Last post on Apr 13, 2013 at 6:16 AM
You are in the Chevrolet Silverado & GMC Sierra
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GMC Sierra 1500, Truck
#87 of 138 Re: 03 GMC SIERRA 4.8 STALLING [ndmech14]
Aug 06, 2010 (10:00 am)
I had this problem on 2003 Silverado 4.8L and got it fixed. It needed a Throttle Body Cleaning - result was RPM increase from 400 to 600.
What didn't work - new air cleaner, replaced OEM with 130K miles; re-charge low battery (maybe it was a battery/alternator issue? It wasn't); 30-minute idle reset after all engine codes erased.
It ran well before but stalled as it slowed to approach lights or stop signs. Now it runs great!
#88 of 138 Re: Silverado 2500 5.7L stop Suddenly [john463]
Aug 08, 2010 (5:17 pm)
Mine did this on and off for about two years. It was a crank sensor. replaced it and have had no problems for 3 years. Good Luck.
#89 of 138 1993 1500 350 engine stalling
Aug 25, 2010 (11:39 am)
hey had my 93 gmc 1500 for under a year bought it used great running truck never had any trouble until last weekend it stalled coming down a hill its progressively gotten worse, it doesn't always stall it will lose power at the pedal and if i lay off gas for a few seconds and give gas it will maintain power but if i slow down to under 30km/h it stall also on sharp turns and when i come to a complete it will stall. it does not happen every time it's very random but those are the most frequent times it will stall, i just put in a new air filter, alternator, starter battery, fuel filter and fuel pump. i was told it might be electrical or possibly the carb? even the distributor.
It's a 350 5.7L with about 250k on engine and tranny also only when it dies the check gauges, and service engine lights come on, ill wait a few seconds, or even throw it into N and start it right back up again most times it will twice only i had two wait a minute or two but again it starts right up and drives until this happens again.
Any help or ideas will be much appreciated Thanks
Aug 25, 2010 (7:20 pm)
I have a 87 GMC 5.7 liter, the motor starts well when it is cold but as soon as I run it for awhile and turn off when I try and re start it the motor acts like its not getting gas. Maybe the throttle body sensor? any suggestions would be greatly apperciated. thanks Vicestate
#91 of 138 2000 5.3 stalls
Sep 08, 2010 (5:00 pm)
new fuel pump and fuel filter sprayed the throttle body with throttle body cleaner ran fine for 20 miles than died going around a corner after several attemps trying to start it it finally started but sputtered awhile then it ran fine 5 miles home with service engine light on what could be wrong ?
#92 of 138 Re: 2000 5.3 stalls [rric]
Sep 08, 2010 (10:53 pm)
sounds like a bad throttle position sensor
#93 of 138 my 01 silverado 1500 4.3l manual stalls when from gear to nuetral
Nov 05, 2010 (5:16 pm)
i have a 2001 silverado 1500 4x4 4.3l manual transmission 160k miles. it starts fine and idles fine. now 10-15 mins down the road is another story. i can always tell when its about to stall because of a hard push back when the gas pedal is depressed and a hard let go and rapid drop in rpm when the gas pedal is released, if i put it in neutral the rpms drop to nothing and the engine stalls. when i stay hard push back and let go i mean how it throws me back in my seat when depressed and hard pull forward toward the steering wheel when released. once it stalls and i either start it back up or drop the clutch and basically push start it and give it gas exhaust sounds horrible a re pa pa pa sound vs my normal smooth flowmaster sound. if i dont let it die and keep the truck moving it seems to run rough almost like its misfiring for the next couple of mins. it seems that after it stalls and i start it up, wait 30 seconds or so and rev the motor to about 4.5k it smooths out and will be fine from there. i havent done anything yet to fix this new problem but everyone i ask tells me something different. i did a code scan and got a evap error read and a bank 2 cat error read. i have changed the fuel filter about 8 months ago, replaced the ignition coil about 8 months ago and all plugs and wires 5 months ago.
#94 of 138 Rough Idle and Stalling
Nov 29, 2010 (5:12 pm)
I have a 96 GMC Sierra with a 5.7 engine and when I start it the truck idles rough and dies. This especially happens when in gear. This is the second time that this has happened the first time i cleaned the intake and MAF Sensor and it ran great also added some heat to the fuel tank.
Thanks for your help
#95 of 138 2003 stalls when slowing down
Dec 14, 2010 (12:33 pm)
I work out of town for 2 weeks at a time. Truck ran fine when I left it in the garage. No one drove it while I was gone. Started fine, went to town and it stalled at a light. It seems to idle fine, especially when first starting, but dies when rpms drop. Drives fine, lights don't go dim, alternator is okay according to gauge. changed battery. No codes or engine lights come on. truck is an 03 sierra 4.8 liter. always garaged and maintained. Seems to die when I slow down and come to a light or whenever I the rev the motor and release, the rpms drop and it stalls, but fires right back up. I do see a slight voltage drop when turning on all lights and heater and radio, but never falls below 14.5. Any help would be appreciated, money is tight as all can attest.
#96 of 138 Re: 2003 stalls when slowing down [richardo21]
Dec 15, 2010 (8:11 pm)
Sounds like a bad throttle position sensor. I would start there.