Radio keeps shutting off

It sounds like you have a constant 12V power supply wired to the radio instead of a switched 12V. If you've recently installed a new radio, check your wires again. There should be a 12V constant and a 12V switched. The switched 12V will turn the radio off, while the constant 12V is for keeping the clock and radio memory working.

The red lead (switched) turns the radio on when the ignition switch is turned on and off when the ignition switch is turned off. The orange wire is used to keep power constantly going to the radio so you don't lose the last channel you were on, and it gives you emergency weather information even if the radio is off. If you want the radio to stay on all the time even if the ignition switch is turned off then you can just put both wires to a constant power source like directly to the positive post of the battery or an un-switched connection on the fuse panel, and you just turn it off with the volume/power switch. But you have to remember to turn the radio off or you could drain the battery in a few days. So the choice is yours. :)

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

Check your wiring. Sounds like you've got a bad ground, or missed a 12v source somewhere. Remember - There is a 12v constant that keeps your radio constantly tied in (so your clock stays correct, etc) and a 12v Ignition/ACC which tells your radio when you've turned the car ON or in ACC mode (which turns the radio on).
If you've mixed the two up, you'd probably get the results you're getting.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

The radio should still shut off after 20 minutes even if the door is not opened. If it stays on longer than this there is still a problem..

soft reset. get in turn on truck with door shut turn on sat radio on ch 184. turn off radio turn off truck and take keys out. next open door fully for 90 seconds. shut door. turn on truck. turn on radio and have sirius reset it. its called a soft reset.

The default mode for this radio is in "sleep-timer." You can adjust the time it stays on or you can hold the On/Off button down for a few seconds as you turn it on. (You'll notice the "bed" icon no longer appears.)

unfortunately, the time display cannot stay on for loger time and constantly. it only works for a few seconds..