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2001 GMC C2500 no codes

Tiny
ECCCA
  • MEMBER
  • 2001 GMC C2500
  • V8
  • 4WD
  • AUTOMATIC
  • 96,000 MILES
I went to my local auto parts store to have them read the computer and it shows nothing at all. We checked all the fuses and all were fine. We went to his car to check if the scanner was bad and it read his with no problems. It will not read anything. Any sugestions.
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Saturday, August 7th, 2010 AT 8:48 AM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
The diagnostic connector is a fused circuit, so if scanner will not connect, fuse is bad.
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Saturday, August 7th, 2010 AT 8:54 AM
Tiny
ECCCA
  • MEMBER
  • 2 POSTS
I did check all fuses and they are good. Could the computer gone bad.
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Saturday, August 7th, 2010 AT 10:48 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Yes it is possible the PCM is bad, dealer or well equipped garage can test PCM.
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Sunday, August 8th, 2010 AT 8:34 AM

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