Question about 2003 GMC Yukon Denali

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When should you change the timing belt and water pump on a 2003 Yukon Denali with 117,674 miles on it?

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Every 100,000 miles

Posted on Jul 01, 2009

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The water pump is in front of your motor. If the coolant is leaking from under the water pump, then the gaskets on your pump need to be replaced. Depending on how many miles you have on your vehicle, you're better off replacing the whole pump, plus the belts and thermostat. Yes, new gaskets come with the pump.

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When is the recommended change for a timing belt change?


Ok, first, GM uses a timing chain in its engines, which goes much longer than a belt. With the timing chain, you don't have to worry about changing it until you're having to worry about overhauling the engine. Some people will try to sell you additional shop work, but it's not necessary. These are known to go for more than 400,000 miles with no problems if the engine lasts that long, but are always changed when the engine is rebuilt or overhauled. I currently own a silverado with 120,000 miles on the original timing chain, an s-10 with 210,000 miles on the original timing chain, and a suburban with 135,000 miles on the original timing chain, just for a reference for you. Hope this helped you out.

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Water pump for 2002 Yukon Denali


Your water pump can last an indefinate amount of time as there are no rules on how long this may or may not last.At this juncture I would check for any play or lose feeling(or roughness) in the shaft with the belt off and inspect for any signs of weeping through the bottom "weep hole".If it feels tight and no excessive coolant trail appears from the bottom hole,I would personally "keep on truckin" as a failing pump will exhibit these an other signs of failure before it becomes a major issue....

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2002 gmc yukon denali ac pump


it has gone bad replace it

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