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That's for the reply. I did check the battery, it was fully charged. I started to check all the fuses related to the trunk and the retractable top. I decided to take it to the dealer and have them check it. OUCH. $ 300.00 later they found a broken wire going to the top in the wiring harness...

When I press the trunk button sometimes it will not open. It seems like it trying to open but doesn't open?

Thanks to all of you. My mechanic kinda thought is was the sending units in the tanks. I use nothing but Shell V-Power in all my cars. I have used the chevron before, maybe I will use it more often before going for the big ticket of replacing the sending units. Just don't understand when I clear...

When I have it reset it goes back to reading normal. After maybe 1 or 2 months it starts to mess up again. This has been going on for 3 years or so. 2 times when it was reset it worked for about 6 months. It's driving me crazy. Thought it might be the main computer. If there is such a thing?😒

My gas gage reads between 1/2 and3/4. But

Main one

Does anyone know where the computer is located on my 2005 xlr?

Trunk release button. Thank You i never thought of that i will check that for sure.:)

My trunk opens when i activate any electrical device. So far it doesn't open when i am driving. Has anyone had this happen?:dunno:

I use Techron it's from Chevron, you can find it in any auto motive store and I also started using Shell gas v-power. Don't think you can change the gas mileage much. That's a big automobile, not known to get the greatest gas mileage.

I use Techron it's from Chevron, you can find it in any auto motive store and I also started using Shell gas v-power. Don't think you can change the gas mileage much. That's a big automobile, not known to get the greatest gas mileage.

Just some good information. About 1 year ago my fuel gauge decided to stop working properly. When I filled the tank up it would only register half way between 1/2 and 3/4 of a tank. After being told to use a few bottles of tech-tron which is made by Chevron, I tried this for about 8 months. Did...

Thank you, I am feeling better about this after all the feedback on head gaskets.:wave:

Yes my gas gauge is doing that. When I fill it the needle only goes to 2/3. After about 250 miles it starts to move down. When it reaches 1/4 of a tank I fill it again. I have used Chevrons Tech tron cleaner for about 7 tank fulls. Still does the same. I think I will use the Sea Foam or the...

I need to replace my sending units. Is there any easy way to do this. I was told that you need to drop the rear end down, transmission and then the gas tanks will drop along with the cross over tube. Just though there should be an easier way. Cost around $2000.00.

Thank for responding. I do know what you mean by expensive. Found out from my mechanic that it would cost around $5k for a head gasket, he said that you need to drop the engine down to do it. He used to work for a Cadillac dealer on North Star engines all the time. Now has his own business.

Does anyone know if Cadillac ever solved the problem of blowing head gaskets on the North Star engines.:)

I just checked with my dealer, they suggest you check and see about having yours rebuilt. Check out this website. Maybe a salvaged one. Hope this helps Salvage 2004 Cadillac Xlr For Sale | Id 22559154

Brake Module Check on ebay I saw one but not sure if it is correct.

Thanks for the feed back on the head gasket replacement. I just found out some good news from my mechanic. The leak is the water pump and not the head gaskets. Relieved to hear that, he will also replace the camshaft actuator seals that are weeping just enough to drip on my garage floor. Total...