John00

best practice is dont rely on doubt or lack of, use tests and checks to eliminate doubt. clogged tubes are not a function of miles driven. realize that many many warranty claims are for issues that were present on day 1 but werent noticed until later. claims such as for pinched tubes from factory.

Hrocks

John00, I typically overlook ignorant, condescending internet posts, but this one clearly made me scratch my head. If you read my post, it clearly stated the exact circumstances in which I noticed droplets entering the trailing end of my sunroof. My post offered a clear, concise and easy root cause fix for those, who (like I believe the OP) experienced the same, clearly definable issue. The forum members that have water draining into their interior in various locations might well benefit from your "best practice". As previously noted, I have had four GX 460s, currently have three. NONE of them, including my 23, have any "residual or standing" water in the drip rail surrounding the underside of the sunroofs, which might suggest a backup of drainage. By the way, I successfully tested the sunroof adjustment ,and no longer have any droplets penetrating the seal as I pass under either the very high pressure water jets, nor the high pressure dryer tubes used in the touchless car wash.

OklaGX

After taking the truck through a car wash there was some water on the passenger side floor board drove for a few minutes and them the trac, check engine, and 4LO light was flashing. Truck went into limp mode and wont go over 25 mph. Pulled all harness connectors that were wet and dried them off. Could this be an ecm issue or secondary air pump?

Update: Scanned for codes and it pulled, P0121, P0123, P0418, and P2121.
Most are for the throttle pedal position. Cleared the codes and the P0121 came back. Truck is running rough and CEL and 4Lo light still flashing.

Acrad

ECM Location'