Water Pump and Water Pump Housing Replacements

Some water pumps may have been replaced when the actual failure was the water pump housing on some 2016-2019 Encore, Cruze, Malibu, Spark, Volt, and 2018-2019 Equinox and Terrain models equipped with engine RPOs LE2, LFV, LV7, L3A, and LYX. New water pumps are being returned to the Warranty Parts Center with the old water pump housing installed. These conditions may be due to the description of the parts in the Electronic Parts Catalog (EPC).

 

Water Pump Housing

If the water pump requires replacement for a noise, leak or poor coolant flow, refer to “Housing w/PMP” in the EPC. The water pump housing is a separate component. (Fig. 19)

Fig. 19

 

Water Pump

If the water pump requires replacement for a crack or leak, refer to “Pump, Wat” in the EPC. The water pump housing comes pre-installed on the water pump as an assembly. (Fig. 20)

Fig. 20

 

In addition, be sure to use the correct labor code when replacing the water pump housing or the water pump. These are different codes and using the incorrect code could result in a debit of the claim.

Refer to Bulletin #18-NA-335 for additional information.

 

– Thanks to Steve Bruder

 

Service 4WD Message
Dead Battery after Remote Start

2 Comments

  1. On this new engine, the water pump assembly (complete) is referred to as the “Pump, Water”. The housing with the impeller is referred to as the “Housing, W/Pump”. This is correct in the parts catalog. This water pump is a unique configuration from what has been used in the past since, as an assembly, it bolts to the side of the engine, completely outside of the water jacket.

  2. Sounds like the terminology in the GM Parts Catalog is backwards. Up until now, the water pump was the component that attached to the pulley with the impeller inside.