Last post on Dec 02, 2013 at 9:06 PM
You are in the Chevrolet Suburban & Tahoe
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Chevrolet Suburban, Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV
#359 of 381 2005 Chevy Suburban long start
Sep 17, 2012 (9:10 pm)
I had similar issues with my suburban. My gut told me that the issue was the fuel pump. My fuel gauge hadn't read the proper fuel level in years and only became worse. The pump was the issue, but not because it was broken. It was manufactured improperly. One of the polished rods was missing a spring. There are two of them. Without both springs, the device will not slide up and down properly and eventually wears out the rod. So much so that the rod with the spring had a visible missing area from the rubbing where it was hanging up">. This is the Chevy way. I wonder how many more of these defective pos's are on the road. I'd like to attach a photo but don't know how. After the replacement of the pump, my fuel gauge works properly and my gas mileage has improved.
#360 of 381 Re: 2005 Chevy Suburban long start [chevylemons]
by Stever@Edmunds HOST
Sep 18, 2012 (5:41 am)
From the Help link at the bottom:
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#361 of 381 Re: 2007 Tahoe with starting issues going on 3 months now!!! [suzanne333]
Nov 05, 2012 (9:02 pm)
This weekend our 2007 Tahoe wouldn't start. I tried jumping it and nothing happened. I replaced the battery thinking that had to be the problem (it was still the original). Nothing happened, not even the sound of the fuel pump or starter, just a single click. I decided to research and found this site along with another one about no starting problems and found the common thread was the mention of the TSB 07033b and the problem with the BCM. I went to the dealer today and the BCM was indeed replaced ($600 ouch!). We'll see if it resolves the problem long term. It was disappointing to hear that something that is known to cause this problem isn't part of a recall. However if I never have the problem again I'll be happy I found the answer here....thanks
#362 of 381 Re: 2007 Tahoe with starting issues going on 3 months now!!! [blainej1]
Nov 06, 2012 (9:08 am)
Keep us posted on whether the replacement of the BCM resolves the starting problems you had been having. We can be reached at socialmediagm.com (include your name, contact information, and the last 8 digits of your VIN in the initial communication).
Sarah, GM Customer Service
#363 of 381 2008 Suburban same electrical problem
Dec 09, 2012 (8:08 am)
Has your problem been fixed? I have an 08 suburb with same issue. Already replaced the battery. Not interested in playing the "lets fix this, then this, then this game with dealer". I have heard of Neg and/or Pos battery cable being the issue. Today it started acting up. Negative battery cable was very hot to the touch. I don't know if this is normal or not.
#364 of 381 Re: 2008 Suburban same electrical problem [gmlemon2]
Dec 09, 2012 (8:43 am)
It is not normal for a cable to get hot, even during repeated attempts to start a vehicle. The starter motor will of course get quite hot with repeated use over a short time interval. Electrically speaking, heat is the result of resistance to flow that is in excess of the carrying capacity of the wire. You can pretty easily see that in automobiles there are cables and wires of many different gauges. Each one is sized to carry a specific amount of electrical current.
A high amperage cable such as the one used for the main connection between the battery and the block (negative or ground) or between the battery and the starter solenoid (positive) is big for a reason: It has to carry the full power of the battery. On most cars, the starter motor requires a higher flow of current than any other device. Even when the starter is not engaged, electrical current for all other accessories such as headlights, computers, climate control, etc. flows through the cables.
A hot cable indicates that it is defective. If it is hot at one end, then the indication is for a problem with the connector being corroded or loose, either where it is attached to the cable, or where it attaches to the battery or other part.
#365 of 381 Re: 2008 Suburban same electrical problem [gmlemon2]
Dec 10, 2012 (3:53 pm)
Did the dealer flash your BCM? After having the dealer flash my BCM and installing an OPTIMA yellow-top battery, my Tahoe has not had any problems since. It is unclear whether it was the flashed BCM, the new battery, or both that has actually resolved the problem, but I'm just glad it is finally fixed.
#366 of 381 Re: 2008 Suburban same electrical problem [alanrs]
Dec 12, 2012 (5:14 am)
Thanks for the information on the cable. The negative and positive cables are as clean and as tight as they can be. To answer the other person no I have not had my BCM flashed by the dealer. After reading other blogs about people spending thousands on this problem with no resolution I am hoping to find out what the problem truly is so I can have it fixed the first time. If I might ask does anyone have an idea what the dealer charges to flash the BCM?
#367 of 381 Re: 2008 Suburban same electrical problem [gmlemon2]
Dec 12, 2012 (6:52 am)
If you had wanted for us to check into anything with your dealership (labor rates, even) we'd be happy to do so. Please send your request to us via email at socialmediagm.com (also include your name and contact information, the last 8 digits of your VIN and mileage, and the name of your preferred dealership).
Sarah, GM Customer Service
#368 of 381 Re: 2008 Suburban same electrical problem [gmlemon2]
Dec 12, 2012 (7:33 am)
I don't think there was a charge for flashing the BCM. I think it was part of a recall, but not sure. I would contact your dealer and ask them.