Instrument cluster

Tiny
PHLUDGE
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
Just recently I had the oil changed. Since then my Tachometer does not work and looks like the engine is revving up to 10k rpm. The oil gauge at times goes way above the max indication and the fuel gauge looks like the tank is way overfilled. Sometimes the oil gauge will work and the fuel gauge won't. Sometimes the fuel gauge will work and the oil gauge will not. Sometimes they all work, sometimes they all don't work. Any suggestions as to why this is happening?
Saturday, March 28th, 2015 AT 7:04 AM

11 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be coincidence but sounds like a bad dash try cleaning battery terminal ends and seeif any oil or fluids on belt
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Saturday, March 28th, 2015 AT 8:12 AM
Tiny
MACASTILLO
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
Instrament panel gages some not working
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
GMTECH
  • MECHANIC
  • 537 POSTS
If some of the gauges are not working, you will most likely need a new instrument panel cluster. Check with the dealer. There was a unofficial recall on pickups for this problem. Yours might be covered as well
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
MPVINCLER
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET TRAILBLAZER
  • 4WD
  • AUTOMATIC
How to remove chevy trail blazer instrument cluster
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Remove the left closeout insulator panel. Remove the knee bolster trim panel. Remove the instrument panel cluster bezel. Remove the screws retaining the ipc to i/p. Partially remove the ipc from the i/p in order to gain access to the electrical connector. Disconnect the electrical connector from the ipc. Remove the ipc from the i/p.
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
DONIGLAY
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET TRAILBLAZER
Electrical problem
2004 Chevy Trailblazer 6 cyl Four Wheel Drive Automatic 4oooo miles

dashboard gauges don't work battery and brake indicaters stay lit new batt. Installed
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
First, make sure the battery cable ends are completly clean and free of any corrosion. Make sure they have a good connection at the battery. Check the fuse box under the driver side rear seat. Make sure there is no water or corrosion in the fuse box. If all is ok, you probably have a bad instrument cluster. You will need a Tech 2 scanner to see if you have communication with the cluster.
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
RG360
  • MEMBER
  • 3 POSTS
  • 2004 CHEVROLET TRAILBLAZER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 79,000 MILES
My instrument panel will not turn on. I was driving on Sunday and my panel and gauges turned off. After driving a while, it turned back on(about 9 mi.). It drove fine the rest of the day. The other interior items are working, and the truck turns on without hesitation. All lights, radio, blinkers, wipers are working fine, except for all my instrument panel gauges. I checked the fuse for my panel and it is fine. What else can be the problem? I noticed today in the morning that my panel was off again. What could be the problem? Please help!
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Most likely its a problem inside the instrument cluster and will need replacement. Its not uncommon for this to happen just unfortunate. The dealer sells clusters on a exchange basis. Hope this helps
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
I can get you exact wiring diagrams if you want to be 100 percent positive. Let me know
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)
Tiny
RG360
  • MEMBER
  • 3 POSTS
Thank you for getting back with me and giving me advice. If not too much of a problem, yes, please send me the wiring diagram. All of your help is greatly appreciated.
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Wednesday, May 20th, 2020 AT 1:07 PM (Merged)

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