GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Chevy Suburban 4WD - RHD 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Engine Coolant Temperature Gage Inaccurate or Inoperative

Engine Coolant Temperature Gage Inaccurate or Inoperative Gasoline

Step

Action

Value(s)

Yes

No

1
  1. With the ignition OFF and the engine cold, disconnect the connector at the coolant temperature sender.
  2. Connect one red lead from the J 33431-C to the coolant temperature sender connector cavity A.
  3. Connect the other lead to ground.
  4. Turn the ignition switch to RUN.
  5. Adjust the resistance dial to 1305 ohms, and then to 49.5 ohms.

Does the temperature gauge indicate that the engine is cold (at or below 100°F) and then hot (approximately 260°F)?

--

Go to Step 2

Go to Step 3

2

Replace the coolant temperature gauge sender.

Is the repair complete?

--

System OK

--

3

Replace the instrument cluster.

Is the repair complete?

--

System OK

--

Engine Coolant Temperature Gage Inaccurate or Inoperative Diesel

Step

Action

Value(s)

Yes

No

1
  1. With the ignition OFF and the engine cold, disconnect the connector at the coolant temperature sender.
  2. Connect one red lead from the J 33431-C to the coolant temperature sender connector cavity A.
  3. Connect the other lead to ground.
  4. Turn the ignition switch to RUN.
  5. Adjust the resistance dial to 1305 ohms, and then to 49.5 ohms.

Does the temperature gauge indicate that the engine is cold (at or below 160°F) and then hot (approximately 260°F)?

--

Go to Step 2

Go to Step 3

2

Replace the coolant temperature gauge sender.

Is the repair complete?

--

System OK

--

3

Replace the instrument cluster.

Is the repair complete?

--

System OK

--