TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

engine ruff with AC on

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Old January 14th, 2015, 10:08 PM
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Default engine ruff with AC on

2002 Trailblazer with 207,500 miles. Just replaced the #5 coil, all plugs, fuel pressure regulator and the resonator. Runs great, right up til I turn on the AC. then is starts acting like it will stall, but doesn't. Any ideas?
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