2003 Blazer Overheating

Asked by Jul 05, 2017 at 05:09 PM about the 2003 Chevrolet Blazer 4 Door LS 4WD

Question type: Maintenance & Repair

Blazer overheating recently replaced
radiator and thermostat code is saying O2
sensor not getting enough resistance.

3 Answers

215

Are you losing coolant even with the new radiator?

It doesn't seem to be losing coolant but is still overheating.

215

Try wiggling the fan back and forth, should be no play. If play, bad waterpump. Our gauges are not accurate. Use a scanner and report back what the real temperature is.

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