View Full Version : relocating the pmd
09-12-2011, 08:44 AM
I just bought a 1994 3500 6.5TD. I've read a ton on here about relocating the pmd. If the truck already has 99,000 miles on it with no issues, does this still need to be done? And also, here's a rookie question. What is the PMD? :dunno:
1988 GMC 355
09-12-2011, 12:02 PM
yes it does, save you alot of money in the long run.
09-13-2011, 02:42 PM
Yes, it does.
PMD = Pump Mounted Driver. Basically, it gets too hot and dies. It's just a solenoid.
Here's a website that sells a relocation kit and has a decent explanation of what it does, why it fails and why relocating it usually fixes it. http://www.hdiesel.com/product.asp?id=42
09-13-2011, 08:28 PM
Thanks, that pretty well explains it.
The best place to put it is in front of the left side battery, just behind the headlight. The relocation kit should come with a heat sink. Use that to mount it up there. One thing to realize is that not only is the PMD damaged by engine heat, but it creates a tremendous amount of heat itself. It needs to be cooled almost more from that heat than engine heat.
09-14-2011, 12:51 PM
good info, thanks.
GM Guy 1
09-23-2011, 01:20 AM
actually, may people feel bumper mounting it is the best spot.
10-03-2011, 01:31 PM
Does anyone have any pics of were they actually mounted their PMD? I just picked up a 97 K2500 with a 6.5 and it has the PMD relocate kit from ssdiesel with the big heat sink mounted on the side of the intake. Is that a good spot? It seems to me like thats still a pretty hot area. I'm think about just moving it to right in front of the a/c condenser and mounting it right next to the front horn just behind the grill. Seems like it would get the most air flow there.
10-06-2011, 12:00 PM
i mounted mine to a big heatsink my dad found at work, right behind the pass. side hole in the bumper. ill get pics this afternoon.
under the hood is not a good place for it. it needs to be somewhere where it can get air flow!
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