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Gas Gauge Sticking

marsh_huntr

By marsh_huntr
in Ask A GM Technician

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marsh_huntr Enthusiast

marsh_huntr

Posted
Posted

I have a 2007 Gmc Sierra Classic 4.8L 4x4.It has 65,000 miles. The gas gauge will stick at half tank. When I fill it up it goes to full then go to 1/2 tank and stay there. Sometimes it bounces around. I have had a new fuel sending unit installed and had the local GMC dealer check the gauge. He said the gauge is fine. I am now taking it back to the stop that replaced the sending unit and they are going to check the new one and possibly install another. Have any of you had this happen?

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

the dealer has "gauge tool" that puts certain ohms thru a gauge and when the gauge responds ,the gauge is good ,so buddy at your cornerhack garage messed it up,I bet they charge you for it cause it can't be the techs fault !!!

marsh_huntr Enthusiast

marsh_huntr

Posted
  • Author
Posted

actually the guy at the "cornerhack" used to be a GM mechanic and opened his own garage. He is paying for the diagnostic charge at the stealership and replacing the part for free, thanks for your help

jhm Senior Enthusiast

jhm

Posted
Posted

Anyone who goes to the dealer for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
Anyone who goes to A Garage for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Fixed.

nothing wrong with the dealerships...9 chances out of 10 they save you money as they have access to much better more advanced diagnostic equipment that would bankrupt the ma and pa garages out there...also they know how to use the stuff. Not only that, they have access to TSB's and work on your type of vehicle all day every day.

 

Not saying that there aren't good garages out there, I know quite a few guys that I recommend to people all the time if I don't have time to help...but when it comes to something very in depth, the dealership is where you should be heading.

 

Everyone gives them such a bad rep....the cheapest place I could get tires was the dealership...and they did a crank relearn for me for free.

jhm Senior Enthusiast

jhm

Posted
Posted
Anyone who goes to A Garage for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Fixed.

nothing wrong with the dealerships...9 chances out of 10 they save you money as they have access to much better more advanced diagnostic equipment that would bankrupt the ma and pa garages out there...also they know how to use the stuff. Not only that, they have access to TSB's and work on your type of vehicle all day every day.

 

Not saying that there aren't good garages out there, I know quite a few guys that I recommend to people all the time if I don't have time to help...but when it comes to something very in depth, the dealership is where you should be heading.

 

Everyone gives them such a bad rep....the cheapest place I could get tires was the dealership...and they did a crank relearn for me for free.

 

To each his own. The last time I was at the dealership who since closed, not because they lacked business, I think they saw the GM writing on the wall, closing dealerships against the owners wishes, they tried to get me to pay $700.00 for replacing front diff seals. My INDEPENDENT mechanic in business for 30+ years did the job with oem seals for $170.00. Choose for yourself!

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
Anyone who goes to A Garage for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Fixed.

nothing wrong with the dealerships...9 chances out of 10 they save you money as they have access to much better more advanced diagnostic equipment that would bankrupt the ma and pa garages out there...also they know how to use the stuff. Not only that, they have access to TSB's and work on your type of vehicle all day every day.

 

Not saying that there aren't good garages out there, I know quite a few guys that I recommend to people all the time if I don't have time to help...but when it comes to something very in depth, the dealership is where you should be heading.

 

Everyone gives them such a bad rep....the cheapest place I could get tires was the dealership...and they did a crank relearn for me for free.

 

To each his own. The last time I was at the dealership who since closed, not because they lacked business, I think they saw the GM writing on the wall, closing dealerships against the owners wishes, they tried to get me to pay $700.00 for replacing front diff seals. My INDEPENDENT mechanic in business for 30+ years did the job with oem seals for $170.00. Choose for yourself!

 

Replacing seals is a basic job...any Joe can do that. I'm talking about when they have to chase a very complex problem. Of course routine maintenance is going to be more at the dealership...they go by a shop book to charge time. If the book says 7 hrs than you get charged 7 hrs...they're not the only shop that does this either.....than there's the chain garages that force the mechanics to sell parts for commission...

 

 

In the end, the seals in your front diff are less than 40 bucks...and if you knew how to do it yourself you would have saved 130 bucks more.

jhm Senior Enthusiast

jhm

Posted
Posted
Anyone who goes to A Garage for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Fixed.

nothing wrong with the dealerships...9 chances out of 10 they save you money as they have access to much better more advanced diagnostic equipment that would bankrupt the ma and pa garages out there...also they know how to use the stuff. Not only that, they have access to TSB's and work on your type of vehicle all day every day.

 

Not saying that there aren't good garages out there, I know quite a few guys that I recommend to people all the time if I don't have time to help...but when it comes to something very in depth, the dealership is where you should be heading.

 

Everyone gives them such a bad rep....the cheapest place I could get tires was the dealership...and they did a crank relearn for me for free.

 

To each his own. The last time I was at the dealership who since closed, not because they lacked business, I think they saw the GM writing on the wall, closing dealerships against the owners wishes, they tried to get me to pay $700.00 for replacing front diff seals. My INDEPENDENT mechanic in business for 30+ years did the job with oem seals for $170.00. Choose for yourself!

 

Replacing seals is a basic job...any Joe can do that. I'm talking about when they have to chase a very complex problem. Of course routine maintenance is going to be more at the dealership...they go by a shop book to charge time. If the book says 7 hrs than you get charged 7 hrs...they're not the only shop that does this either.....than there's the chain garages that force the mechanics to sell parts for commission...

 

 

In the end, the seals in your front diff are less than 40 bucks...and if you knew how to do it yourself you would have saved 130 bucks more.

 

Any good mechanic can do anything the dealer can. The guy I have done business with for the past 15 years has techs who work on all brands and all problems. I have referred many people to him, many with very complex issues and they in turn refer their freinds. Nobody ever has a complaint. Can't say that about the dealer. As far as replacing the seals, I know how to do it I have been working on my own stuff for over 35 years, at this point I have no time in my schedule for things like that, my career takes precedence. I also worked at a independent garage when I got out of school over 30 years ago and we charged according to "the book" it is a total money maker. I remember feeling guilty for charging a guy 2 or 3 hours labor plus parts for replacing a thermostat when it took me 30 minutes. Owner made big money wrench turners made squat. Go to your dealer, you must like spending $$$.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted
Anyone who goes to A Garage for repairs other than warranty work is just asking to get taken. Good, you sound like you found a good independent garage, I have one too. I can't even think of going to a dealer, not that there are many around here anymore, nearest chevy dealer is about 30 miles away! The place I bought from went out!

Fixed.

nothing wrong with the dealerships...9 chances out of 10 they save you money as they have access to much better more advanced diagnostic equipment that would bankrupt the ma and pa garages out there...also they know how to use the stuff. Not only that, they have access to TSB's and work on your type of vehicle all day every day.

 

Not saying that there aren't good garages out there, I know quite a few guys that I recommend to people all the time if I don't have time to help...but when it comes to something very in depth, the dealership is where you should be heading.

 

Everyone gives them such a bad rep....the cheapest place I could get tires was the dealership...and they did a crank relearn for me for free.

 

To each his own. The last time I was at the dealership who since closed, not because they lacked business, I think they saw the GM writing on the wall, closing dealerships against the owners wishes, they tried to get me to pay $700.00 for replacing front diff seals. My INDEPENDENT mechanic in business for 30+ years did the job with oem seals for $170.00. Choose for yourself!

 

Replacing seals is a basic job...any Joe can do that. I'm talking about when they have to chase a very complex problem. Of course routine maintenance is going to be more at the dealership...they go by a shop book to charge time. If the book says 7 hrs than you get charged 7 hrs...they're not the only shop that does this either.....than there's the chain garages that force the mechanics to sell parts for commission...

 

 

In the end, the seals in your front diff are less than 40 bucks...and if you knew how to do it yourself you would have saved 130 bucks more.

 

Any good mechanic can do anything the dealer can. The guy I have done business with for the past 15 years has techs who work on all brands and all problems. I have referred many people to him, many with very complex issues and they in turn refer their freinds. Nobody ever has a complaint. Can't say that about the dealer. As far as replacing the seals, I know how to do it I have been working on my own stuff for over 35 years, at this point I have no time in my schedule for things like that, my career takes precedence. I also worked at a independent garage when I got out of school over 30 years ago and we charged according to "the book" it is a total money maker. I remember feeling guilty for charging a guy 2 or 3 hours labor plus parts for replacing a thermostat when it took me 30 minutes. Owner made big money wrench turners made squat. Go to your dealer, you must like spending $$$.

 

I fix my own shit...have for 17 years now....but If I had a complex issue that I could not trouble shoot..and it would be pretty complex, I would want someone working on it that does it all the time for a living as opposed to a "jack of all traded" guy that works on every make and model out there. The dealership has probably seen the same issue a few times before, and instead of standing around head scratching for a day or two when all basic troubleshooting paths have failed, the mechanics at the dealership that seen the same issue a few times would know where to start. This way it would likely save money.

And as for the feeling guilty, why would you...if next time you had a guy come in for a thermostat and something got screwed up, like the wrong part came to you, or you broke a bolt taking things apart, or whatever else...and it ended up taking you 3.5 hrs to get everything right...do you think the customer would feel guilty...Its a totally fair way of charging people for a service. And if I have an issue anytime in the future I cant fix, again it would be something really big, if paying 20-30% more to get it done means its done right and fast, that's a price I am glad to pay. I've seen cars at a local garage, and its a really good one, sit there for days due to a complex issue. The mechanic still has to live, and the bread and butter is parts replacement. He's gonna do an hour or two job and make a hundred bones before he spends all day trying to troubleshoot a car. The guy that needs new brakes is gonna make him money now...not a week down the road when the car he spent the last week fixing is done. The dealership guys will spend the whole day on a car as they get paid anyway.

 

Too each they're own though....I'm just saying that the dealership gets a bad rep...the guys know what they're doing and do it very very well, its not they're fault that Mitchel's exists.

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