I have a '07 3500HD. A co-worker has a '07 1500. Another co-worker has a GMC 1500.
I checked the rear end on mine this week and found it to be a quart low on gear oil. Co-workers decided to check theirs and theirs were over a 1/2 qt low. We all bought our trucks brand new. No leaks, no service work on rear ends. They must have come from the factory with under-filled rear ends.
I called the dealer to get the scoop on how much to fill. They said up to the fill hole. I would recommend all GM truck owners check their differential oil levels. Note - the spec is 75-90 wt SYNTHETIC. Just thought you might want to check.
GM P/U Rear End WARNING!!!
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rlhedlund
Re: GM P/U Rear End WARNING!!!
This leads me to a question...Who is supposed to check the differential? The factory or the dealer?
Out of four new GM trucks, only one had a full rear differential. Four different dealers.
Out of four new GM trucks, only one had a full rear differential. Four different dealers.
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Mike Clay
- Council, Administrator
- Posts: 13254
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- Skype ID: Mike-Clay
- Location: Oregon Gresham
Re: GM P/U Rear End WARNING!!!
My dealer checks mine every time i go in for an oil change.
Mike, Susanna & Rudy
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
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Future Fulltimers
- Posts: 847
- Joined: Thu Mar 16, 2006 5:35 pm
- Location: Tennessee McMinnville
- Cardinal Owners: 2006 30TS
- Location: Tennessee Eastern (Deceased)
Re: GM P/U Rear End WARNING!!!
When you purchase a new vehicle the "Dealer Prep" charge is for checking ALL fluids, road testing, washing & detailing the vehicle. Most dealers only wash the vehicle before it is delivered. I checked mine (after reading a simular post on the Chevy owner's web site) and found it to be low. I contacted the dealer (where I purchased it) and they assured me that the dealership checked and filled it to the recommended level. I removed the fluid and found there to be 3/4 of a quart. 
To make a long story short, the dealership ended up giving me a free oil change. Towing what we tow, I check the fluid at every oil change and change it when I change the transmission fluid.
To make a long story short, the dealership ended up giving me a free oil change. Towing what we tow, I check the fluid at every oil change and change it when I change the transmission fluid.Wayne & Peggy Williamson
Rocky
GoodSam Lifetime Members
2006 30TS
2007 Silverado 3500 Classic 6.6L D'Max
AirSafe 25k hitch
Rocky
GoodSam Lifetime Members
2006 30TS
2007 Silverado 3500 Classic 6.6L D'Max
AirSafe 25k hitch
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bigbunkhouse
- Posts: 1105
- Joined: Sun Feb 17, 2008 6:40 pm
- Location: Massachusetts North Reading
- Cardinal Owners: 2007 362BHS
- Location: Massachusetts North Reading
Re: GM P/U Rear End WARNING!!!
Mike Clay wrote:My dealer checks mine every time i go in for an oil change.
ur a trusting sole, unless I see it I don't believe it!
2007 362bhs Cardinal (The mobile vacation home)
99 f350 4dr dually v-10 Lb 2wd 4.30 locker (Big Dually)
Dogs: Elvis and Priscilla
Me (Matt), Wifey (Jana), (Julia)14 year old daughter and ***SHYANNE*** born 8/12/10
99 f350 4dr dually v-10 Lb 2wd 4.30 locker (Big Dually)
Dogs: Elvis and Priscilla
Me (Matt), Wifey (Jana), (Julia)14 year old daughter and ***SHYANNE*** born 8/12/10
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Mike Clay
- Council, Administrator
- Posts: 13254
- Joined: Mon Mar 13, 2006 8:53 am
- Location: Oregon Gresham
- Cardinal Owners: 2016 3850RL Estate
- Skype ID: Mike-Clay
- Location: Oregon Gresham
Re: GM P/U Rear End WARNING!!!
Well im not real trusting I watch everything they do drives them nuts.bigbunkhouse wrote:Mike Clay wrote:My dealer checks mine every time i go in for an oil change.
ur a trusting sole, unless I see it I don't believe it!
Mike, Susanna & Rudy
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
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bigbunkhouse
- Posts: 1105
- Joined: Sun Feb 17, 2008 6:40 pm
- Location: Massachusetts North Reading
- Cardinal Owners: 2007 362BHS
- Location: Massachusetts North Reading
Re: GM P/U Rear End WARNING!!!
Mike Clay wrote:Well im not real trusting I watch everything they do drives them nuts.bigbunkhouse wrote:Mike Clay wrote:My dealer checks mine every time i go in for an oil change.
ur a trusting sole, unless I see it I don't believe it!
I think that will be me when and if i ever stop maintaining my own stuff, I know somebody who films all maintainance!
2007 362bhs Cardinal (The mobile vacation home)
99 f350 4dr dually v-10 Lb 2wd 4.30 locker (Big Dually)
Dogs: Elvis and Priscilla
Me (Matt), Wifey (Jana), (Julia)14 year old daughter and ***SHYANNE*** born 8/12/10
99 f350 4dr dually v-10 Lb 2wd 4.30 locker (Big Dually)
Dogs: Elvis and Priscilla
Me (Matt), Wifey (Jana), (Julia)14 year old daughter and ***SHYANNE*** born 8/12/10
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snoking
Re: GM P/U Rear End WARNING!!!
You are not allowed in the service area for insurance reasons!!!!
Please stay behind the yellow line!
There is a risk that you will see what our tech's do or do not do!
Chris
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Chief409
- Posts: 3945
- Joined: Sun May 20, 2007 8:21 pm
- Location: California Rosamond
Mojave Desert - Cardinal Owners: 2007 30WBLE
- Location: California Rosamond
Re: GM P/U Rear End WARNING!!!
I always check under the hood after any service, once I found a 2 foot long straight slot screwdriver on top of the radiator which I promptly returned to the Service Desk. Then I had them double check ALL the work done. This was when we lived in NoCal, at a Mega Dealership. Another NoCal Mega Dealership replaced the carburetor when the Bronco needed a new ignition module. Out big bucks for the carb, plus a week for a rental car so I could get to work. I got the module at NAPA for $50 and fixed the problem myself when I got the Bronco home. First I had to GET home over the Sunol grade in rush hour though! 
Down here I deal with a small family owned Ford dealer and they take excellent care of all my vehicles.
Down here I deal with a small family owned Ford dealer and they take excellent care of all my vehicles.
Jeff & Terry
U.S.N. Ret
2012 F350 Lariat FX4 6.7 Diesel Dually, Crew Cab, LWB, 50 gal Transfer Flow toolbox/tank
2007 Cardinal 30WBLE, "the 'Bird", ONAN gen.
The more I see in my travels, the more I realize there is so much more to see.
U.S.N. Ret
2012 F350 Lariat FX4 6.7 Diesel Dually, Crew Cab, LWB, 50 gal Transfer Flow toolbox/tank
2007 Cardinal 30WBLE, "the 'Bird", ONAN gen.
The more I see in my travels, the more I realize there is so much more to see.
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Mike Clay
- Council, Administrator
- Posts: 13254
- Joined: Mon Mar 13, 2006 8:53 am
- Location: Oregon Gresham
- Cardinal Owners: 2016 3850RL Estate
- Skype ID: Mike-Clay
- Location: Oregon Gresham
Re: GM P/U Rear End WARNING!!!
Same here this family owns a ff ffff ford dealership and a chevy one side by side in a little town.
Mike, Susanna & Rudy
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
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gmarker
- Posts: 367
- Joined: Tue Jun 12, 2007 11:11 am
- Location: Texas Cedar Park
- Cardinal Owners: 2005 29WBLE
- Location: Texas Cedar Park
Re: GM P/U Rear End WARNING!!!
Keep trying , Mike. The more you say it, the easier it gets. 
GERRY & KAY
2005 29WBLE
20011 FORD F250 LARIOT 6.7 POWERSTROKE
MAX the WONDERCAT
2005 29WBLE
20011 FORD F250 LARIOT 6.7 POWERSTROKE
MAX the WONDERCAT
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Chief409
- Posts: 3945
- Joined: Sun May 20, 2007 8:21 pm
- Location: California Rosamond
Mojave Desert - Cardinal Owners: 2007 30WBLE
- Location: California Rosamond
Re: GM P/U Rear End WARNING!!!
So'Kay Mike. Once upon a time, a long time ago, I built and raced BBBIG BBBLOCK ccchevys! There I said it!Mike Clay wrote:Same here this family owns a ff ffff ford dealership and a chevy one side by side in a little town.
Jeff & Terry
U.S.N. Ret
2012 F350 Lariat FX4 6.7 Diesel Dually, Crew Cab, LWB, 50 gal Transfer Flow toolbox/tank
2007 Cardinal 30WBLE, "the 'Bird", ONAN gen.
The more I see in my travels, the more I realize there is so much more to see.
U.S.N. Ret
2012 F350 Lariat FX4 6.7 Diesel Dually, Crew Cab, LWB, 50 gal Transfer Flow toolbox/tank
2007 Cardinal 30WBLE, "the 'Bird", ONAN gen.
The more I see in my travels, the more I realize there is so much more to see.
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Rob & Cathy
Re: GM P/U Rear End WARNING!!!
Would that be in Sandy?Mike Clay wrote:Same here this family owns a ff ffff ford dealership and a chevy one side by side in a little town.
Rob
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Mike Clay
- Council, Administrator
- Posts: 13254
- Joined: Mon Mar 13, 2006 8:53 am
- Location: Oregon Gresham
- Cardinal Owners: 2016 3850RL Estate
- Skype ID: Mike-Clay
- Location: Oregon Gresham
Re: GM P/U Rear End WARNING!!!
Yes it wouldRob & Cathy wrote:Would that be in Sandy?Mike Clay wrote:Same here this family owns a ff ffff ford dealership and a chevy one side by side in a little town.
Rob
Mike, Susanna & Rudy
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
2016 3850RL Estate "Proto Grigio"
2019 Silverado 3500HD Dually D/A 4x4 LTZ
My dreams are too big for my wallet
Rallies attended - 32
Nights camping in 2013:159 2014:269 2015:Full Timers
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Rob & Cathy
Re: GM P/U Rear End WARNING!!!
Thought so, I did some work at both dealerships about 7 years ago.Mike Clay wrote:Yes it wouldRob & Cathy wrote:Would that be in Sandy?Mike Clay wrote:Same here this family owns a ff ffff ford dealership and a chevy one side by side in a little town.
Rob
Rob