Water in the transmission fluid

Asked by Jboneso86 Apr 01, 2020 at 12:26 PM about the 2003 Pontiac Grand Prix GT

Question type: General

I just checked my fluids and my transmission fluid
is watery and black someone if you got any ideas
please help

1 Answer
2,220

RickMN answered 4 years ago

Most vehicles have a transmission cooler inside the radiator. When that fails, transmission fluid and coolant mix and destroy your transmission. Do NOT drive your vehicle. Have it towed to a shop and diagnosed. If they determine the trans cooler has failed, you'll need a new radiator and a full transmission flush at the very least.

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