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2003 Chevrolet Silverado 2500 HD Questions

Get answers to questions about your 2003 Chevrolet Silverado 2500 HD at RepairPal. Find solutions, diagnose problems and get back on the road.

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114
questions

Check fuse they look good . Is it a ground problem? What else could I check

my engine light will come on sometimes and then it will not

My truck made a loud noise underneath it.It sounded like something came lose or busted I thought it was the transmission so we bought a Yukon transmission and transfercase wire harness.It was hooked up and will not move when put in gear.

I tried moving steering wheel and tried the shifter and it still will not move. I had my truck go in the ditch last night wondering if maybe this would have caused it? Thinking maybe problem with the transmission not in park.

The compressor comes on sometimes and then sometimes it don't the charge is good thenough freon level is good so what could it be

No alarms sounding when ignition turned on and when door is open with keys still in ignition.

#1 Club seat door locked and will not unlock. #2,Also glove box locked and will not openon 2003 2500 silverado
#3 heat/ac fan woeks only sometimes and only on high, and hard to get it stopped even aftwr truck is cut off, keeps running

2003 Chevy Silverado 250 L7 due diesel . We drained 5 gallons of both fuel and oil from crankcase
How do I diagnosis the cause, what's the repair and cost

after I bleed it off it may go 2 or 3 days before it does it again could my abs be doing it?I have replaced the rubber hose and brake pads turned rotors and replaced the clap.

First of all, GREAT site Thank You.
Truck was stored for 4 years, ran fine previously with 56000 mi, started 3-4 times in yr. Fuel pump went bad and bad gas in tank. All fixed, after awhile p0300 , the only code,came on with a noticeable miss, worse cold. Runs good at speed and accel. Cyl # 4 fouls quickly. miss worse on even side, #1 with only a few. 3-5-7 quite a few. Cleaned MAP & throttle body.Compression 140psi. Checked wires, coils run @ 35-40kv, even though at 2500 rpm they all went down to about 10kv. It was an old scope and had to ck each cylinder individually. swapped coil #4 & #1 no change, exhaust pressure before cat on even side .65psi. Pulled injectors on even bank looking for leaky ones. All held pressure@ 75psi on bench test with good pattern. With EZ-scan tool 6000 A/F ratio 14.6. I have the scan tool results, if they could be of help and perhaps someone that is in the know may be able to come to an conclusion. Thanks Doug

The left front is the only issue. I replaced two bearings and a speed sensor. I used top quality parts. Front end is tight. all new ball joints, tie rods inner and outer as well as front brakes.
The front passenger side was worn more than the drivers side because the ABS fires on that side every time when stopping.

Head a clank noise motor won't start

I recently replaced the alternator with a OEM reman unit. Disconnected negative battery terms before installing, reconnected after. Voltage output looks good but I am now getting service engine light. Had to remove/reinstall air intake from filter to manifold. Any ideas what might be causing the light or how to reset? no other info displayed.