Having problems with your 1997 GMC Sierra ?

I was heading up north and pulling a 14' travel trailer and the ****** over heated and spewed fluid out a release valve. i had it towed and the shop filled it up and put in some special oil and its shifting fine and made it home (over 250km) with no over heat........... what could have happened and what needs to be done now? rebuild is possible obvious, but what could be damaged ??????

Posted / edited by AnonymousUser on : 17-01-2022

Answers :

You do mean the transmission? Read your posted question as shown in the link below
As for the cause. There could be several causes.

Cooling system - with the cooling system, this could be caused by leaks in the system such as the radiator cap, linkages in the radiator hoses, bad water pump, leaking radiator. This is if you get to put in coolant more than the usual.

Head Gasket - If you notice bubbles in the coolant inside the radiator if you open the cap, or white smoke you may be burning coolant due to a bad head gasket.

As for the damages,

The seals, o rings or gaskets can be easily be damaged. If they are damaged you may encounter leaks in fluids. External parts such as vacuum lines, wiring and electrical components such as the distributor coils and ignition coils may be affected by the heat. Other items that can be damaged are the piston rings and in turn the piston and valves themselves if left unattended and may cause you to loose compression.
Repair Help & Product Troubleshooting for 1997 GMC Sierra

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