Last post on Sep 19, 2013 at 3:05 AM
You are in the Chevy Express & GMC Savana
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Chevrolet Express, GMC Savana, Chevrolet Express Cargo, Chevrolet Sportvan, Chevrolet Chevy Van, Chevrolet Chevy Van Classic, Van
#601 of 655 Chevy Express Starting Problems
Feb 07, 2009 (9:27 pm)
I have a 2001 Chevy Express 3500. 5 months ago I started having issues where I would have to turn the vehicle over 2-3 times before it would start. Coming back from vacation I let the Van sit for 5 weeks and could not get it started. The vehicle runs fine once started, Idles fine, no issues, but takes 3-6 times to start now, and have had to get a new battery or charge the old to keep cranking. I am wondering what would be the first thing to look at. The last time I had to wiggle the (inside the motor) fuse box and it cranked right up. Any suggestions would be helpful. Thanks in advance.
#602 of 655 1999 Express surging over 40mph
Feb 14, 2009 (3:51 pm)
I have a 1999 express van with the 5.7 V8. While driving at speeds over 40 mph the motor is starting to stumble - will hold/increase speed but does it under minor protest. Any help would be nice.
I'm thinking fuel pump (only have 50psi - should be 65ish?)
180,000 miles with new plugs, wire, cap, rotor, oil change, air filter, and fuel filter
#603 of 655 Re: 97 g10 express bad idle, hesitation [hopkinstx]
Feb 17, 2009 (5:10 pm)
You posted your message over two years ago and it helped me. Thank you. I too replaced the fuel pump . . . and the fuel regulator and was thinking about the fuel injectors. You are right--that mass air flow sensor does make a difference--it needs to be clean and just spraying alone won't do it. On the can of CRC MAS cleaner they say don't touch it, but you have to--just very, very gently with a sharpened erasure sprayed with cleaner and periodically wiped on a clean cloth. The center of each hair-thin wire looks like a very small resistor. The side that was dirty on each was the side facing the air flow. The engine side of the wire/resisters looked clean. I got out my magnifying glass to check it out. Thanks again. I haven't read about this anywhere else.
#604 of 655 Express Van service codes
Feb 20, 2009 (9:02 am)
I have a express van with the 5.7 V8 that is giving me 3 check engine codes
P0161 - o2 heater bank 2 sensor 2 (which side - o2 after cat?)
P0300 - misfire (Will low fuel pressure cause this one?)
P0420 Cat. efficient low on Bank 1 (what should I check?)
Which side would bank 1 and bank 2 be? I have replaced both of the O2 sensors on the passenger side last year.
#605 of 655 GMC Savana vs. Chevy Express
Feb 24, 2009 (2:32 pm)
Are these two vans the same product off the line excpet for the name plate?
Great forum here!
Feb 27, 2009 (7:57 pm)
Zoyberg, I dont think your fp is your problem. 50 is actually normal. 58-63 is the book amount I think, but virtually all the ones I ve checked are 50-54 running.
I believ its the difference between key on and running with vacuum pulling the fp down alittle.
Since you did plugs and wires, thats probably the problem. Put cheap copper plugs in again, and check the wires carefully. The hesitation is undoubtably a mis causing your nisfire code. The bank 2 sensor 2 should be the passenger side rear (after cat) o2 sensor. My scanners can watch each o2 sensor seperatly to verify the operating condition.
The 420 code, has me stumped, other then a lazy o2 (rear drivers) or a bad cat itself. If you have plugged cats, that could cause your mis, the exhuast not being able to get out, thus causing a huge back up in the cylinder. Ussually they get progressively worse till the cat is completely closed and the veh will not run, or just barely. I would suspect the cats, maybe more if you towed with it, and or it has a lot of miles.
Ronwind: Yes the gmc and chevy express are the same vehicle with different name plates. Some say the gmc's are built better, and I always laughed at that, but just recently I compared an 04 express to my 03 savana. The savana does have some bolts holdng small trim peices on were the express does not, and it uses a spring clip. So it does infact look like the gmc maybe built a tinny bit better.
The grills and trims are different but all the major parts interchange, and many of teh van parts interchange with the chevy/gnc trucks also, like the 1500's and 2500's.
Most of the van parts are left overs from previous year truck builds. The vans get the left over stuff.
The 04 express awd, I just referenced is almost done......I put on larger combustion chamber heads, a mls head gasket, head studs, a z06 vette cam, a cummins intercooler, and ballbearing pt 72 turbo. It should make in the middle 500awh area soon.
#607 of 655 Re: 2008/2009 Chevy Express [gmjohn]
Apr 07, 2009 (1:34 pm)
2005 AWD Express Explorer Conversion with Tow package, 5.3L AWD.
I tow a 30ft I/O Pontoon most weekends May thru September, 25 to 30 miles each way. You really know it is there mostly at 50MPH+. From a stop you hardly notice. When I first tested a similar tow vehicle it had a 5.7L and was much better at the 50MPH+ speeds. Start/Stops were equal.
Hope that helps.
#608 of 655 expess 3500 turn/brakes light problems
Apr 14, 2009 (8:18 pm)
right turn signal works good thenwhen i put brake on turn signal speeds up, ??? how do I fix
#609 of 655 Re: expess 3500 turn/brakes light problems [cjolibois]
Apr 17, 2009 (12:12 pm)
you got me on the turn signal....it would look at the bulb, the wiring and teh grounds near the tail lights first.
The reason they fall on there face at 50 + mph is power and gear ratio. The 4l60e takes a huge jump from 2nd to 3rd. 3rd is 1 to 1, and if you dont have the tow package you have 3.42 gears. Tow package vans got the 3.73's. A huge improvement is to reprogram the pcm for different/later shifting. Hold second longer and have it shift to 3rd at a higher rpm/speed. This could be done only when towing via programming but would be harder then just having it do it all the time.
When I bought mine, I reprogrammed it the next day.......and I still tweak it alittle when time permits. Alot of my job is programming trucks for tire/gear changes, and doing dyno/road tuning on gm cars (vettes, ta's and camaros) which are all virtually the same as the van.
#610 of 655 Express 3500 4x4 Diesel?
Apr 20, 2009 (5:45 pm)
Did they make a 3500 Express 4x4 Diesel?
If so, what years were then available?