Last post on Nov 27, 2013 at 6:06 AM
You are in the Chevy Express & GMC Savana
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Chevrolet Express, GMC Savana, GMC Savana Cargo, Van
#61 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jun 30, 2010 (3:58 am)
The ERG is for the exhaust gas recirculation. There are a couple of sensors that can be monitored. The EGR valve may be hanging up. I read through some of the diagnostic information I have and the engine temperature sensor works with the EGR and O2 sensors.
When the van does start does it idle down nice or do you have to play with the throttle to keep it running?
I have OBDII software from Autotap. It came with a trouble shooting guide and information on the sensors. They provided a link to a web site that may be able to help.
There may be a fee for their service I do not know.
#62 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [van3500]
Jun 30, 2010 (5:00 am)
van3500 thanks tons for even replying with some great info, to answer your question ,when running the van idles down nicely and does run funny. I never have to play with the throttle.
It starts after several cranks when cold but will not start when hot till it cools off for about an hour, then starts on the second or third key turn.
What do you think about something like vapor lock ?
or even internal fuel leak ?
Hasn't anybody had this happen and figured it out yet ...
#63 of 108 Smoke from fan blower switch
Jul 05, 2010 (3:05 pm)
2000 express 1500....... the other day smoke came from my better halfs fan switch got a switch put it in soon as it was turned on started to smoke shut it right off ..... so since i had also picked up a blower resister after she told me that the fan didnt work on HI and screwed up sometimes at other speed settings thats common of a bad resistor put it in problem solved for 2 days any way today smoke again from the switch anyone have any info i will start looking for bad connections at the blower motor and so on thanks
#64 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jul 15, 2010 (8:23 pm)
Hello all. I am new but have also suffered with a "different running" 99 Savana 5.7L Vortex conversion Van. It was purchased as a project van because it would run sometimes and sometimes not. It turned out to be the fuel pump, or so I thought. It has 180K on it and the pump was replaced once in that time. I have what most may call an "extensive" background in anything that runs. Past experiences have taught me that the only good fuel pump is from the OEM. So i replaced it and was ok, or so I thought. Van would run good and then not restart when cut off and restarted. I had voltage and no pump pressure. After unsuccessfully trying to find issue i sent it to local dealer. Here comes the punch line. They replaced the wiring connector down at the front of the fuel tank belly pan. WHY? Because in my diagnostic steps I found out to get the van to restart I needed to unplug that connector and plug it back in and the vn would crank. The dealer found that the connector was heated up in one spot and melted. The wire in that area would loose contact when it got hot and top the pump from running. haven't had THAT problem since the connector was replaced.
#65 of 108 Re: Van started/stalled then ran great for a year until now! [veggs2000]
Jul 15, 2010 (8:40 pm)
I see the last entry was a while ago but maybe I can help someone who is searching this thread.
I took a trip with my van after replacing radiator, ECM fuel pump and tuning it up. It ran fine on the trip but once home i seemed to get rough and have a miss. Based on past history with the 5.7L Vortex I went after the intake gaskets. Found out they were already replaced. Problem seemed to still be there. Gave up and took it to the dealer and they gave me heart failure with their "quote". I did replace the crank sensor.( If this is done and the bushing in the timing cover comes out with the bolt try gluing it back in there with silicone. Worked for me).
Fast forward a year and I find out part of my problem. Had both Cats removed for"inspection" and was surprised when there was not one ounce of catalyst in either one. Muffler appears good and van does have great power. I can only guess when the Cats failed they were plugging up the exhaust and causing the van to chug and die out. Could be the reason for the noise in the exhaust.
hope this helps somebody save their nerves.
#66 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [scjh_1]
Jul 16, 2010 (2:30 am)
I will LOVE you for a long time( I can say that I am a woman) if you just figured out what is wrong with my 96 Chevy Express van with the vortec 350 (5.7 l) I have had the same issue and have replaced so many parts its not even remotely funny. My van will start cold but will never restart if its hot. I have had it to 4! count them 4 mechnics now and no one can figure it out but say replace this and replace that. We replace parts and it still wont start when its hot. Otherwise the van runs awesome and looks awesome but wont restart if its hot. Wait an hour and a half and then it will restart.
I hope this wasnt a expensive part as it will be the very next thing that I replace.
Oh , mine will start right away if you take off the air filter and box and spray carb cleaner into it for 3 seconds then put it back together and it starts ever time.
I am so tired of this problem, I hope this is the part it needs to fix it , THANK you scjh 1 !!!! I will let you know !
#67 of 108 intermittant fan/blower cut out
Aug 15, 2010 (10:31 am)
03 savana , new to me for 5 mos. Replaced AC condenser coil ( it was MIA from schlock wreck repair and resell lot) belt on Comp. Idler at comp. recharged the AC and held! All set right? Nope..still need upper and lower fan shroud to use AC below about 40 MPH for air flow to keep the HI pressure side low enough to not hurt the system I was told. Shopping for them now ( about 106 from dealer).
But the rub is now, my fan (on high) will run fine for a few mins, then seem to fade out, then back OK again...I tried the manly fix or smackin the dash..no joy. Fiddlin with the knob from MAX to AC ,no real diff. Going from HI to next down and BACK does seem to kicjk it back up again in less time then NOT fiddling with it.
I think I see the resister on the blower housing, and checked the plug, all loks peachy keen and probably new being as it was a wreck.
I DO have a vacuume leak somewhere, gotta pull the file cabinet and get the dog house out to search, can't hear it fron under the hood..maybe that is dinking with the system?
#68 of 108 2003 Express No Spark
Sep 10, 2010 (5:38 pm)
Hello everyone! I'm new here so I hope that I will post this correctly. Looking for anyone who has some input because I'm about ready to pull my hair out......I have a 2003 Express with 4.8L V8 and I have no spark, this is what i've done so far.
Replaced Plugs and wires
Replaced Crankshaft Position Sensor
Can anyone suggest where the next step is??
The issue I have is getting it anywhere to get a code reader on it but thought I'd try to rule out some of the starting points etc........
I'm going crazy but any info would be appreciated! Thanks in advance.
#69 of 108 Chevy 2000 Express start and dies
Sep 21, 2010 (7:07 pm)
I have a 2000 Express conversion van 5.7 engine, It would start and
run for 10 to 30 seconds and die, it would start right back and drive ok until I stopped for over 10 minutes and it would do it all over again, start and die, start and drive ok. No codes on OBD2 scanner and security light off.
After checking everything trying to find the problem. I removed passlock module.
and scanner read P1626 Theft Deterrant System Fuel Enable Circuit. With passlock module removed it would start and die as before. Let it set overnight and tried again next day. Still with module removed started and died 3 times. Connected module and no more problems. It runs great and has not died again. Passlock module is located under dash, right side of steering column, just above
gas pedal cable and back towards steering wheel, It is sort of hide,
I also found in a manual, if a magnet is placed near passlock sensor it will cause vehicle control module to lockout mode and turn on security light, My light did not
stay on. The pickup sensor is just below key lock cylinder very close to the key entrance. My problem all started with a spare key with a magnetic tag on the same key ring. This van does not have alarm system, horn blowning and head lights flashing, Just the key passlock system.
#70 of 108 98' Savana - At a Loss....Won't start
Oct 01, 2010 (11:17 am)
I have read through all of the messages on this forum that relate and have foundsome useful ideas. I don't want to throw money to the wind and frankly can't afford to! My 98 Savana 5.7 has had the security light on solid for a few months my wife tells me...I recently returned from a deployment and after driving the van for a few days I parked it in the driveway last week and now it wont restart. It cranks and attempts to start but will not stay running. It has fuel pressure at the fuel rail and if I spray ether in the air cleaner it will stay running until I stop. It obvisously has spark as well. I dont know where to go from here....should I replace the ignition switch as some have suggested? I honestly don't know if the passlock is the issue as the light has been on for so long and it just now won't start. Or do I begin with a crank sensor...but it has spark? Help please as we are a large family with this as our only vehicle that can take us all. Thanks in advance