Got 2 Codes

[budtoh3zo]

I was leaving a friends and the temp gages starts going up feel the heater its not getting hotter so feel more releved and the gage keeps going up Fan is not kicking in so i kick it in N and shut it down and restarted it and it goes back to Normal and i reach back and get my Bully dog and pull the codes and get U0217 and U0438

 

[tbirdfiend281]

i can check at work tomrow, but i know those codes are module communication error codes, witch could be related to your bully dog...

 

[JohnBoyToo]

maybe try www.obdii.com to see if it's there ?