2002 Chevrolet Suburban 1500 Questions

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the horn blows one or two times and then the fuse blows. keep changing the fuse every time it blows
Suburban was running a little rougher than normal so I cleaned the throttle body. Put it back on and now it is stumbling,idling very rough . Ran the codes got a p0300 p0332 p0135 p0134. I knew it needed a new cat. So my question is can the Cat be causing it to run like this ? Should I replace the catalytic converter first and 02 sensors or the knock sensor and intake gaskets? Never ran this bad til the throttle was cleaned. The scan tool said the codes along with the words, evap, misfire, 4 inc , mil on monitors , catalyst, 02 sensor, HTr 02 , fuel and comp . Never overheated, no visible holes or cracks in hoses. Thanks!
I've had this oil leak for too long, but i always add oil now weekly, it's a gasket on the bottom that i was told they have to lower the axle to fix. The starting problem i thought might be the ingention switch from the key but a mechanic told me its my starter on its last leg. Because if i hold the key sometimes it will start up, or if i keep trying it might start. It doesnt click or make any noise it does nothing when the key is in on but the lights and beeping will come on.
Today, i was coming home and i noticed i wasnt going fast as traffic i looked down and mu rpm was at the 3 and my speed was at 40. I turned off the radio and rolled down the window and it was whirling like i was racing. I havent noticed the trans hitting and never had an issue like this before. When not accelerating my rpm goes down to .5 to 1 like im in idle going down hill it still had problems when i accelerated. Please hekp
The whining sound increases with the speed of the vehicle and matches the speed of the vehicle not the engine speed

What seems to make the problem better or worse? Nothing
How long have you had this problem? a week
My 2002 suburban runs fine. all of the sudden im stopped at a light and the rpms drop low. I tried to press the gas pedal to rev the rpm's and keep it from stalling and no response to gas at all. I smelled gas. I could not move the truck. I turned it off for two light cycles and tried to restart it. Started fine and drove perfectly for a few miles. Waited at a long light and problem happened suddenly again. Thought it wouldn't start after i turned it off this time but after a few minutes it started and i made it home. Any ideas?
broke while in lock position. i dont have a door key for vehicle if i have a door key made by a locksmith will i be able to unlock door with key evan if actuator is still broken
Every morning when I warm it up, it sounds like she surges (in a pattern) once we get going she's fine. Already changed my plugs/wires, could it b my fuel pump?
If the rear audio controller is disconnected, would that make the rear speakers not work?
Happens when moving from about 5mph to 40 mph diff / driveshaft makes loud moaning noise
My 2002 5.3l flex ls 4x4 suburban some times stalls at low idle and upon start up if I turn on the heater it dies
Will I also need an alignment
Just did an oil change on my Suburban and noticed a white, milky substance on the inside of my oil fill cap. What is that? Engine has 201K miles.
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