Mechanics

CHEVY MY TRUCK IDLES LOW AND DIES. HELP!

2003 Chevrolet Silverado

Engine Performance problem
2003 Chevy Silverado V8 Two Wheel Drive Automatic 86000 miles

My 03 Silverado started acting up again. A year ago I had this problem and it mysteriously went away after a few weeks. A few days ago it started the low idle and power loss again. I thought the battery was no good, charged it, still the same prob. I thought ok maybe its the alternator, went down to the auto parts, got one and popped it in. That wasnt it either. Now it seems like its just getting worse. I start the truck and it immediately idles down very low between the 0 & 1 rpm mark and then just dies. If I dont hold the gas peddle down it wont stay running. If I turn on the air conditioner it just sucks all the power from the truck and it will die even quicker. Lights will dim down as the idle drops lower.
I havent tried taking it on the road since. Strangely when this started my oil pressure gauge began working and then not working. Now the " ding ding" noise when I leave the door open or the key in the ignition is working. I recently had the plugs & wires, airfilter and oil changed and it was running fine after the service. I have heard of this problem from others with a 03 Silverado, any suggestions?
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Chevycamarogirl
August 18, 2008.



I think the two things I would do first is to see what codes are in the PCM.
Second, I would have the pcm read to find what calibration software is in it.

Then you can find what the most recent one is here:

http://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

This may be a reprogamming problem.

Get you some intake and throttle body cleaner and a baby bottle brush and take off the air intake and clean out the carbon build up works great my 03 was doing the exact same thing I changed the alternator and battery and still the same thing. $230 later I pick up the $3 bottle of cleaner and it did the trick live and learn

Tiny
Slee
Oct 4, 2008.
THANKS FOR THE ADVISE. I GOT SOME CLEANER AND SPRAYED THE MAF SENSOR OUT YESTERDAY. I WILL TRY CLEANING THE INTAKE TOO. I DID PUT IN A K& N AIR HOG AIR FILTER JUST BEFORE THIS STARTED. SOME SAY NOT TO USE THOSE FILTERS BECAUSE OF THE OILS ON IT. I USED IT IN MY CAMARO AND MY MOTORCYCLE WITH NO PROBS, MAYBE MY TRUCK IS JUST PICKY. THANKS AGAIN. I WILL POST RESULTS. L

Tiny
Chevycamarogirl
Oct 6, 2008.