G80 problems

[TRCM]

Well, I called the GM Customer assistance/satisfaction number, and after 4 days of researching it, they called me back and said the G80 indeed works in both directions, and that they will be forwarding the info to the dealership.

 

Now, it is doing it in both directions, and it is pretty easy to reproduce here at the house due to all the rain.

 

I have also noticed that the tracton control light comes on when it does it, and I am also beginning to wonder if there is anything they CAN do. When it happens, the tire spin is very minimal, and at least when it does it, I can give it some more gas, and it locks in (albeit it while throwing my yard all over the place) pretty hard. I am thinking something is delaying the actuation, and that is why I am spinning so much.

 

I am really beginnig to wish I didn't have the G80, as then I could put a real locker in it and not have this issue. I can drive thru this same spot with my jeep and not even spin a tire, but it has a real locker in it (real as in instant engagement, not 100 rpm diff).

[kstruckcountry]

It should lock right in, when mine does you can hardly tell which skid began first. I never give it much throttle, I just crawl around 1500RPM. It locks without me having to try to get it to.

 

I'd find a different dealer, you shouldn't have to explain how their product works to them.

[dewfpo]

It should lock right in, when mine does you can hardly tell which skid began first. I never give it much throttle, I just crawl around 1500RPM. It locks without me having to try to get it to.

 

I'd find a different dealer, you shouldn't have to explain how their product works to them.

 

 

My experience is the same.

 

DEWFPO

[BlackZ71Silverado]

Sounds like you definately need to find another dealership, one with a service department that actually knows how the vehicles they are selling operate. There is no excuse to have an uneducated service department, it all falls on the owner of the dealership. Find somewhere else to go, stay away from that place!

 

With absolutely no clue how the G80 is supposed to function, there's no way I would allow them to take it apart and "fix" it.

[Portdriver]

Sounds like you definately need to find another dealership, one with a service department that actually knows how the vehicles they are selling operate. There is no excuse to have an uneducated service department, it all falls on the owner of the dealership. Find somewhere else to go, stay away from that place!

 

With absolutely no clue how the G80 is supposed to function, there's no way I would allow them to take it apart and "fix" it.

 

 

Man has a point! Let'em work/learn on mine? Ain't happening!

[HawkScot]

My Dad had trouble getting up his short drive one day recently. It was in 4wd, he was going slow and about half way up 30' driveway, he came to a stop with just one side spinning... he tried several times and finally put it in low range, went right up and in the garage... he was concerned that his G80 was not working, took it to the dealer and they "tested it" and said it was fine. He asked them to explain how it worked to him, sounded to me like they just blew him off when Dad told me about it... Dad was not satisfied so he found a safe place to give it a workout. all seemed to work okay for him, he went back home and has not had anymore chances to see if it is different... his wife said the noises it made when shifting in and out of 4wd were different than before but he did not think so...

 

Find a dealer that you trust...

[TRCM]

I have a 2008 Silverado, 5.3 engine, 4l60e trans, 4wd, and the G80 locking rear dififerential.

 

The problem I am having is when you back up on grass or any slippery surface (like exist at boat ramps), the G80 doesn't lock when backing up, it just lets the right rear tire spin and dig holes in my yard, even if you rev the engine. While it is doing this, you can hear a reasonably loud clicking noise coming from the rear differential.

 

I took the truck into the dealer to get it looked at, and they proceed to tell me the G80 is not designed to work when backing up. After explaining to them how the G80 is built, showing them a diagram of what parts make it work in both directions, and even mentioning that the company who actually makes the G80 that goes into the rear axles they sell says it IS supposed to work in forward or reverse, they have done nothing. They insist that it isn't designed to work in reverse. (They have ignored the fact that even IF the G80 doesn't work in reverse, the rear differential should not click when backing up).

 

I asked them then, what sense does it make to build a truck that can go forward until the tires slip, but can't back up to get out of the slippery situation it is in ??

 

I also asked them why are there 2 locking pawls inside the differnetial, mounted 180 deg apart, so that 1 can only be engaged when the axle is rotating in a forward direction, and the other can only be engaged when the axle is rotating in a reverse direction if the G80 sins't supposed to lock when backing up ?

 

 

Anyway, I finally called the national GM customer service number, and explained the problem to one of the people there. He said he was not a tech, but would get with the engineeers to get me an answer. Well, true to his word, he called me after the weekend (I called on a friday), and explained to me that the G80 is indeed designed to work in both directions, and that he would forward the information to dealership so they could get my truck working correctly.

 

The dealership is now claiming they have never received any information, so I call the customer service guy back, and he said he would try again to get the info to the dealer. Again he called me back a day later, and said he has not been able to get any response from the dealer, and would be forwarding the info to someone who could better be able to get in touch with the dealer to get the information to me. (They claim they can't send the info to me so I can take it to the dealer).

 

Now, this new person called me and told me in no uncertain terms, that they called the dealer, and since the dealer says the truck is working fine, that they can not go against that.

 

 

What prompted me to call the customer service line in the first place, is when I called the area GM dealers, 50% of them said the G80 does not work in both directions, and the other 50% said it did. When I told him this was why I called, his reply was to take it to one of the dealers who agrees with me, having no concern with the fact that different dealers are saying different things about whether it is a problem or not.This seems to be a problem to me if the people who are supposed to work on the truck don't know how it works. They read me the GM information on the G80, and it does not say it works in reverse, and it also does not say it doesn't. The information is very generic/vague at best, simply saying there is a locking pawl that engages to force both axles to turn when wheel slippage of greater than 100 rpm is detected.

 

My question, is there anyone here who can get the correct answer, and not just what the dealer says ? Anyone that can get me a contact # to someone that KNOWS what a G80 is at least ?

 

I can't tell you how many times I have had the truck in to this dealer for a problem, which they of course then claim is not a problem, right up until I give them the TSB or PIT #, then suddenly, it's "oh yeah, we can fix that".

 

This attitude they seem to have about repairs makes me feel they are just trying to avoid fixing or replacing the G80, and I am about to the point of getting rid of the truck since it is worthless to me if I can't back up my boat across wet grass or thru a mud puddle. These things frequently exist at boat ramps around here, and towing my boat is why I have the truck.

 

Can anyone help me please ???

[TRCM]

I tried to add this to a post I made about this problem many months ago, but couldn't find it.

 

I have a 2008 Silverado, 5.3 engine, 4l60e trans, 4wd, and the G80 locking rear dififerential.

 

The problem I am having is when you back up on grass or any slippery surface (like exist at boat ramps), the G80 doesn't lock when backing up, it just lets the right rear tire spin and dig holes in my yard, even if you rev the engine. While it is doing this, you can hear a reasonably loud clicking noise coming from the rear differential.

 

I took the truck into the dealer to get it looked at, and they proceed to tell me the G80 is not designed to work when backing up. After explaining to them how the G80 is built, showing them a diagram of what parts make it work in both directions, and even mentioning that the company who actually makes the G80 that goes into the rear axles they sell says it IS supposed to work in forward or reverse, they have done nothing. They insist that it isn't designed to work in reverse. (They have ignored the fact that even IF the G80 doesn't work in reverse, the rear differential should not click when backing up).

 

I asked them then, what sense does it make to build a truck that can go forward until the tires slip, but can't back up to get out of the slippery situation it is in ??

 

I also asked them why are there 2 locking pawls inside the differential, mounted 180 deg apart, so that 1 can only be engaged when the axle is rotating in a forward direction, and the other can only be engaged when the axle is rotating in a reverse direction if the G80 sins't supposed to lock when backing up ?

 

 

Anyway, I finally called the national GM customer service number, and explained the problem to one of the people there. He said he was not a tech, but would get with the engineeers to get me an answer. Well, true to his word, he called me after the weekend (I called on a friday), and explained to me that the G80 is indeed designed to work in both directions, and that he would forward the information to dealership so they could get my truck working correctly.

 

The dealership is now claiming they have never received any information, so I call the customer service guy back, and he said he would try again to get the info to the dealer. Again he called me back a day later, and said he has not been able to get any response from the dealer, and would be forwarding the info to someone who could better be able to get in touch with the dealer to get the information to me. (They claim they can't send the info to me so I can take it to the dealer).

 

Now, this new person called me and told me in no uncertain terms, that they called the dealer, and since the dealer says the truck is working fine, that they can not go against that.

 

 

What prompted me to call the customer service line in the first place, is when I called the area GM dealers, 50% of them said the G80 does not work in both directions, and the other 50% said it did. When I told him this was why I called, his reply was to take it to one of the dealers who agrees with me, having no concern with the fact that different dealers are saying different things about whether it is a problem or not.This seems to be a problem to me if the people who are supposed to work on the truck don't know how it works. They read me the GM information on the G80, and it does not say it works in reverse, and it also does not say it doesn't. The information is very generic/vague at best, simply saying there is a locking pawl that engages to force both axles to turn when wheel slippage of greater than 100 rpm is detected

My question, is there anyone here who can get the correct answer, and not just what the dealer says ? Anyone that can get me a contact # to someone that KNOWS what a G80 is at least ?

 

I can't tell you how many times I have had the truck in to this dealer for a problem, which they of course then claim is not a problem, right up until I give them the TSB or PIT #, then suddenly, it's "oh yeah, we can fix that".

 

This attitude they seem to have about repairs makes me feel they are just trying to avoid fixing or replacing the G80, and I am about to the point of getting rid of the truck since it is worthless to me if I can't back up my boat across wet grass or thru a mud puddle. These things frequently exist at boat ramps around here, and towing my boat is why I have the truck.

 

Can anyone help me please ???

[travis73]

I don't know how you are going to convince them,I would keep at it though,my G-80 locks in reverse and every G-80 I have ever owned did indeed lock in reverse.Keep at it eventually they will have to fix the problem.

[txab]

Here's your original thread.

 

http://www.gm-trucks.com/forums/index.php?showtopic=142935&hl=

[TRCM]

Here's your original thread.

 

http://www.gm-trucks...opic=142935&hl=

 

 

Thanks, it didn't come up when I searched for it earlier.

[Z45]

The only advice I can offer is to stop dealing with this dealer, they or at least the person who is dealing with you is an arogant ahole. The more you push them the more stuborn they will get and won't admit they are wrong. There are lots of them out there who feel they know it all. I have met a few myself.

[flyboyron]

I hope they get yours fixed without any more hassle.

 

Man, I hate when they treat customers like that.

 

Something like that happened to me where my 01 Silverado would lean on the front left side.

 

The truck was at least 1" lower on the front left side than the front right. It looked like it was always parked in a pot hole.

 

I had it at the dealer and they tore it apart 3 different times and could not get the truck to not lean.

 

Their final excuse......I mean reason....was that all Chevy's lean. They said I could go out to the parking lot and measure every vehicle and they would all lean.

 

What a load of BS.

 

I finally traded it for an 02.

[GMCustomerService]

I can look into this for you. In order to do so, I will need the last eight of your VIN and your case number. Contact me privately for more assistance. Thank you.

 

Tricia, GM Customer Service.

[TimmyG]

I hope they get yours fixed without any more hassle.

 

Man, I hate when they treat customers like that.

 

Something like that happened to me where my 01 Silverado would lean on the front left side.

 

The truck was at least 1" lower on the front left side than the front right. It looked like it was always parked in a pot hole.

 

I had it at the dealer and they tore it apart 3 different times and could not get the truck to not lean.

 

Their final excuse......I mean reason....was that all Chevy's lean. They said I could go out to the parking lot and measure every vehicle and they would all lean.

 

What a load of BS.

 

I finally traded it for an 02.

they do

 

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