went to midas it was my cataylac converter put It on the same day and pass with flying colors.
#431 of 436 Re: HELP! - '97 STS IDLING PROBLEMS [jaymann] by tcwood61 Oct 29, 2006 (6:45 am)
Replying to: jaymann (Apr 02, 2006 11:42 am) I have an '01 STS that seems to be having the same problem you describe. Have you found a solution?
#432 of 436 Re: Driver Information Center 2001 DeVille [caddygeorge] by danat2ndstory Oct 31, 2006 (8:52 am)
Replying to: caddygeorge (Sep 12, 2006 5:03 am) Hey, I'm having that SAME problem with my 2000 Deville DTS. I thought I was going CRAZY when the gas gauge started going up and down. It only happened once or twice and hasn't happened since. I had a shop look at the coolant message and suggested to replace the coolant tank that includes the sensor as they couldn't find a leak in the system. I'll probably get the ball rolling with that unless someone else has found anything else. The part on the coolant tank is GM 25774005 but can only be purchased from a GM shop, no parts stores.