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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I had my trans fluid changed and now it is blowing out the

Customer Question

i had my trans fluid changed and now it is blowing out the breather hose , fluid level is just above cold mark when warmed up , It's on a 2002 s10 4x4 4.3 litre
JA: When was the last time your transmission fluid was checked? Changed?
Customer: 3 mons. ago it was changed and it's been leaking ever since
JA: What is the model of your '02 Chevy?
Customer: S-10 QUAD CAB
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: just want to find out if it's an easy fix or cost me , i'm retired and limited on finances
JA: Anything else you think the mechanic should know?
Customer: It's been a good running truck other wise
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Chevy
Expert:  Chad Farhat replied 1 year ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be be posting a replay ASAP

Expert:  Chad Farhat replied 1 year ago.

what is the mileage?

is the transmission acting up now ?

you are definitely low on fluid , we need to be at the warm mark on the trans fluid when warmed up ?

they usually use cheap gaskets , if they did a filter & gasket and they did not torque the transmission pan bolts & in the right sequence it will leak.

it should be an easy fix , 1 hour job , filter kit around $30 + fluid .

Please let me know

Thank You
Chad Farhat
ASE Certified Technician

Customer: replied 1 year ago.
it's not leaking from the pan it's blowing it out the breather tube the little sponge gets saterated and then it drips on to the exhaust pipe
Customer: replied 1 year ago.
milage is about 228000 kms
Expert:  Chad Farhat replied 1 year ago.

if you blowing out the tube and no leaks , it is building pressure internally ,

so when you checked and it was a the cold mark it lost the fluid from blowing it out the tube correct ?

Customer: replied 1 year ago.
correct, it's going out the breather tube
Expert:  Chad Farhat replied 1 year ago.

when that happens , it is building pressure internally , is this original transmission ?

Customer: replied 1 year ago.
not sure ,bought truck used about 3 years ago had no problems before this
Expert:  Chad Farhat replied 1 year ago.

if you know a good transmission shop with a capable scanner, they can actually run test for pump, line pressure and clutch volume index , and tell you if the internal is bad

like a GM TEch II scanner or equivalent .

Expert:  Chad Farhat replied 1 year ago.

Hey how are you

Did you get it fixed or you like more help on it please just let me know

Chad farhat

ASE Certified Technician