1AACD00070-ACDelco Professional Engine Water Pump

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ACDelco Professional Engine Water Pump ACDelco 252-845

ACDelco 1AACD00070 1AACD00070
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Part 1AACD00070
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AC DELCO
Brand #: 252-845

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Description

Vehicle Fit

Warranty & Shipping
How-To & Tools

Part Details

  • Includes:   Gasket
  • Also Used For:   LS Swap
  • Product Line:   ACDelco Professional

Item Condition: New

1 Year Warranty

This item is backed by our 1-year warranty. In the event this item should fail during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories.

Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, or Canada for this item.

Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories.

How to Replace Engine Water Pump 00-03 GMC Yukon SUV

Created on: 2021-01-16

Watch this video to learn how to fix a leaking or broken water pump. The experts at 1A Auto will show you how to replace the water pump on your 99-04 Chevy Silverado or Tahoe, or GMC Sierra or Yukon.

  1. step 1 : Remove Intake Tube
    • Start by using an 8 millimeter socket wrench to disconnect the negative battery cable.
    • Loosen the two clamps by the throttle body and air box.
    • Use a small flathead screwdriver to break the seal.
    • Lift the intake tube out.
  2. step 2 : Remove fan shroud
    • Remove the two 10 millimeter bolts with your socket wrench.
    • Unclip the small hose from the shroud.
    • Remove pins around fan shroud and gently work hose back and forth to pull fan shroud out.
  3. step 3 : Remove fan
    • Use a large adjustable wrench on the center nut.
    • Apply force on the wrench to break it loose.
    • Carefully pull fan out and set aside.
  4. step 4 : Remove serpentine belt
    • Start by double checking that your routing diagram is legible.
    • Draw out your own if it isn't to save time and confusion later.
    • Use your socket ratchet to loosen the 15 millimeter bolt located on the tensioner.
    • Turn your ratchet clockwise to release the tension and remove the belt.
  5. step 5 : Drain radiator and disconnect hoses from water pump
    • Release lower radiator hose and drain fluid into your drain pan.
    • Use your pliers to slowly squeeze the clamp and pull it back to drain the fluid into your catch pan.
    • Disconnect radiator hose by loosening and pulling back the clamp.
    • Use your small flathead screwdriver to gently pry up the hose and wiggle it off.
    • Make sure any water has drained out of it and set aside. Finally disconnect heater hoses.
    • Ensure that your catch pan is underneath to catch any water.
  6. step 6 : Remove tension arm
    • Use your wrench to remove the tension arm from the water pump.
    • Set aside.
  7. step 7 : Remove water neck and remove pump
    • Use your 10 millimeter socket wrench to remove the two bolts.
    • Use your torque wrench to remove the six bolts on the water pump.
    • Then using a sharp razor blade, scrape off any residual gasket material that could create a bad seal.
  8. step 8 : Install 1A Auto water pump
    • Put the new gasket plates on your 1A Auto water pump using the two bolts.
    • Seat the new pump and place bolts and use your torque wrench to gently snug them up.
    • Go back and torque them between 22 and 24 foot pounds.
    • Take the new O-ring that came with your 1A Auto and put it on your thermostat housing.
  9. step 9 : Reassemble
    • Reconnect all your hoses.
    • Put your belt tensioner back on and put your serpentine belt back on using your diagram.
    • Reassemble your fan, fan shroud, and intake pipe.
    • Finally refill with a 50/50 mixture of Dex Cool.
    • Listen for the sound of any leaks to make sure everything is connected properly.
    • Finally, reconnect the battery and start up the engine and run it for 30 seconds or so to circulate the coolant.
    • Double check your level of coolant to make sure it is at the right spot, and you are good to go.

Tools needed for replacement

  • General Tools

    Razor Blade / Gasket Scraper

    Drain Pan

  • Ratchets & Related

    Ratchet

  • Screwdrivers & Related

    Flat Blade Screwdriver

  • Sockets - Metric

    15mm Socket

    8mm Socket

    10mm Socket

Installation Video
Watch video

Fits these Makes

Year Make Model Description
2004Buick Rainier Buick Rainier V8 5.3L (8th Vin Digit P) ACDelco Professional Engine Water Pump
2002-2003Cadillac Escalade Cadillac Escalade V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2002-2003Cadillac Escalade Cadillac Escalade V8 6.0L (8th Vin Digit N) ACDelco Professional Engine Water Pump
2003Cadillac Escalade ESV Cadillac Escalade ESV V8 6.0L (8th Vin Digit N) ACDelco Professional Engine Water Pump
2002-2003Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L (8th Vin Digit N) ACDelco Professional Engine Water Pump
2002-2003Chevrolet Avalanche 1500 Chevrolet Avalanche 1500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2003Chevrolet Express 1500 Van Chevrolet Express 1500 Van V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2003-2005Chevrolet Express 2500 Van Chevrolet Express 2500 Van V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2003-2005Chevrolet Express 2500 Van Chevrolet Express 2500 Van V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
2003-2005Chevrolet Express 2500 Van Chevrolet Express 2500 Van V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2003Chevrolet Express 3500 Van Chevrolet Express 3500 Van V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
1999-2003Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
1999-2003Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2001-2003Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2002-2003Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2003Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 6.0L (8th Vin Digit N) ACDelco Professional Engine Water Pump
2001-2003Chevrolet Silverado 1500 HD Chevrolet Silverado 1500 HD V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2003Chevrolet Silverado 1500 HD Chevrolet Silverado 1500 HD V8 6.0L (8th Vin Digit N) ACDelco Professional Engine Water Pump
1999-2000Chevrolet Silverado 2500 Chevrolet Silverado 2500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
1999-2003Chevrolet Silverado 2500 Chevrolet Silverado 2500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001-2003Chevrolet Silverado 2500 Chevrolet Silverado 2500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001-2003Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2000-2003Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2002-2003Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2000-2003Chevrolet Tahoe Chevrolet Tahoe V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
2000-2003Chevrolet Tahoe Chevrolet Tahoe V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2002-2003Chevrolet Tahoe Chevrolet Tahoe V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2003GMC Savana 1500 Van GMC Savana 1500 Van V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2003-2005GMC Savana 2500 Van GMC Savana 2500 Van V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2003-2005GMC Savana 2500 Van GMC Savana 2500 Van V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
2003-2005GMC Savana 2500 Van GMC Savana 2500 Van V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2003GMC Savana 3500 Van GMC Savana 3500 Van V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
1999-2003GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
1999-2003GMC Sierra 1500 GMC Sierra 1500 V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
2001GMC Sierra 1500 GMC Sierra 1500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001-2003GMC Sierra 1500 GMC Sierra 1500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2002-2003GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
1999-2003GMC Sierra 2500 GMC Sierra 2500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
1999-2000GMC Sierra 2500 GMC Sierra 2500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2001-2003GMC Sierra 2500 GMC Sierra 2500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001-2003GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2001-2003GMC Sierra 3500 GMC Sierra 3500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2000-2003GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2001-2003GMC Yukon GMC Yukon V8 4.8L (8th Vin Digit V) ACDelco Professional Engine Water Pump
2002-2003GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2000-2003GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit T) ACDelco Professional Engine Water Pump
2002-2003GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit Z) ACDelco Professional Engine Water Pump
2000-2003GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2003Hummer H2 Hummer H2 V8 6.0L (8th Vin Digit U) ACDelco Professional Engine Water Pump
2003-2004Isuzu Ascender Isuzu Ascender V8 5.3L (8th Vin Digit P) ACDelco Professional Engine Water Pump
2005-2006Saab 9-7X Saab 9-7X V8 5.3L (8th Vin Digit M) ACDelco Professional Engine Water Pump

Part Interchange

Brand Label Part Number
DIY Solutions EWP00003

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

AC DELCO
Brand #: 252-845
Product Reviews
5.00/ 5.0 1
1review
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
1
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0
0
0
So far so good
July 7, 2017
I've put a couple hundred miles on the new water pump. No issues whatsoever thus far. Re-used the old thermostat. Everything I needed including gaskets came with the pump. Instructional video on YouTube helped. I would recommend looking up other videos on YouTube for help getting the radiator fan off. The ratchet strap method worked well for me. Great product.
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Does the AC Delco professional water pump come with gaskets? 2002 gmc Sierra 4.8 vin V
December 21, 2015
10
Yes!
December 21, 2015
10
Yes, this will come with the Gasket. This is the AC Delco part and will come exactly as you would receive from the dealer. Thank you and have a great day!
December 29, 2015
10
Be sure the box you get is taped good on all seams Mostly on the bottom were small bags like gaskets can & have fallen out.
February 25, 2017
Does this water pump come with the fan clutch?
March 20, 2018
10
The fan clutch is not included with the water pump. Thank you!
March 20, 2018
10
Nope, no fan clutch. Just the pump Not nearly as sturdy as the stock pump. It works but if I had to do it again I’d get an OEM even if it cost more.
March 20, 2018
10
No it does not
March 20, 2018
10
Nope
March 20, 2018
Customer service

877-844-3393

Monday - Friday 8:00am - 9:30pm ET
Saturday - Sunday 8:00am - 4:30pm ET


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