Reference and Interchange Numbers
Common references include:
- ACDelco 252-822
- GM 89036357
- Airtex AW5097
- Gates WP-9234
- US Motor Works US5097
- GMB 130-7700
- ACDelco 251-731
- GM 12622316
- GM 12620226
- GM 24576952
- GM 12582431
- GM 12572988
- CP5097
- WP9234
- 58588
GM identifies 89036357 as an ACDelco Gold engine water pump. Compare the number, housing, pulley and mounting configuration with the original pump before installation.
Product Specifications
| Specification | Description |
|---|---|
| Brand | ACDelco Gold |
| Part number | 252-822 |
| GM reference | 89036357 |
| Pump type | Mechanical engine water pump |
| Drive type | Serpentine belt |
| Pump material | Aluminum |
| Flow volume | Standard |
| Rotation | Counterclockwise |
| Fitment | Vehicle-specific |
| Gaskets and seals | Supplied according to package contents |
| Thermostat | Not listed as included |
The thermostat is not identified as part of the standard 252-822 package. Verify the box contents before beginning repairs rather than discovering the omission after the coolant is already on the floor.
Designed for GM Atlas Engines
The Atlas engine family includes several related inline engines:
- 2.8L LLV inline-four
- 2.9L LLV inline-four
- 3.5L L52 inline-five
- 3.7L LLR inline-five
- 4.2L LL8 inline-six
These engines share design architecture, allowing the same basic pump family to cover vehicles ranging from the compact Colorado pickup to the larger Trailblazer and Envoy SUVs.
That shared architecture does not extend to the optional LS-based V8 engines. Always confirm displacement and engine code.
What Does the Water Pump Do?
The serpentine belt turns the pump pulley and impeller. The impeller moves coolant through the engine, heater circuit and radiator, allowing heat to leave the cylinder block and head.
When coolant circulation falls, engine temperature can rise rapidly—especially during low-speed driving, towing or extended idling.
For help separating pump trouble from thermostat failure, read our bad thermostat versus bad water pump guide.
Features and Benefits
- Manufactured for vehicle-specific fit and function
- Aluminum pump housing
- Standard-volume coolant flow
- Coated seals intended to improve durability
- Factory-style mounting arrangement
- Designed for serpentine-belt operation
- Gaskets and seals packaged as applicable
- Tested by ACDelco for leak-free operation
- Covers multiple GM Atlas-engine applications
ACDelco Gold components are premium aftermarket parts. Despite the GM reference number, “Gold” does not automatically mean the pump is the exact component originally installed on the assembly line.
Symptoms of a Failing Water Pump
Common warning signs include:
- Coolant leaking near the front of the engine
- Dried coolant residue around the pump
- Leakage from the pump’s weep hole
- Grinding or growling bearing noise
- Pulley wobble or shaft play
- Serpentine-belt misalignment
- Repeated low-coolant warnings
- Rising engine temperature
- Overheating at idle or under load
- Weak cabin heat caused by poor circulation
These symptoms can overlap with a leaking hose, restricted radiator, failed thermostat or trapped air. Follow our coolant-leak diagnostic guide before replacing parts.
Installation Recommendations
- Confirm the year, model, engine size and OE number.
- Allow the engine to cool completely.
- Disconnect the negative battery cable.
- Drain the coolant into a suitable container.
- Remove the fan, shroud and serpentine belt as required.
- Inspect the belt, tensioner, idlers and fan clutch.
- Compare the new pump with the removed assembly.
- Clean the sealing surface without gouging the aluminum.
- Install the supplied gasket according to ACDelco instructions.
- Torque all fasteners to the vehicle’s service specification.
- Refill with the correct coolant.
- Bleed trapped air and confirm stable operating temperature.
- Inspect for leakage after the final road test.
Never remove a pressure cap from a hot cooling system. Steam and pressurized coolant are impressively efficient at ruining an otherwise productive afternoon.
If the cooling system contains rust, mixed coolant or heavy deposits, consult our safe cooling-system flush guide. Our coolant-types guide explains why coolant should be selected by specification rather than color.
Frequently Asked Questions
What vehicles does ACDelco 252-822 fit?
It fits select 2002–2012 GM-platform vehicles equipped with Atlas 2.8L, 2.9L, 3.5L, 3.7L or 4.2L inline engines. Major applications include the Colorado, Canyon, Trailblazer, Envoy, Rainier and H3.
Does 252-822 fit a 5.3L Trailblazer or Envoy?
No. The 5.3L V8 belongs to the LS-based engine family and uses a different water pump.
Does it fit the Chevrolet Trailblazer SS?
No. The Trailblazer SS uses a 6.0L LS2 V8 and requires a different pump.
Does it fit a Hummer H3 Alpha?
No. The Alpha uses a 5.3L V8. This pump fits the listed H3 models with 3.5L or 3.7L inline-five engines.
Are 252-822 and 89036357 the same part reference?
Yes. ACDelco identifies the pump as 252-822, while 89036357 is its associated GM reference number.
Is the thermostat included?
The standard ACDelco 252-822 listing does not identify a thermostat as included. Confirm the package contents and order a compatible thermostat separately if required.
Is this an electric water pump?
No. It is a mechanical water pump driven by the serpentine belt.
Should the thermostat be replaced at the same time?
Replacing an aging thermostat may be sensible while the cooling system is drained, but it is a separate component. Diagnose the failure and use the correct thermostat for the exact engine.
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