Asked by Dec 24, 2015 at 03:49 PM about the 1996 Cadillac DeVille Base Sedan

Question type: Maintenance & Repair

I just bought a 20 year old Deville with 130000 miles on it, and my mechanic did
a tune up without replacing the plug coils (or whatever they are called). He did
the plugs, wires, engine air filter and gas filter, Shouldn't he have dome the coils
as well? The gas filter looked like it was in there for 20 years, so I am sure the
previous owner didn't do much as far as maintenance. Thanks in advance.

5 Answers


There is no way to corect a typo here once you post your question...clearly I mean to say "done" the coils, not "dome". Sorry for the typo.

1 out of 1 people think this is helpful.

Actually if you want to go to the trouble to correct typos, copy your post then delete it. Paste it back and correct typos then re-post. But we can read through typos, it happens all the time. But that being covered, if the coils are good there is no need to replace them unless you specifically tell the mechanic that you want them replaced. It's just more cost. If it ain't broke don't fix it. Merry Christmas

3 out of 3 people think this is helpful.

So how do i know if they are good, the car is 20 years old. What is the scehduled interval for replacement? Thank you.

1 out of 1 people think this is helpful.

There is no scheduled replacement interval for the coil packs. They're not replaced with a tune up. These engines only need tune ups every 100,000 miles. My '03 S-10 Pick Up has 287,000 miles on the original coil packs. However, once one fails it's best, in my opinion to replace all 4. If one goes, the others are soon to follow. On another topic, I hate to rain on your parade, but do you know if the head gaskets have been done? All Northstar engines blow head gaskets. At 130,000 miles you're on borrowed time. When the head gaskets blow it's a $3500+ repair! For starters the engine and transmission must be removed from the bottom of the car. You can't just remove the heads from the top. HTH. -Jim

1 out of 1 people think this is helpful.

If a coil pack fails you'll get a misfire that will trigger the check engine light. HTH. -Jim

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • where is the fuel injector pressure regulator on a 99 deville 2 answers

    Car is misfiring and losing pressure

    1999 Cadillac DeVille Base Sedan


    Maintenance & Repair

  • Smell fuel on idle 1 answer

    I have a 93 Cadillac deville and I smell fuel when idling. Also a miss while idle used to shut off at a stop but that quit. Still a miss and smell fuel. Plse help me figure it out. Thanks guys

    1993 Cadillac DeVille


    Maintenance & Repair

  • dies when stopped or let off gas 2 answers

    2002 Cadillac DeVille Base


    Maintenance & Repair

  • Why is my 1990 Cadillac Sedan Deville dying? 3 answers

    At first it started dying once in awhile when I was at a complete stop but the other day it died when I was coasting down hill at about 25 mph and since then I even notice it jerking on the freeway ...

    1990 Cadillac DeVille Base Sedan


    Maintenance & Repair

  • How to remedy when a previous owner has not maintained a vehicle.... 4 answers

    I have a 2003 Cadillac Escalade With 140K miles. I purchased it almost 2 years ago with over 117k miles. Recently we have had the starter, alternator, and battery replaced after it just died while...

    2003 Cadillac Escalade 4 Dr STD AWD SUV


    Maintenance & Repair


Looking for a Used DeVille in your area?

CarGurus has 1,606 nationwide DeVille listings starting at $1,499.


Search Cadillac DeVille Questions

Cadillac DeVille Experts

#1 kikero
Reputation 2,100
#2 Js08016
Reputation 1,740
#3 Cynthiasmith
Reputation 1,530
View All

Related Models For Sale

Used Cadillac Eldorado
343 listings starting at $2,900
Used Cadillac Seville
310 listings starting at $800
Used Lincoln Town Car
35 Great Deals out of 1,833 listings starting at $600
Used Chevrolet Impala
543 Great Deals out of 29,195 listings starting at $995
Used BMW 7 Series
211 Great Deals out of 6,085 listings starting at $2,995
Used Chevrolet Camaro
163 Great Deals out of 33,383 listings starting at $1,995
Used Ford Mustang
394 Great Deals out of 47,196 listings starting at $1,500
Used Chevrolet Corvette
112 Great Deals out of 20,363 listings starting at $3,495

Used Cars For Sale

2005 Cadillac DeVille For Sale
213 listings starting at $2,990
2004 Cadillac DeVille For Sale
5 Great Deals out of 205 listings starting at $1,499
2003 Cadillac DeVille For Sale
208 listings starting at $2,800