I imagine to have a fuel issue - The 1947 - Present Chevrolet & GMC Truck Message Board Network

yellowGT · 08-31-2011, 06:35 PM

So my wife has a 01 suburban with the 5.3 its been great up until not long ago when I noticed that it will never crank up on the first go unless its the first time its been started for the day. The truck will turn but wont crank but after shutting it off and giving it another go then it will start up. Here lately when I drive it and since I know it acts up I will open the key to on position without cranking it then I shut it off and turn it back on to crank it on. It will crank without problems. Now, there's no service light on or anything. I have swapped the filter out a few months ago and still acts up. ANY idea of what it could be? Maybe the pump not pumping enough? maybe the regulator if equipped with one?

usmcchevy · 08-31-2011, 06:59 PM

Regulator or possibly the pump going bad. The regulator is on the drivers side fuel rail. It has a small vacuum hose on it. Pull the hose off, if there is gas in the hose replace the regulator.

bighaas79 · 09-01-2011, 07:13 PM

Your on the right track. Either regulator, leaking injector, or bad check valve in the pump.

08-31-2011, 06:35 PM	#1
yellowGT Registered User Join Date: Jan 2006 Location: Garland, TX Posts: 970	I imagine to have a fuel issue So my wife has a 01 suburban with the 5.3 its been great up until not long ago when I noticed that it will never crank up on the first go unless its the first time its been started for the day. The truck will turn but wont crank but after shutting it off and giving it another go then it will start up. Here lately when I drive it and since I know it acts up I will open the key to on position without cranking it then I shut it off and turn it back on to crank it on. It will crank without problems. Now, there's no service light on or anything. I have swapped the filter out a few months ago and still acts up. ANY idea of what it could be? Maybe the pump not pumping enough? maybe the regulator if equipped with one? __________________ '84 swb chevy '69 swb chevy '68 swb chevy '95 Impala ss-sold '89 chevy crew cab dually 3+3 Last edited by yellowGT; 08-31-2011 at 06:42 PM.

08-31-2011, 06:59 PM	#2
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: I imagine to have a fuel issue Regulator or possibly the pump going bad. The regulator is on the drivers side fuel rail. It has a small vacuum hose on it. Pull the hose off, if there is gas in the hose replace the regulator. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

09-01-2011, 07:13 PM	#3
bighaas79 Registered User Join Date: Nov 2008 Location: manly iowa Posts: 390	Re: I imagine to have a fuel issue Your on the right track. Either regulator, leaking injector, or bad check valve in the pump.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.