Head gasket i need to find an online repair guide for my 98 buick park avenue ultra head gasket

Space does not permit me to provide all of the text and photographs needed to be helpfulo. However there is a removal and installation guide available that should provide all of the information you need. CLICK HERE

If the light is on the engine computer will have a trouble code or codes, which may help you towards solving the problem. Have the computer scanned for the codes. Go from there. Good luck.

Never have seen a bad head gasket on a 3800. Your problem could be the upper intake manifold had gone bad and leaked all of the coolant into the combustion chamber. If you run any engine too hot, you will need to replace the engine as excessive heat will warp cylinder bores, heads , valves etc. Seek a good used engine and never drive a overheated engine unless you can afford a replacement engine.

Right by the water pump would be the manifold not to hard compared to the price of a machanic`s Shop

You need a new turn signal flasher.

If you smell antifreeze in the vehicle it is most likely your heater core that is leaking.Look under the dash on the passenger side to see if there is any antifreeze on the botom of the heater box or under the carpet.

use bars leak head gasket repair. you may need 5 bottles. then change your oil and filter.

You shouldn't have to for head gaskets, makes it easier but not necessary.
For oil pan, you may have too. Depending on how much room there is between pan and crossmember and if pan is in tranny. Some cars the oil pan is 1/4" behind tranny but don't think that is the deal on your car.

You can go to auzone.com and register for free. and you will have an AWESOME Full Free Online Repair Manual with everything you could need plus much more!

Get a replacement ac control head.

Most likely a blend door issue inside the dash or a problem with the HVAC Control head.Hope this helps!!