LQ9 swap...gauges dont work

[kewljay223]

not sure how much i can help as i dont have the newer style gauges but what exactly do you mean they dont work? as in absolutely nothing is working or they just arent reading or not reading correctly?

im pretty sure you have a little lcd area for messages correct? does this light up? does anyting light up? do the gauges/lights do any kind of movement when you turn the key?

if nothing is happening at all i would assume you have no power to them. i would start with fuses and see if any are blown. if so then you may have connected a wire wrong somewhere. if fuses are good but still no power then maybe you forgot a wire to power them.

if you get lights and/or movement but the gauges just dont show readings then i would assume you have a problem with the cluster not communicating with the pcm/vcm/bcm so i would check those wires. i got you some diagrams from your truck that may help a bit.




looks like thae data lines i would start with to trace are the gray going to A5 lt grn going to C1 or the dk grn going to C4 since you said you had the 4.3.... hope this helps a bit. i can get you some other diagrams if you need.