Gauges not working?

CHEVY_MOM

MEMBER
2003 CHEVROLET S-10
4.3L
6 CYL
2WD
AUTOMATIC
200,000 MILES

After doing a quick thermostat change I lost the speedometer, fuel gauge, tachometer, and temperature gauge. Battery and oil gauges still work. The odometer numbers and PRND321 are not illuminated anymore. All that from just a thermostat change. Any ideas on what to try next? Also, no blown fuses. Any help appreciated.

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon,

There is no connection for this failure to the thermostat change.

The only thing I can think of is the ground wire. Was there a ground wire on one of the housing mounting bolts?

As far as the dash, you will need to verify power to the back of the cluster. Make sure the connector is clean and tight.

Roy

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Monday, December 10th, 2018 AT 10:15 AM

CHEVY_MOM

MEMBER
2 POSTS

I might add that I also had to remove the throttle unit and brackets to get to the back bolt for the thermostat. There are no ground wires, cluster connector is clean and tight. There certainly is power going to the panel because I have only lost certain gauges. I am totally baffled. I have done dozens of thermostat changes and never had this happen. Coincidence that something let go at the same time? Maybe but frustrating none the less.

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Monday, December 10th, 2018 AT 10:32 AM

ASEMASTER6371