Common issues 07 Grand Prix GXP v8 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-22-2015, 11:46 AM   #1
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Default Common issues 07 Grand Prix GXP v8

2007 Pontiac Grand Prix GXP. I wish to learn about the car and understand its strong and weak points . It'* had the transmission rebuilt at 74,000 and my first thoughts are what made it fail.. I will need to understand the common issues this car may have....and avoid them. Is there a listing of troubles and stickys with info about certain topics ? Thanks
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Old 05-22-2015, 02:11 PM   #2
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It has the Northstar right?
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Old 05-22-2015, 03:12 PM   #3
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It is not a North Star... I can't seem to find what engine it is beside a 5.3 v8 with active fuel management
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Old 05-22-2015, 03:12 PM   #4
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303 HP
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Old 05-22-2015, 03:14 PM   #5
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The front tires are an inch wider than the rear ones though...
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Old 05-22-2015, 03:23 PM   #6
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Same 303 HP 5.3 v8 engine as the 07 Chevy Impala SS has.. active fuel management ..
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Old 05-22-2015, 03:27 PM   #7
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5.3 L LS4 V8 - 303 in this 07 I am asking about
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Old 05-22-2015, 05:03 PM   #8
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You have already run in to the one problem that I am aware of with that car. The 300+ HP v8 running power through a 4t65. They are notorious for short transmission life spans from what I understand, and also with it comes other inhearant behaviors with a torquey v8 firing power at the front wheels.
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Old 05-22-2015, 06:59 PM   #9
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I think it is a 4t65-E or who knows what the model tranny it does have ?
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Old 05-22-2015, 10:19 PM   #10
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Quote:
Originally Posted by 1013jesse View Post
I think it is a 4t65-E or who knows what the model tranny it does have ?
Yes, it'* an 'E' which denotes electronically controlled.

Got lazy, sorry
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