Rick's Free Auto Repair Advice

Water pump leaks on GM

Leaking water pump on GM

Water pumps are built with a hole directly below the seal assembly. The purpose of the hole is too allow the seal to breathe as it expands and contracts from heat. During those periods of expansion and contraction, a small amount of coolant may seep past the seal and drip out the hole. To most of us, coolant coming out of the “weep” hole is the sign of a pump about to give up the ghost. In this case however, it’s considered normal. Changing the pump will NOT solve the problem. Well, actually, GM doesn’t consider it a problem. But enough customers have complained that GM has come out with a band-aid fix. It’s a “coolant collector,” part number 12573729 that snaps around the neck of the pump to collect and coolant that manages to escape. Think of it as a water pump diaper. The problem affects the following vehicles with the 2.4 liter engine:

1996-1998 Buick Skylark/Olds Achieva, • 1996-2002 Chev Cavalier, • 1996-2001 Pontiac Grand AM, • 1996-2002 Pontiac Sunfire, • 1997-1999 Chev Malibu, • 1999-2001 Olds Alero


© 2012 Rick Muscoplat

Posted on by Rick Muscoplat

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