2003 GMC Sierra stall when turning stearing wheel

PEDROC

MEMBER
2003 GMC SIERRA
V8
2WD
AUTOMATIC
15,000 MILES

I would want to know what could be causing the motor to stall every time I turn right or left and going slow even when I reverse it and turn or brake hard it just stalls I have changed alot of parts and I dont know what else to do I dont know if its a powerstearing sensor that could be causing this thats the last thing that comes to mind

5 Replies

LITEFOOT

MEMBER
4 POSTS

Did you find out what the issue was with your truck? I have the exact same problem. 2003 GMC sierra 2 wheel 4.8L 50,000 miles.

Mark

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Saturday, January 17th, 2009 AT 6:47 PM

BRIAN 1

MECHANIC
1,030 POSTS

When this happens does this vehicle idle low?What are the RPM'S at? I need more info, not sure if this is a power steering pump problem or an idle quality problem. Post back with more details and will advise.

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-2

Saturday, January 17th, 2009 AT 8:38 PM

LITEFOOT

MEMBER
4 POSTS

Brian This only happens when I turn sharply left or right. The first time I was turning into a parking stall and as I cranked the wheel to line up the engine died. Shifted to neutral and it started right up. I have tested it several times just driving around it has not gone away. There is no warning such as low rpms it just shuts off. I can replicate this problem in park by cranking the wheel hard and reving the engine. After reving, as the rpms drop off it will shut down. This only happens with the wheels hard right or left.
Mark

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Sunday, January 18th, 2009 AT 5:45 AM

BRIAN 1

MECHANIC
1,030 POSTS

I want you to see if there are any codes. If you can have it scanned, maybe at autozone they will scan it for free, see if any dtcs and post back.I'LL help as best I can, but before I do I'm trying to figure out if its a low idle problem or a vacuum problem. There are a couple of bulletins on this problem. Post back with what you find and will advise.

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Sunday, January 18th, 2009 AT 9:51 AM

LITEFOOT

MEMBER
4 POSTS

No codes. After doing some more research I found someone who had the same problem and had a cure. I was advised to clean the MAF sensor, throttle body valve and replace the fuel filter. So far it has worked the problems are gone. I do not understand why these procedures worked but I am very happy that the did.
Mark