How to replace the water pump on Chevrolet Trailblazer?

The first step to replace the Water Pump involves draining the cooling system. Open the clamps on the Throttle Body air duct and maf/iat sensor before removing the outlet duct bolt and duct. Disassemble the 5.3l/6.0l engine's accessory drive belt tensioner before taking out the cooling fan and shroud. With j 38185 hose clamp pliers in hand you can shift the inlet hose clamp at the Water Pump and extract the inlet hose. Shift the outlet hose clamp to the side and disconnect both ends of the outlet hose. Also detach the auxiliary heater inlet and outlet hose/pipe nut. Use the j 38185 hose clamp pliers to shift the Throttle Body clamp before taking the hose away from its connection. Eliminate the Water Pump accessory heater hose clamps and take off the inlet and outlet tubes from their positions. Take out the Water Pump from its bolts and discard both gaskets along with the Water Pump itself. New bolts and gaskets must be installed to the Water Pump along with new gaskets before tightening the bolts to 15 n.m (11 lb ft) first and then to 30 n.m (22 lb ft) on the final pass. Position and tighten the auxiliary heater hose/pipe nut to 10 n.m until you secure it then attach both ends of the hose to the Throttle Body and inlet/outlet end. Reverse the steps to install Water Pump inlet and outlet hoses while moving the auxiliary heater hose clamps between their correct positions first. Put back the cooling fan assembly and shroud plus replace the accessory belt tensioner. Secure the air cleaner outlet sidepipe bolt and Throttle Body clamps with torque to 10 n.m (89 lb in) along with maf/iat sensor clamps at 7 n.m (62 lb in). Finally, fill the cooling system.

OEM Chevrolet Trailblazer Water Pump

H2O Pump

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7 Water Pumps found

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Chevrolet Trailblazer Water Pump Part Number: 55505442
$108.73 MSRP: $194.17
You Save: $85.44 (44%)
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Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
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Chevrolet Trailblazer Water Pump Housing Part Number: 25204277
$124.75 MSRP: $223.77
You Save: $99.02 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump; Water Pump Assembly; Pump, Engine Coolant
- Replaces: 55505441, 55515877
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
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Chevrolet Trailblazer Auxiliary Pump Part Number: 13546434
$75.84 MSRP: $135.42
You Save: $59.58 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly-Auxiliary Water; Pump, Heater Coolant Flow; Pump, Engine Coolant
- Replaced by: 13551861
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2022 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
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Chevrolet Trailblazer Water Pump Part Number: 12620226
$145.44 MSRP: $260.88
You Save: $115.44 (45%)
Product Specifications
- Other Name: Pump, Water; Pump, Engine Coolant
- Replaces: 24576952
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | Base, LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer 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:
- 2006-2007 Chevrolet Trailblazer | LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Trailblazer 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:
- 2007-2009 Chevrolet Trailblazer | Base, LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Trailblazer Water Pump Part Number: 12707765
$168.25 MSRP: $301.80
You Save: $133.55 (45%)
Product Specifications
- Replaced by: 25208565
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.3 L GAS

Chevrolet Trailblazer Water Pump

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It is worth explaining that Water Pump in Chevrolet Trailblazer automobile plays an important role in temperate distribution providing fluent circulation of the coolant between the radiator and the engine where the gathered heat produced during the combustion process is absorbed. Almost all today's water pumps are made of aluminum and are belted to the crankshaft, although electric water pumps are getting to be used more frequently in recent times. A standart set of these pumps comprises a shaft with bearings, a belt driven pulley, and an impeller for pumping the coolant. Despite a water pump's failure being rare, the signs include leaking of coolant, loud noises associated with worn bearings, and undue heat in the engine. There are high-performance water pumps especially for high-performance engines, which provide enhancement in coolant flow and are more efficient than the conventional ones in terms of power consumption. Another type is the electric water pumps which has such advantages as incorporation of coolant circulation not depending on the RPM of the engine and post shut down cooling.

Chevrolet Trailblazer Water Pump Parts Questions & Experts Answers

Water Pump
12620226
Q: How to replace the water pump on Chevrolet Trailblazer?
A:
The first step to replace the Water Pump involves draining the cooling system. Open the clamps on the Throttle Body air duct and maf/iat sensor before removing the outlet duct bolt and duct. Disassemble the 5.3l/6.0l engine's accessory drive belt tensioner before taking out the cooling fan and shroud. With j 38185 hose clamp pliers in hand you can shift the inlet hose clamp at the Water Pump and extract the inlet hose. Shift the outlet hose clamp to the side and disconnect both ends of the outlet hose. Also detach the auxiliary heater inlet and outlet hose/pipe nut. Use the j 38185 hose clamp pliers to shift the Throttle Body clamp before taking the hose away from its connection. Eliminate the Water Pump accessory heater hose clamps and take off the inlet and outlet tubes from their positions. Take out the Water Pump from its bolts and discard both gaskets along with the Water Pump itself. New bolts and gaskets must be installed to the Water Pump along with new gaskets before tightening the bolts to 15 n.m (11 lb ft) first and then to 30 n.m (22 lb ft) on the final pass. Position and tighten the auxiliary heater hose/pipe nut to 10 n.m until you secure it then attach both ends of the hose to the Throttle Body and inlet/outlet end. Reverse the steps to install Water Pump inlet and outlet hoses while moving the auxiliary heater hose clamps between their correct positions first. Put back the cooling fan assembly and shroud plus replace the accessory belt tensioner. Secure the air cleaner outlet sidepipe bolt and Throttle Body clamps with torque to 10 n.m (89 lb in) along with maf/iat sensor clamps at 7 n.m (62 lb in). Finally, fill the cooling system.