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Engine code po321

T

the misses

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we have a 1996 chev 6.5 k2500 diesel 4x4

I am getting engine code po321 so I am looking to locate the fuel pump relay. My manual does not give me the exact location for this relay. Does anyone know where I would locate it so I can test it?
thanks
 
Last edited by a moderator:
I believe it's in the fuse center under the hood. Might want to start your own thread so it gets more attention.
 
our check engine light came on. the code was po321 so we replaced the relay with a brand new one and cleared the codes. we are still getting the check engine light and the same code so the new relay did not solve the problem. I did find this link
http://www.thetruckstop.us/forum/showthread.php?t=13236&highlight=po231 on this site and I think they they are talking about the same thing. (they may have transposed the code) we have about 143,000 miles on this 96 chev suburban diesel 4x4.
This site is a great resource. I love all the information here.
 
He cleared the engine code again. It's been a while now and this time it has stayed off. Everything seems to be working fine. He said he hasn't had to do anything else other than replace that relay.
 
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