89 GMC Cummins conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Dieselwrencher** · 02-09-2014, 12:34 PM

Nice work on mounting your trans cooler! When I did the 89 burn I did, I put it right there too.

COS399 · 02-10-2014, 01:05 AM

Quote:

Originally Posted by Dieselwrencher

Nice work on mounting your trans cooler! When I did the 89 burn I did, I put it right there too.

Dieselwrencher, I mounted mine to the drop sway bar brackets with a 1/4" plate that had previously been bent for a different project. Of course the mount/box was a thinner sheet we bent into the box shape. Did you have any issues with it being between the frame rails behind the bumper? It isn't mounted to the radiator shroud so there shouldn't be an issue with the frame flexing.

COS399 · 02-10-2014, 01:28 AM

Good News! It's alive!! She wouldn't start at first due to two bad batteries that had a date of November of 2006 and air in the fuel lines. I need to buy two new batteries and then I will hook up to the PCS transmission controller and then see if it moves. Here are a few pictures

To get it running today we built the new battery cables, new intake heater cables from the battery to the relay and then from the relay to the heater itself.

I was filling the transmission and realized that there was a crack in the funnel down by the bottom and since there wasn't another one available we found a new use for heat shrink tubing. I still got more to do but getting it started up today was important.

**Dieselwrencher** · 02-12-2014, 04:32 PM

Quote:

Originally Posted by COS399

Dieselwrencher, I mounted mine to the drop sway bar brackets with a 1/4" plate that had previously been bent for a different project. Of course the mount/box was a thinner sheet we bent into the box shape. Did you have any issues with it being between the frame rails behind the bumper? It isn't mounted to the radiator shroud so there shouldn't be an issue with the frame flexing.

The only issue was the cooler didn't have a fan on it at first. The owner has since added a fan and there have been no issues with it. The owner also added a pretty big aluminum skid plate with holes drilled in it and I'm guessing that was the air flow issue.

COS399 · 02-13-2014, 02:14 AM

Thanks for the positive feedback. I'm going through a learning curve with the PCS transmission controller and I think that whoever tapped into the IP tapped into the wrong wire and therefore my TPS isn't reading properly on the computer. I should have it figured out by this time tomorrow.

CarbonCrew - I should be going to Conrad in the next couple of days and I will try and find MRC.

02-09-2014, 12:34 PM	#1
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,141	Re: 89 GMC Cummins conversion Nice work on mounting your trans cooler! When I did the 89 burn I did, I put it right there too. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

02-10-2014, 01:28 AM	#3
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 89 GMC Cummins conversion Good News! It's alive!! She wouldn't start at first due to two bad batteries that had a date of November of 2006 and air in the fuel lines. I need to buy two new batteries and then I will hook up to the PCS transmission controller and then see if it moves. Here are a few pictures To get it running today we built the new battery cables, new intake heater cables from the battery to the relay and then from the relay to the heater itself. I was filling the transmission and realized that there was a crack in the funnel down by the bottom and since there wasn't another one available we found a new use for heat shrink tubing. I still got more to do but getting it started up today was important. Attached Images

02-13-2014, 02:14 AM	#5
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 89 GMC Cummins conversion Thanks for the positive feedback. I'm going through a learning curve with the PCS transmission controller and I think that whoever tapped into the IP tapped into the wrong wire and therefore my TPS isn't reading properly on the computer. I should have it figured out by this time tomorrow. CarbonCrew - I should be going to Conrad in the next couple of days and I will try and find MRC.



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