2007 GMC Yukon XL 2500

[Nap73]

Do the tow mirrors that are on it power fold or are they manual?

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

They power adjust and are heated but manually fold. Guys sending me the original mirrors.To be honest I’ll probably put those back on. The tow mirrors are huge.


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[Nap73]

What’s Normal trans temp on the highway? Today on about a 30 min drive the trans temp got to 205. Was doing 60 - 70 mph. It was 94 degrees out so that must have affected it to. Was just wondering what normal operating temps are.


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[gooffeyguy]

My Denali runs between 150-170 on the highway in 90* heat

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[Nap73]

My Denali runs between 150-170 on the highway in 90* heat

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Why’s mine running so high then?

Trans fluid is good - pink with no burnt smell.


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[swathdiver]

Why’s mine running so high then?

Trans fluid is good - pink with no burnt smell.

Mine runs much cooler too. However, Tom and I have 6-speed transmissions on the 1500 chassis and we have electric fans, not an engine driven clutch fan.

There are a couple of guys on here with 2007 2500s, anyone remember names offhand so we can call them in?

 

[gooffeyguy]

Does it have an external trans cooler (in front of radiator)?

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[gooffeyguy]

Mine runs much cooler too. However, Tom and I have 6-speed transmissions on the 1500 chassis and we have electric fans, not an engine driven clutch fan.

There are a couple of guys on here with 2007 2500s, anyone remember names offhand so we can call them in?

Good point. I think the 2007 2500's have a different tranny?

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[swathdiver]

Good point. I think the 2007 2500's have a different tranny?

Yep, 4L80E (MT1)

 

[avalonandl]

Are these numbers correct....?
I know the 2001-2006 w/8.1L were rated up to 14k....and the limiting factor on the 2007-2013 was the hitch rating..... plus no more big block after ‘06....

The max towing was 12,000 lbs with the 8.1..... I know I had one -see my avatar. 2500 AV...

Loved it. The 4speed trans was the issue.....

 

[Nap73]

What your opinion on the tow mirrors?

I’ll get the original mirrors in a few days. Was thinking about putting them back on.




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