Engine Coolant Temperature Gage Inaccurate or Inoperative. Buick Riviera 1999

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1999 🢒 Riviera 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Engine Coolant Temperature Gage Inaccurate or Inoperative

Step	Action	Value(s)	Yes	No
1	Did you perform the Instrument Cluster Diagnostic System Check?	--	Go to Step 2	Go to Diagnostic System Check - Instrument Cluster
2	Turn on the ignition switch. Connect a scan tool. Select PCM OUTPUT MENU. Is the temperature reading on the scan tool the same as the temperature indicted by the temperature gauge?	--	Go to Engine Controls	Go to Step 3
3	Replace the instrument panel cluster. Refer to Instrument Cluster Replacement . Did you complete the repair?	--	Go to Diagnostic System Check - Instrument Cluster	--

Step

Action

Value(s)

Yes

Did you perform the Instrument Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

Turn on the ignition switch.
Connect a scan tool.
Select PCM OUTPUT MENU.

Is the temperature reading on the scan tool the same as the temperature indicted by the temperature gauge?

Go to Engine Controls

Go to Step 3

Replace the instrument panel cluster. Refer to Instrument Cluster Replacement .

Did you complete the repair?

Go to Diagnostic System Check - Instrument Cluster