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UD RELAY ISSUE
I have a 2004 UD that has some kind of relay on top of the heater box going crazy and ready to light the truck on fire. It is a blue relay with three blue wires and one white wire going to it. Every once in a while on start up or driving this relay starts buzz... Login to read more. ![]()
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| Engine | 4.6 L |
Vehicle Data
2004 UD 1400 4.6L
| Engine | 4.6 L |

3 Replies Received
3 Replies Received