Limp Mode After A Long Idle
JUST AN FYI POST. Twice in my 05's 125K history it has gone into limp mode, and both times it was after a long idle period at normal engine temperature. The cause is high UNDER HOOD temperatures. The first time was when I pulled off the highway to take a cell phone call and wound up talking for 30 minutes. When I pulled back out into traffic.....Limp Mode. The second time was at the boat ramp letting the AC cool the truck off and I got to swapping lies with the guys at the boat ramp for about 30 minutes. I got in it and ....limp mode.
The interesting part is that it does not show a CEL or throw any codes. If it happens to you, do not panic, it will go away if you turn the truck off and let it sit for a while. Opening the hood helps.
2005 Chevy 2500HD, CC, SB, 4X4, Duramax, ARE Topper, 60 gallon RDS toolbox/tank combo, Kennedy Headlight Booster, Isspro pyrometer and boost gauges, EGR Blocker, PCV Kit, Bilsteins, 265 Michelin MS-2, TTS Exhaust, pulling 35' Jayco travel trailer.