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Dave Nova
Dave Nova, Buick Technician
Category: Buick
Satisfied Customers: 1808
Experience:  ASE Master Certification. GM World Class Certification
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I have a 2003 buick rendezvous with a 3.4 that is

Customer Question

I have a 2003 buick rendezvous with a 3.4 that is overheating. There is no water in the oil and no exhaust leaking into the coolant that i can find. Ive replaced the water pump both radiator hoses thermostat radiator cap and had the system flushed. I got a code that said my temperature sensor voltage wasn't in range the other day so I'm thinking about replacing it tomorrow but have been told that once it goes bad it usually causes problems in the pcm. Is there anything you can recommend to maybe solve this problem?
Submitted: 1 year ago.
Category: Buick
Expert:  Dan replied 1 year ago.

Hello, my name is***** temp sensor was related vehicle would only overheat at idle/low speed due to cooling fans not working. If it overheats going down the highway then your head gasket is probably leaking, these engines are very common for them to fail. How did you check for exhaust in coolant?