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03-29-2016, 09:55 PM | #1 |
Registered User
Join Date: Mar 2016
Location: Hermitage, TN
Posts: 4
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p1518 code after 4896 to 0411 pcm swap
I have a 1999 GMC Sierra 1500 4wd with 4L60E. It stopped shifting so I pulled pan and changed filter, fluid, and all solenoids/wiring harness (all acdelco). It still would not shift so I did troubleshooting and found that the computer was bad. (It would not ground the Shift Solenoid B--code p0758. Both the 12V wire and the solenoid B wire checked out and I also could get it to click and it had about 21 ohms though the new solenoid.) I did a bunch of research to find out which computer would be compatible then went to a few junk yards. I only found one computer, a 0411 PCM from a 2001 Suburban. I installed it then did the relearn procedure, which went fine. The car started and ran great for a few seconds then barely ran at all. It pulled a p1518 code. It is in reduced engine power mode. I pulled the pcm pinouts for both vehicles and tried to see where differences would be and if it could be rectified. I found differences but no direct connection (each vehicle had pins for things the other vehicle did not have). I have read of others who swapped with no troubles, so I ask, do I likely have a bad 0411 PCM? If it is good, I'd like to just sell it on eBay for cheap as I have since gone on eBay to get the correct pcm for my truck with the vin flashed (4896 pcm.) But I'm curious how to fix a code when that code doesn't seem to exist on my 1999 vehicle, nor does the TAC that is referenced in the code. Ideas?
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03-29-2016, 10:02 PM | #2 |
Senior Member
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,217
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Re: p1518 code after 4896 to 0411 pcm swap
Always want the proper pcm you cant jsut swap them they need to be programed for each truck. Get the right ecm then go from there
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David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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