How to replace a water pump on Chevrolet Express 2500?

Begin replacement of the Water Pump by disconnecting the battery negative cable before taking off the air cleaner assembly and draining the engine cooling system. You must first take off the air intake duct from the Throttle Body then unplug the coolant recovery reservoir plus detach the upper Fan Shroud. Take out the Drive Belt and Fan Clutch unit from the vehicle engine. First take off the Water Pump Pulley bolts and pulley but keep connecting the radiator and heater hoses and bypass hose to the Water Pump. Pull off the Water Pump bolts before pulling out the Water Pump assembly with its gasket. Examine and clean both engine block and Water Pump mounting bolt areas before testing their thread strength. Place the gasket and the water coolant pump over the bolts then apply teflon pipe sealant gm p/n 12346004 or equivalent as a sealant on each Water Pump mounting bolt. Tighten the bolts to a torque value of 42 nm (31 ft. Lbs.). Connect the Water Pump, heater outlet, and radiator outlet hoses. Then put the Water Pump Pulley and its bolts in place and perform a torque of 25 nm (18 ft. Lbs.). Put back the Drive Belt, Fan Clutch, upper Fan Shroud, coolant recovery reservoir, air intake system and air filter assembly. Close the process by hooking up the negative Battery Cable to its terminal connection. After filling the engine coolant system you need to remove air from it then check for any fluid leakage.

OEM Chevrolet Express 2500 Water Pump

H2O Pump

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11 Water Pumps found

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Chevrolet Express 2500 Water Pump Part Number: 89060527
$232.95 MSRP: $456.07
You Save: $223.12 (49%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Kit, Water; Water Pump Assembly; Pump Kit, Engine Coolant
- Replaces: 12528917, 89017748, 12532528
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2006 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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Chevrolet Express 2500 Water Pump Part Number: 12703898
$187.62 MSRP: $364.18
You Save: $176.56 (49%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Kit-Water *Use Together With Gask; Pump Kit, Engine Coolant
- Replaces: 12681184, 12686763, 19256261
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 Water Pump Part Number: 12681417
$289.52 MSRP: $561.92
You Save: $272.40 (49%)
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Product Specifications
- Other Name: Pump Kit-Water; Pump Kit, Engine Coolant
- Replaced by: 19434033
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2020 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 Water Pump Part Number: 19168610
$223.61 MSRP: $433.95
You Save: $210.34 (49%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Kit, Water; Water Pump Assembly; Pump Kit, Engine Coolant
- Replaces: 12534772, 12530176, 88894036
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1998 Chevrolet Express 2500 | Base, LS | 8 Cyl 6.5 L DIESEL
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Chevrolet Express 2500 Water Pump Part Number: 19168609
$249.47 MSRP: $484.18
You Save: $234.71 (49%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Kit, Water; Pump Kit, Engine Coolant
- Replaces: 88894035, 12456231
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2002 Chevrolet Express 2500 | Base, LS | 8 Cyl 6.5 L DIESEL
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Chevrolet Express 2500 Water Pump Part Number: 12725728
$282.59 MSRP: $553.28
You Save: $270.69 (49%)
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Product Specifications
- Other Name: Pump, Engine Coolant
- Replaced by: 12735409
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2023 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L GAS
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Chevrolet Express 2500 Water Pump Part Number: 12707676
$166.89 MSRP: $493.96
You Save: $327.07 (67%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Pump Assembly
- Replaced by: 12740339
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2024 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS
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Chevrolet Express 2500 Water Pump Part Number: 12645126
$168.76 MSRP: $327.52
You Save: $158.76 (49%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump, Engine Coolant
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2022 Chevrolet Express 2500 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Express 2500 Water Pump Part Number: 12637105
Product Specifications
- Other Name: Pump, Engine Coolant
- Replaces: 98098889, 97372515, 98031233
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2016 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Water Pump Part Number: 89018166
Product Specifications
- Other Name: Pump Kit, Water; Water Pump Assembly
- Replaces: 12458935, 12456113, 88894290, 89017439, 89018040
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2007 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
View related parts
Chevrolet Express 2500 Water Pump Part Number: 12600767
Product Specifications
- Other Name: Pump, Water; Engine Water Pump; Water Pump Assembly
- Replaces: 12587305
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS

Chevrolet Express 2500 Water Pump

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Chevrolet Express 2500 Water Pump Parts and Q&A

Water Pump
89060527
Q: How to replace a water pump on Chevrolet Express 2500?
A:
Begin replacement of the Water Pump by disconnecting the battery negative cable before taking off the air cleaner assembly and draining the engine cooling system. You must first take off the air intake duct from the Throttle Body then unplug the coolant recovery reservoir plus detach the upper Fan Shroud. Take out the Drive Belt and Fan Clutch unit from the vehicle engine. First take off the Water Pump Pulley bolts and pulley but keep connecting the radiator and heater hoses and bypass hose to the Water Pump. Pull off the Water Pump bolts before pulling out the Water Pump assembly with its gasket. Examine and clean both engine block and Water Pump mounting bolt areas before testing their thread strength. Place the gasket and the water coolant pump over the bolts then apply teflon pipe sealant gm p/n 12346004 or equivalent as a sealant on each Water Pump mounting bolt. Tighten the bolts to a torque value of 42 nm (31 ft. Lbs.). Connect the Water Pump, heater outlet, and radiator outlet hoses. Then put the Water Pump Pulley and its bolts in place and perform a torque of 25 nm (18 ft. Lbs.). Put back the Drive Belt, Fan Clutch, upper Fan Shroud, coolant recovery reservoir, air intake system and air filter assembly. Close the process by hooking up the negative Battery Cable to its terminal connection. After filling the engine coolant system you need to remove air from it then check for any fluid leakage.