1995 SE Bonneville starts then dies - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-03-2013, 09:46 PM   #31
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Nope, I was wrong, per the FSM, the PCM cuts off the fuel pump on the 95'*. The 96 and who knows what else either shuts off the starter solenoid or shuts off the injectors. And I can never remember which! Anyhoo..from the FSM.

P1626/P1629...







Sorry for the blurry pages but these books are THICK and hard to scan.
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Old 01-03-2013, 10:25 PM   #32
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Mike, thank you for scanning those pages, I really appreciate it I can read all the words with no problem. This will help to isolate my problem I am sure. Thanks again, I will post what I find..
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Old 01-05-2013, 01:56 PM   #33
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Can anyone give me an idea as to where the vats is located? I removed the glove box thinking it would be behind there, but do not see it. Do I have to remove the entire dash? Any help is appreciated. Thanks
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Old 01-05-2013, 02:56 PM   #34
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Is it located behind air bag on passenger side? If so, what is the best way to get to it?
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Old 01-05-2013, 05:55 PM   #35
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VATS module should be located up underneath the dash. You have to pull the black plastic kick panel to get to it. It should be next to the silver large PCM. I don't remember what the module looks like.
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Old 01-05-2013, 06:19 PM   #36
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Ok, here is what I have found. I believe that the VATS is located behind the air bag on the passenger side. I can see a module up there with the wires that corresponds to the troubleshooting information. Since I was not able to disconnect the cable from the vats to check for 4 to 5 volts present on the drk blue wire that goes to the PCM, I located the drk blue wire at the pcm module. I have uploaded a picture of the pcm showing the white plug with the drk blue wire.( I am hoping this is the correct wire) I cut this wire so that I could check for the 4 to 5 volts needed and did not get the required voltage. According to the troubshooting guide it would indicate a defective PCM. I did check for constant 12volts and the switched 12 volts, they are all present. Please look at my picture and see if that is the correct drk blue wire. Is so it looks like a need to find a PCM. Let me know what you think. Thanks
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Old 01-05-2013, 06:43 PM   #37
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Yes, WD is the WHITE connector on the PCM.
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Old 01-05-2013, 07:43 PM   #38
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Thanks Mike. I found a used PCM on ebay for $50.00. Do you think I will luck out and get one that works? I hate to pay $200.00 for a rebuilt one. What is your opinion? Thanks for all your help!! Hopefully it will be back on the road soon.......
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Old 01-05-2013, 09:19 PM   #39
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I don't get it because, on the 95'*, the VAT'* controls the fuel pump, not the injectors. So, we need to figure out why the injectors are shutting off.

I know the ICM controls ignition for like the first few seconds after start, then the PCM takes over. How hard is it for you to get your hands on another ICM?
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Old 01-05-2013, 09:43 PM   #40
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I was reading the troubleshooting info you posted earlier and if I am reading it correct it says that if the fuel enable signal is not seen during crank the injectors will be distabled.
I definitely do not have the 4 to 5 volts at wd 14 that is need to for the theft deterrent module to pulses to ground. However, I will follow your lead as I really have no idea what to do next other than put a another PCM in it and hope that fixes it. If my luck contiunes it won't. I can buy a new ICM and try it first. I believe that are rather pricey too.. :(
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