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PO128 code

Tiny
BILL BENNETT
  • MEMBER
  • 2007 GMC SIERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 54,000 MILES
My 07 gmc pickup has a po128 code comeup. What is the problem?
Monday, August 15th, 2011 AT 8:47 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0128 Coolant Temperature below threshold

Check and test the thermostat and coolant temperature sensor-
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Monday, August 15th, 2011 AT 9:02 PM
Tiny
BILL BENNETT
  • MEMBER
  • 2 POSTS
Thank you I will do that
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Monday, August 15th, 2011 AT 9:05 PM

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