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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Starting Problem 99 G500
I was driving in the hills yesterday and the G just stalled. No prior indications. I had key parts with me and changed the fuel pump, CPS and k40 relay but still no luck. It turns over, the fuel pump pumps, but there's no start. Electrics are not my big thing so any help would be great. Fuses are all ok in the passenger footwell. I disconnected the relatively new MAS and tried but again no start.
I connected the DAS but it wouldn't let me interrogate the individual control units. I did get a couple of error codes after a 'quick check': on the instrument cluster - B1040 and on the ETC - 132, 135 and 147, which are intermittent faults and equate to 36, 39 (CAN related) and 51 (gear related).
I'm hoping it's an obvious and easy fix for someone? Any help would be great.
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
Sorry to hear about this problem, and odd that this happens AFTER the worst of summer is over. Do the red/green lights under the mirror do anything when you try to crank? |
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
The red and green don't light up at all when I crank. The central locking works and the batteries are new. I pulled a HT cable and took out the spark plug and had my son crank it while I held the spark plug to the block; no spark. So, look like a problem with the ignition somewhere. |
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
I was thinking, if the mirror lights were flashing it might indicate the immobiliser was stopping the car from starting. Do the lights normally work when you lock/unlock using the remote?
I recall once on the G500 the immobiliser antenna (the ring around the ignition switch) came loose, and the car would crank but not start, until it was put back in place. Might be worth looking behind the panel in that area to make sure the thin wire for the antenna is still connected...if you haven't already done this of course. |
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
Good thinking. I had a semi-serious thought that it could be that but couldn't face the prospect yesterday of removing the steeering wheel, wood strip et al to get at it. Now that you've suggested it, I'm just going to have to do it! Thanks for the help. |
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H1LM002G55
Expert
Date registered: Mar 2010
Location: S Florida / Geneva / Jeddah
Vehicle(s): 500 GE, G55, LM002, H1
Posts: 1796
| Re: Starting Problem 99 G500
Wood strip across dash is very easy to remove. Just pry very, very gently with a spatula type trim panel remover....and take your time. It helps to start at passenger side of dash IIRC. The outer edge, past the glovebox. |
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
Yes, I've done it several times before but you need to remove the screw hidden behind the steering wheel moulding etc...
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
Or just leave that screw off, I know a few people do that, it makes removing the trim strip without removing the steering wheel possible. The airbag is a pain to get out. |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Starting Problem 99 G500
nadd - 10/7/2012 6:28 AM
The airbag is a pain to get out.
It's pretty simple and easy, if you have the correct tool. |
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
DUTCH - 10/7/2012 11:44 AM
nadd - 10/7/2012 6:28 AM
The airbag is a pain to get out.
It's pretty simple and easy, if you have the correct tool.
I should qualify, this might be just in my case, on some older cars the torx screws are worn and a positive engagement is tricky. I suspect someone may have tried to undo them using the wrong socket, which again emphasises the need for the right tool. |
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AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| Re: Starting Problem 99 G500
nadd - 10/7/2012 3:28 AM Or just leave that screw off, I know a few people do that, it makes removing the trim strip without removing the steering wheel possible. The airbag is a pain to get out. The other alternative is to cut the strip into two pieces right through the screw hole. The cut is not visible. Glue the screw into the hole it threads into to act as a locating pin. Works great for me.
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
So, managed to remove the wood strip, without removing the wheel (thanks for the tip Nadd) , the screw, thankfully, wasn't holding. Got the transponder off, cleaned up the contacts in the control box etc...replugged it all in and...nothing. I'm picking up a new transponder this afternoon (168 462 02 53) for about $17, which if it isn't the problem is not too much to regret. |
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
I hope it's something simple like that. On the off chance, maybe disconnect the battery for a while, in case that resets something.
I have had a failure to start when the ring was not in place to read the chip in the key, but never tried disconnecting it with the engine on, to see if it causes a stall. |
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chubby
Member
Date registered: Jan 2012
Location: SoCal
Vehicle(s): 1973 FJ55; 2000 G500
Posts: 19
| Re: Starting Problem 99 G500
perhaps a bit of a tangent here- but is there a way to disable the immobilizer? |
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AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| Re: Starting Problem 99 G500
chubby - 10/8/2012 2:11 PM perhaps a bit of a tangent here- but is there a way to disable the immobilizer? The immobilizer is part of the engine computer. As far as I know, if it isn't happy, you either get no fuel (diesel) or no fuel and no spark (gas). Removing the immobilizer would require reflashing new firmware onto the engine computer.As far as I know that firmware version doesn't exist. I'd love to have it if it were available. That is just one less thing to leave you stranded somewhere.
One common case: A failed K40 relay will cause a no-start simply because the engine computer doesn't get enough current to work correctly. The symptom should be alternating red/green lights in the mirror assembly.
Edited by AlanMcR 10/8/2012 6:35 PM
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
Fitted the new transponder but still no start. I am now officially flumoxed and into a bigger guessing game. It looks like I may have to resort to a MB garage; the first time for this truck in 8 years!
If I ever find the problem/solution I'll come back to this thread. |
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nadd
Expert
Date registered: Apr 2006
Location: UAE, Dubai
Vehicle(s): G500 2016 LHD, numerous Chevys
Posts: 1285
| Re: Starting Problem 99 G500
Good luck with that, I for one am very keen to hear the successful outcome. |
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
Ok, problem solved, at least to the point where the car is useable. There is a problem somewhere in the ignition system and it keeps blowing the 15Amp fuse (in the passenger side fuse box, fuse no 25), which is for the ignition coils. We managed a weekend in the dunes but the car blew the fuse again on the way home. (Please do not ask me how I found out the cause of the original problem!).
Question is, what might be causing the ignition coil/s fuse to blow like this? I have to ask because my knowledge if electrical sytems is embarassingly poor. |
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J.R.
Elite Veteran
Date registered: Apr 2006
Location: Southern Maryland
Vehicle(s): 00 G500, 09 911 4S, 11 Cayenne S, 86 280GE (sold)
Posts: 828
| Re: Starting Problem 99 G500
MiN - 10/6/2012 7:11 AM
I pulled a HT cable and took out the spark plug and had my son crank it while I held the spark plug to the block; no spark. So, look like a problem with the ignition somewhere.
Was fuze 25 blown before, after or by this test?
Was there any recent work/diagnostics performed around or near the coil pack wiring harness?
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MiN
Extreme Veteran
Date registered: May 2006
Location: Alpujarras, Spain
Vehicle(s): No cars, at all.
Posts: 555
| Re: Starting Problem 99 G500
To be honest, I don't know but I reckon it was blown before. No recent work around the coils. Baffling? Yes. |
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