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Clean the throttle body of carbon build up. Sent from my XT1254 using Tapatalk

My base 2005 does the same and after much research I found that this is totally normal for a Northstar. It is a function of the software that drives the cooling fan. Cadillac wanted to keep the car quiet so they run the fan at very low speeds until the engine temp gets very high at which point...

I recently locked my fob/key in the trunk. I used a small wedge like a door stop to pull the driver's window away from the folding window, not too much pressure to break the window but enough to create a 1/4" gap. Inserted a long, hooked, metal rod and pulled up on the door emergency release...

Ah - the survey only shows when viewing with a browser, i.e. it does not show up when using Tapatalk.

54, 2005 XLR base. Sent from my XT1254 using Tapatalk

I have had the cruise control on a different GM vehicle (06 Impala SS) disengage intermittently due to the axle shaft wearing through the speed sensor wires on the integral hub/bearing/speed sensor assembly. Carefully inspect the wires coming from the speed sensors in your rear wheel bearings...

I second the Techron and suggest you use Shell Premium fuel. It is supposed to have the highest amount of detergents in the industry. My 2005 had the dreaded fuel sender issue that CC mentioned and the combination of Techron and Shell Premium actually reversed the problem without having to...

You cannot clear a code just prior to emissions testing, there are readiness tests that need to be performed. Resetting codes will also reset readiness tests and you will fail.

I've experienced the same with my 2005 XLR, it runs hot (220) when in traffic and immediately cools off as soon as you begin moving again. I ran it in my garage this summer with it lifted in the air so I could watch the fan come on and turn off while monitoring the temperature with a scan tool...