Cadillac

Cadillac Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Cadillac

Cadillac Deville need step by step instructions on replacing

Customer Question
need step by step instructions...
need step by step instructions on replacing water pump on 2003 cadillac deville. Is this a repair a home mechanic can attempt?
Submitted: 6 years ago.Category: Cadillac
Show More
Show Less
Ask Your Own Cadillac Question
Answered in 2 minutes by:
11/26/2010
Cadillac Mechanic: Tim West, ASE Certified Technician replied 6 years ago
Tim West
Tim West, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4,638
Experience: Ase certified service manager
Verified
Thanks for visiting Just Answer,
You will need a special tool.

Water Pump Replacement

  • Tools Required
  • J 38816-A Water Pump Remover & Installer
  • J 38185 Hose Clamp Pliers

Removal Procedure



  1. Drain the cooling system.
  2. Remove the upper filler panel.
  3. Remove the air cleaner assembly.
  4. Remove the secondary AIR injection control valve.
  5. Remove the oil level indicator tube nut.
  6. Remove the water pump belt shield fasteners. Remove the water pump belt shield.



  1. Remove the water pump drive belt (4).



  1. Position the J 38185 to the clamp in order to remove the radiator outlet hose from the thermostat housing.



  1. Remove the water pump cover bolts.
  2. Remove the water pump cover.
  3. Disconnect the heater return hose.



  1. Position the J 38816-A to the water pump locking ears.
  2. Fasten the support plate to the water housing crossover, to ensure proper engagement of the tool to the water pump locking ears.
  3. Using the J 38816-A, turn the pump clockwise in order to remove the pump from the housing.
  4. Remove the support plate from the water housing crossover.



  1. Remove the water pump from the vehicle.
  2. Remove the seal from the water crossover.
  3. Clean the sealing surfaces of the water housing crossover and the pump cover.
  4. Clean and inspect the water pump.

Installation Procedure



  1. Insert the seal into the recessed portion of the water crossover.



Important: The notched locking ear (1) must be in the 7 O'clock position.

  1. Index the water pumps locking ears with the tangs in the water crossover.



  1. Position the J 38816-A to the water pump locking ears.
  2. Fasten the support plate to the water housing crossover, to ensure proper engagement of the tool to the water pump locking ears.

Notice: Refer to Fastener Notice in Service Precautions.

  1. Turn the J38816-A counterclockwise.
    • Tighten the water pump to 100 Nm (74 ft. lbs.).
  1. Remove the support plate from the water housing crossover.



  1. Connect the water pump cover to the heater return hose.
  2. Install the water pump cover to the water housing crossover.
  3. Install the water pump cover bolts. Tighten Tighten the water pump cover bolts to 10 Nm (89 inch lbs.) .



  1. Position the J 38185 to the clamp in order to connect the radiator outlet hose to the thermostat housing.



  1. Install the water pump drive belt (4).



  1. Place the water pump belt shield in position.
  2. Install the water pump belt shield fasteners.
    • Tighten the water pump belt shield fasteners to 10 Nm (89 inch lbs.) .
  1. Install the oil level indicator tube nut.
    • Tighten the oil level indicator tube nut to 10 Nm (89 inch lbs.) .
  1. Install the secondary AIR injection control valve.
  2. Install the air cleaner assembly.
  3. Install the upper filler panel.
  4. Fill the cooling system.

Ask Your Own Cadillac Question
Customer reply replied 6 years ago
Thanks. Are there any other sort of issues that would cause overheating? Already replaced thermostat
Cadillac Mechanic: Tim West, ASE Certified Technician replied 6 years ago
When is it overheating mainly highway? Are both the radiator hoses getting warm?
Ask Your Own Cadillac Question
Customer reply replied 6 years ago
Overheats after 15 minutes of engine running. Top hose is hot. Coolant in reservior is cold. Overheatswhen sitting idle or when running. Engine runs fine tho...
Cadillac Mechanic: Tim West, ASE Certified Technician replied 6 years ago

I would make sure there are no hot spots on the radiator. if there is a hot spot it could indicate a clog in the radiator.

Also, blown head gaskets are pretty common on this vehicle as well. I would recommend getting a kit from the parts store that will check for exhaust gasses in the coolant.
IF there is exhaust gasses in the coolant then the head gaskets will need to be replaced.
Tim West
Tim West, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4,638
Experience: Ase certified service manager
Verified
Tim West and 87 other Cadillac Specialists are ready to help you
Ask your own question now
Ask Tim West Your Own Question
Tim West
Tim West
Tim West, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4,638
4,638 Satisfied Customers
Experience: Ase certified service manager

Tim West is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Jerry Newton

Jerry Newton

Cadillac Technician

1,569 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Dave Nova

Dave Nova

Cadillac Technician

1,522 satisfied customers

ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

Cadillac Mechanic

1,001 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

John

John

ASE Certified Technician

941 satisfied customers

ASE CERTIFICATIONS A1-A8 & L1 / 40 YEARS AUTOMOTIVE EXPERIENCE

George H.

George H.

ASE Certified Technician

774 satisfied customers

ASE Master Tech 15+ Years

Chris (aka- Moose)

Chris (aka- Moose)

Cadillac Technician

734 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

688 satisfied customers

GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Cadillac Questions
It has a lean condition and we are repairing the exhaust.
it has a lean condition and we are repairing the exhaust. getting lean code. … read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
1997 Cadillac Deville - I replaced the head gaskets,
1997 Cadillac Deville - I replaced the head gaskets, obviously had to tear everything off. It is all back together now but won't start. It says Theft System Problem - car may not restart.… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Over heating replaced radiator water pump and thermostat,
Over heating replaced radiator water pump and thermostat, Still over heating, … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
3,943 satisfied customers
I get a 2011 Cadillac DTS, After replacing the water pump
Hi I get a 2011 Cadillac DTS , After replacing the water pump the car won't crank any more. There is no gear indicator light, and shifter won't move. All fuses are good, all the grounds at the engine … read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,569 satisfied customers
Had to replace the radiator in my 1996 Cadillac Deville, due
Had to replace the radiator in my 1996 Cadillac Deville, due to the right side fan popped out of the gromet at the bottom where it slides in. When I replaced it with a new one, the fan did the same th… read more
Don - Mo Lurch
Don - Mo Lurch
Cadillac Technician
Vocational, Technical or Trade Scho
688 satisfied customers
I have a 1996 Cadillac Deville and my engine is run hot. I
i have a 1996 Cadillac Deville and my engine is run hot. I have replaced radiator, water pump, water pump housing assembly and thermostat. I pressure tested for leaks which pressure stayed @ 16psi for… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I changed the water pump but can't replace the nelt. 04
I changed the water pump but can't replace the nelt … read more
Todd M
Todd M
Owner
ASE Certification
1,293 satisfied customers
I have a repair shop in GA. We replaced the water pump and
Hello, I have a repair shop in GA. We replaced the water pump and crossover manifold gaskets on a 02 Deville in June. The customer reversed the credit card charges yesterday. We did the water pump, th… read more
Todd M
Todd M
Owner
ASE Certification
1,293 satisfied customers
I have changed water pump ,thermastat,radiater andthere is
i have changed water pump ,thermastat,radiater andthere is no water in my oil but the motorisstill overheating … read more
Marvin the Mechanic
Marvin the Mechanic
82 satisfied customers
Running hot before and after new radiator and thermostat.
Running hot before and after new radiator and thermostat. Exhaust in coolant I'm told … read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
45 satisfied customers
Overheating i changed the radiator thermostat and water pump
Overheating i changed the radiator thermostat and water pump it only seems to happen when on thruway … read more
rpmdiag
rpmdiag
High school
7,115 satisfied customers
Can you change only the front head gasket on a northstar
can you change only the front head gasket on a northstar engine on is there any other way to seal a leak on a head gasket … read more
Gunvir Singh
Gunvir Singh
1,712 satisfied customers
Can I replace only the front head gasket on a 2000 northstar
can I replace only the front head gasket on a 2000 northstar engine or is there a different way to seal a small leak on a head gasket … read more
ggrote1
ggrote1
Vocational, Technical or Trade Scho
13 satisfied customers
I have a head gasket on a 2001 Cadillac Deville. I don't
Hello, I have a blown head gasket on a 2001 Cadillac Deville. I don't have the money to put it in a shop so I'm going to fix it myself. Can y'all give me steps on how to do it?… read more
George H.
George H.
ASE Certified Technician
Associate Degree
774 satisfied customers
I have a 64 El Dordo head gasket. The thin is it has been
I have a 64 El Dordo blown head gasket . The thin is it has been sitting for 4 yrs .what might I b getting into? … read more
roy
roy
Associate Degree
3 satisfied customers
200 cadillac head gasket replacement 2001 northstar engine?
200 cadillac head gasket replacement 2001 northstar engine? … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
I have a 1994 cadillac sedan Denville New head gasket, New
I have a 1994 cadillac sedan Denville New head gasket, New water pump, new thermostat, New temperature control, mouted on the thermostat housing. And the car is still over heating when I turn the heat… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Had the head gaskets replaced and the bottom engine seals
had the head gaskets replaced and the bottom engine seals repaired on my 2002 Cadillac deville with 62k miles by local Cadillac dealer. Had it back because it was overheating. Dealer replaced the over… read more
roy
roy
Associate Degree
3 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x