08 Suburban CKP issue!!!!

king_strut · December 16, 2020

Hey Guys, I have a 2008 Chevy Suburban 1500 LT 5.3L Flex 4WD. The issue I am having is no tach, service stabilitrak, service traction control, rough idle, hard shifting, and excessive fuel consumption. I got P0335 ckp circuit A DTC and so I changed out the CKP. I attempted a relearn but I an getting no Engine RPM's on the Snap-on Solus Ultra. I get CKP rpms and CMP rpms but no engine rpms. it also doesnt show active ckp count but it shows active cmp count. I have checked the condition of the wires at the connection to the ckp but noticed nothing out of the ordinary. I have good signal on MAP, MAF, TPS, and Throttle response sensors. I get no misfire codes and it seems to run ok when I throttle it up in park. I really need to know what wires at the ecm are for the ckp so that I can run a jumper for each of the 3 to see if it is a break in the wire somewhere in the harness. Thanks for any help you can give me!