GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello and thanks for your question. My name is ***** ***** I will do all I can to help.
Have you had to add any coolant to it at all recently?
If it's leaking towards the front. Then I do not believe it is transmission fluid.
transmission is located basically from the drivers door back, Where did you see this leak occur in relation to position of the truck? is it leaking more towards the front? engine compartment? or very front like radiator/grill area?
Alright, it's possible it could be the transmission then in that case. Have you taken a flashlight yet and looked at the transmission pan yet to see if there was any drip forming on the pan or the back of the tailshaft where the driveshaft goes into the transmission yet by chance?
It's going to look like this, this is the transmission pan and the gasket can and do leak over time.
If you see the transmission pan is wet, or there are any drips on the transmission pan bolts, it would likely need just a pan gasket which is no biggie.
Yes it does, take your time and just reply later and it will send me an alert.
It's possible, and if that is the case, then it's likely the transmission, because transmissions can and tend to leak more depending on positioning of the vehicle and coolant leaks usually aren't that way. try the cardboard under it on a hill and see if that will show any signs of leakage, and Also, where the driveshaft comes into the back of the transmission, it may be wet there if you take a flashlight and look. Whether it's a pan gasket or a driveshaft, you should be able to get either one of those fixed for 150$ or less in my opinion. Let me know if you have any further questions. Thank you.
I follow you, then most likely that is either pan gasket or rear tailshaft seal. Thank you! Let me know if I can help any further.
Hello Lisa, did it wind up being the tailshaft or pan gasket?