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2003 Chevrolet Trailblazer not starting

Tiny
FMCOTA
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 110,000 MILES
Vehicle will not start, went to work one day and when I got out to go for lunch it would not start, changed fuel filter, crank position sensor, cam position sensor, still no start. Checked fuel pressuer and spark, they are ok. Checked throttle body and throttle valve not opening, is there any way of checking why it does not open. Electronic throttle control
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Wednesday, November 13th, 2013 AT 5:54 AM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What was the fuel pressure?

Have the computer scanned for any stored trouble codes and post the code numbers here.
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Wednesday, November 13th, 2013 AT 6:24 AM
Tiny
FMCOTA
  • MEMBER
  • 3 POSTS
I dont remember the fuel pressure at this moment but it was with what the repair manual specified and it stayed without dropping. The trouble codes are p1515 and p1516
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Wednesday, November 13th, 2013 AT 11:06 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You have issues with the "drive by wire" throttle system and you'll need to get that professionally diagnosed.
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Wednesday, November 13th, 2013 AT 12:16 PM
Tiny
FMCOTA
  • MEMBER
  • 3 POSTS
Thank you I will make an appointment to get it checked
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Wednesday, November 13th, 2013 AT 5:45 PM

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