1997 Chevy Truck Transmision trouble

RUEBEN

MEMBER
1997 CHEVROLET TRUCK
V8
2WD
AUTOMATIC
127,000 MILES

My son's truck started making a winding noise from the front of the engine. Starts when truck is warmed up and gets louder over time. Transmission shifts good when cool. But as noise get louder the transmission seems to hesitate when shifting.
the transmssion fluid also looks very thin, almost like water and oil mixture. There also seems to be a leak of transmission and/or coolant fluid.
how can I trouble shoot the problem?

Monday, February 2nd, 2009 AT 10:43 PM

1 Reply

2CARPRO JACK

MECHANIC
11,533 POSTS

I cant really think of anything on the front of the engine that will change the way the trans shifts. First remove htedrive belt after it has been warmed up and is making the noise, if the noise stays it isnt belt driven adn may be a trans pump whining and transmitting the noise through the engine. All trans fluid is relatively thin, the color and smell is what you are looking for. It should be red adn smell kind of like plastic. If it is dark and smells almost like aburnt clutch, you may have a problem. Try a trans service first, at that mileage you should be on your second one by now. Is or has the check engine light come on? If so have the PCM scanned for trouble codes

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Tuesday, February 3rd, 2009 AT 7:46 AM