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Cadillac DeVille

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#1157 of 2473 I had a 1994 Cadillac DeVille... by lemko Apr 18, 2003 (12:30 pm)
...I purchased new in November 1993 and traded last January for a new 2002 Seville STS. My car had 96K miles and had given me no serious problems and few small ones. About the worst was a water pump replacement 85K miles which cost around $500.
#1158 of 2473 also found a 95 concourse by elko Apr 20, 2003 (12:17 am)
i'm trying to decide between the 94 deville-83k-mint cond. or 95 con.n-star-76k-needs major detailing to be sharp.$1000 more for the 95.i love the power of the northstar.but the 94 is hard to pass up,any thoughts?also what can be done to give the n-star even more power?
#1159 of 2473 2000 Base Deville Hesitates by barry45rpm Apr 20, 2003 (9:19 am)
Tell them exactly what you wrote here. They'll know what to do. Probably reprogram the computer, but I had it too and its gone now. If they can't fix it switch dealers to one that wants to satisfy you! Go!
#1160 of 2473 elko by oldsman01 Apr 21, 2003 (9:26 pm)
I think I'd go with the 95. The Northstar V8 and they old 4.9 liter V8 are two TOTALLY different animals.
#1161 of 2473 What oil is best in your Caddy? by suburbank2500 Apr 24, 2003 (5:48 am)
Despite the login name, I own a 97 Sedan Deville; Bought it with 139000, and now has 143700 miles on it; I've expierienced oil usage as many of you have, my only question is has anyone tried different oils? I've used the Valvoline MAX-LIFE, Phillips Trop Artic, and they're ok; Also, I live in the Midwest, so weight wise I'm flexible; 5W or 10W/40? thanks for the time;
#1162 of 2473 What oil is best in your Caddy? by abc246 Apr 24, 2003 (10:19 am)
From what I have read piston ring sticking is the most common reason for using oil. I would add a can of Reslone and drive it harder.
#1163 of 2473 I've always used... by lemko Apr 25, 2003 (9:51 am)
...Pennzoil 10w30 or 10w40 oil in all my cars.
#1164 of 2473 2000 Deville Downshifting by mdm4 Apr 28, 2003 (4:27 am)
Barry, Can you tell me exactly what the dealer did to your car to correct this problem? I found a TSB that deals with reprogramming the Powertrain Control Module (PCM). I called a couple of dealers and they were clueless. I would like to be able to tell them what I think the problem might be. Any help would be greatly appreciated.
#1165 of 2473 Reprogramming PCM by barry45rpm May 03, 2003 (6:34 am)
Thats exactly what they did. Ask the dealer to reprogram the PCM with the latest program for your car. That will fix it. I have found that sometimes when I pass certain 1020 mile intervals on the odometer the car is less responsive or performs somewhat "off" as in your down shifts. I believe thats because in the programming, the engineers have told the car at that milage to use a different set of parameters, or programming. When enough people reach that milage & complain the car is not right, the engineers look at the program, rewrite some code & come up with an "update" or revised program to restore some former parameter, or something that was missed. I find that "changes in behavior" that are noticeable occurr suddenly and at a given milage interval. Call me crazy, but when I complain & they reprogram, the car runs FINE.
#1166 of 2473 Updated software for PCM by mdm4 May 07, 2003 (4:54 am)
Barry, Just spoke with the dealer, he has had my Deville since Monday to correct three recalls and he said that they found an update to the PCM software. I am picking the car up this afternoon, I will let you know if the 4th to 3rd gear surging is corrected. Thanks for your good advise.

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