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Message: [QUOTE="TARM, post: 291375, member: 578"] Thanks Dave. Not sure why I didn't think of that. Well it looks like the X is going on the trip. Along with in tow a tool kit and 2 UVCH a Trans Range Sensor and 8 glow plugs LOL. Just in case of course. My BTS will be shipping out this coming week so I will have a present when I get home from the trip. I would luv to know what else the GPCM does exactly. There must be something more than just controlling the glow plugs like the relay does. I have found a number of threads on the net where guys have had rough running engines even after warm up and messing with the GP system got things smoothed out. That should not be possible if all it did was turn the glow plugs on and off. I tend to wonder if it has some diagnostics features that then cause the PCM to make changes some how. I will likely pull the driver side VC and check number 6 glow plug and replace that banks set. I am going to check resistance from the GPCM harness connector first and see if anything shows. [/QUOTE]

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