GMC Acceleration Loss

Tiny
GMCGUY
  • MEMBER
  • 2004 GMC YUKON
  • V8
  • 4WD
  • 50,000 MILES
Have a 2004 GMC Yukon. When accelerating from a stop, sometimes there is a pause (no power) of about 1-2 sec. When it should be going 1st to 2nd gear. Dealer said the transmission is fine, but not sure what is causing this power interruption at low gear. Doesn't occur at any other time.
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Monday, December 20th, 2010 AT 12:04 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on? Has the fuel pressure been checked?
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Wednesday, December 22nd, 2010 AT 3:45 PM
Tiny
GMCGUY
  • MEMBER
Engine light does NOT come on. Fuel pressure is OK. Did have the transmission fluid changed, without any improvement.
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Wednesday, December 22nd, 2010 AT 6:57 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If that is the case, start by checking for vacuum leaks.
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Thursday, December 23rd, 2010 AT 12:36 PM
Tiny
04DENALIGUY
  • MEMBER
Hey GM guy did you ever figure out your acceleration problem on your 04 gmc Yukon, I too am having the same problem with mine?
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Saturday, February 21st, 2015 AT 5:35 PM

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