LS computer gurus. no power at fuel pump

[67C10BUB]

Originally Posted by chevydog66

Figured it out. It was a loose Pink wire. After checking lots of fuses and connections with the test light, I was wiggeling everything to find a loose connection, and finally found it. I drove my truck down to John at Speartech, and we figured out that the Bosch o2 sensors were not compatible with the computer. They were coming on and heating but not trimming and fluctuating like they should. John is a great guy and very knowledgeable, he spent at least an hour and a 1/2 figuring out the problem. He said that the o2 sensors actually have something to do with the transmission parameters and since I am running a 4L65 and not the 4L80 that the computer was originally set up for, he had to change some things. He had some used original GM o2's laying around so we put them in and it works great, no codes. I drove it home over an hour on I-69 doing 80mph, after stopping at the local White Castle in Anderson, In. for lunch and a 30 pack of White Castles. Thanks John!!

Good to hear about Speartech. I just ordered a harness from him, so it's nice to know that he stands behind his work.