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1997 GMC Yukon 97 Yukon wont start " Baffled "

Tiny
ASSTCHIEF72653
  • MEMBER
  • 1997 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 188,000 MILES
Driving home last night the yukon just died, pulled off the hwy. To check things out, not getting any spark, left it there till today. Start at the beginning, I bought this truck 7 months ago and done a complete tune-up (cap-rotor-Plugs- wires-fuel&air filters) just so I knew exactly where I was at on maintaince, and NO problems till now.
So far today I have replaced in this order 1) Coil and no start - 2) Crank Pos. Senor and no start - 3)Cam -Pos. Sensor and no start - 4) Control Module and no start - 5) checked timing by bringing up # 1 on compresson stroke and looking at the rotor and I was dead on. Cap and rotor look to be in great shape. I also sprayed starting fluid down the intake and no start. Im Baffled!
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Tuesday, August 24th, 2010 AT 6:13 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi asstchief72653,

Thank you for the donation.

Check for battery voltage at ECM-1 and ENG-1 fuses in underhood fuse panel. If power are not available at both fuses, check the Pink color wire coming out of ignition switch when turned on.

If power is not available, th ignition switch is bad.
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Wednesday, August 25th, 2010 AT 12:41 PM

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