I have a 2002 Chevy Tahoe I change the water pump now it overheats when it idles put the AC and heat still work not sure what's going on here any help
You said you changed the water pump,i can only assume you replaced the thermostat to,if not this may be the issue.
All so check the fan clutch,and if eqipped with electric radiator fans,make sure they are working properly.
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