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GMC Safari 2003 ECT Location

Tiny
ORLAND1
  • MEMBER
  • 2003 GMC
I own a GMC Safari 2003 V6 65,000 mi. Where is the ECT sensor located? Secondly, I can't find the radiator drain plug. Thank you.
Tuesday, August 21st, 2007 AT 4:04 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
P0401 Is usually either the egr, the port under it is clogged with carbon, Get a steel coathanger and ream it out, all the way thru to thre throttle plate. Then clear the code, if it resets, change the egr position sensor.
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Tuesday, August 21st, 2007 AT 5:18 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
For a start take it out and clean it and also the metering orifice see what happens. Also check the DPFE sensor
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Tuesday, August 21st, 2007 AT 5:18 PM
Tiny
BMASTERJERRY
  • MECHANIC
  • 47 POSTS
I'd say that It's not a clogged passage because you can't get both codes if it were. Most likely a bad DPFE sensor or a remote possibility a sticking EGR valve.
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Friday, August 24th, 2007 AT 8:19 PM

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