2003 Blazer Overheating
Blazer overheating recently replaced
radiator and thermostat code is saying O2
sensor not getting enough resistance.
Are you losing coolant even with the new radiator?
It doesn't seem to be losing coolant but is still overheating.
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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