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Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

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  #1  
Old 08-01-2010, 05:22 PM
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Default Limp mode

Long story short, 95 2500 4wd,1386xx miles. Truck was stolen 11/08 & I just got it back 7/10. Was missing parts. Starter, pmd & cooler, ECM. I bought a 94 ECM off eBay, got the truck running but trans only has 2nd & reverse. So I bought another ECM for a 95 but I had to take the EPROM out of the 94 ECM because the 95 did not come with one. Still in limp mode. Checked for codes and get code 36. Is the EPROM causing this or is the trans having mechanical issues not related to the ECM? Any help would be appriciated as I get no replies at diesel place.
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  #2  
Old 08-03-2010, 12:45 PM
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eproms need to be coded to the type of pump you have. so if you got a random eprom its possible you got the wrong one.

Woody35's Sig:1997 Chevy K1500 4X4 EC/SB L56 6.5TD/4L80E
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  #3  
Old 08-03-2010, 04:44 PM
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So could the wrong EPROM be causing limp mode?

Mikethemasher's Sig:95 2500 ext. cab 4wd, stolen 11/08 retrieved 7/10. Not as pretty when it came home. FOR SALE
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Old 08-03-2010, 06:31 PM
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possibly but you have to test stuff first.
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  #5  
Old 08-03-2010, 06:41 PM
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Test the shift solenoids & speed sensors & such.. Wouldn't they be throwing codes?
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Old 08-03-2010, 09:12 PM
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figure out what code 36 is first.
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  #7  
Old 08-05-2010, 09:41 PM
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Turns out the EPROM is for a manual trans truck. In the process of finding out the correct code EPROM needed.
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