How to change fuel filter on 2003 chevrolet silverado 1500HD

try disconnecting the battery for 5 minutes to reset the complete system. a few different things cause the reduced power to activate, oil pressure, coolant temp, traction control. I use my snap-on MT2500 to locate these types of problems

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check or change the etc switch by the thermostat outlet it tells the computer the temp and how to mix the fuel. It looks like a temp sw. but the temp sw is located In the head .

I have a 03 silverado and my truck did the same thing I had to change the distrubator cap and rotor button lets see every 6 months, They ran the air condition line over the distributor and the condensation from it rotts the inside of distributor

change fuel pressure regulator

misfires are often produced through faulty Fuel Injectors, I didn't see any mention of Fuel Injector Changes.

u will need to have it put on a diff type of scanner and pull the exact codes

It sounds like your fuel filter is clogged. This often happens after you run out of gas because your engine sucks up all the gas in the bottom of the tank where dirt and debris have been collecting for years. I recommend changing your fuel filter and if that doesn't fix your problem, add some fuel injector cleaner to your gas.

You can Purchase a Built in Block Warmer for your Truck.

the ac system has a low pressure switch when the unit is low on freon the compressor wont work . this is to keep the compressor from burning up. have your freon level checked.