Cheap easy way to determine if the belt is on the way out.
Take one of the extremely cheap hotel bars of unused soap straight out of the package. With the truck running, and being extremely careful, take the dry bar of soap and let it rub on the belt. Do both sides of the belt.
Drive and check. If the chirp goes away, replace the belt as it is glazed and the noise will come back.
If chirp is still present, keep looking.
Silver Birch Metallic 2004.5 GMC K2500HD with 265/75's
Banks super scoop, tubing, intercooler, and cat back with the IQ on the Window (for now). BD driver side Exhaust manifold.
Airdog 150 on frame rail. Amsoil synthetics for lubrication, and dual Amsoil filters on the driver frame rail. PPE centrifuge install.
EGR blocked. PCV rerouted. Resonator blocked (reinstalled for looks). Bladerunner installed. Dead kitty by MBRP (front pipe) and down tube replaced with the MBRP (heat wrapped from the turbo down to the front pipe).
Mike L transmission. Original had 152,000 on it and was still running OK but had been limped several times
Performax Gauges by ISSPRO in pod over mirror and overhead console (console pod by PPE).
----Looking to do an onboard air with a set of truck air horns. Want Nathan K5LA's but not in the budget at the moment.----
Added to my Dmax Fleet is 06 LBZ. Banks intake and exhaust, PROFAB downpipe and MBRP dead kitty replacement pipe. More to come.....