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1995 Chevy Cheyenne ELECTRICAL

Tiny
KURTPOLLACK
  • MEMBER
  • 1995 CHEVROLET CHEYENNE
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
I have a problem with the electrical system. Alt was replaced but before this problem the blower motor, signals, volt meter, speedo and trans not shifting into final drive gears, checked fuses but not sure if it is a ground, fused like or a bad pcm tcm
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Tuesday, February 3rd, 2009 AT 12:14 PM

8 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
M unclear of the problem. Blower inop? Or just a transmission problem? Is the check engine light on?
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Tuesday, February 3rd, 2009 AT 12:28 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, the problem is ignition feed? Seems like every circuit you mentioned is ignition feed, goes hot when you turn on the key.

Pick one circuit and troubleshoot, it may fix everything.

To start, you might check maxi fuse 6 and 5 in the power distribution center under the hood, one shows to be 40 amp and the other 50 amp, not only check the fuses, the circuit should be hot on those fuses.
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Tuesday, February 3rd, 2009 AT 12:51 PM
Tiny
KURTPOLLACK
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  • 4 POSTS
Ok found bad gound to the rear sig lights, but still no speedo and volt gauge, and being that the speedo is not working it is probably affecting the trans. By the way thanks for your help kurt
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Tuesday, February 3rd, 2009 AT 3:33 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
The speedo nd volt gauges are not related. The speedo problem may very well be the vehicle speed sensor located on the transfer case(very common) and what exactly is the volt gauge doing?
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Wednesday, February 4th, 2009 AT 5:41 AM
Tiny
KURTPOLLACK
  • MEMBER
  • 4 POSTS
THE VLT GUAGE IS PIN TO THE BOTTOM BELOW 9V.Y VLT IS 12.7 ALT IS NEW. KURT
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Wednesday, February 4th, 2009 AT 8:51 AM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Check voltage at battery and if its 14volts or close then the gauge is no good
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Wednesday, February 4th, 2009 AT 1:33 PM
Tiny
KURTPOLLACK
  • MEMBER
  • 4 POSTS
If there's not, wiring diagram shows what looks like a fused link between guage and alt after pcm. Guage is feed from pcm to the cluster, so the whole cluster would have to be replaced if there's no link. Thanks
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Wednesday, February 4th, 2009 AT 3:34 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Thatis correc t
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Thursday, February 5th, 2009 AT 6:55 AM

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