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07-05-2015, 12:48 PM
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#1 |
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laying low
 
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,513
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09 Yukon
I am looking at an 09 GMC Yukon 4wd for the wife. It has good options. It has listed "shiftable automatic" trans. I see it has a + and - on the shift lever.
What trans is this and what does this on the shifter do? Any quirks to be aware of with the 09's? Hp? MPG? What denotes that 4 to 8 cylinder derate deal? The dealers don't always list every option on the window sheets of used vehicles and sometimes they are wrong in their ads too.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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07-05-2015, 07:00 PM
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#2 |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: 09 Yukon
6L80E 6 speed. You can put the Shifter in "M" & Tap shift the Trans.
Got the 8th digit of the VIN? |
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07-05-2015, 10:02 PM
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#3 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,513
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Re: 09 Yukon
No sorry I don't have the vin. I am pleased to see it doesn't have that electronic control rear suspension thing though.
I also stopped to look at a Tahoe and as soon as I saw it had that option I turned around and left.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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07-06-2015, 12:07 PM
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#4 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,513
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Re: 09 Yukon
The 8th digit of the vin is 0.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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07-06-2015, 04:02 PM
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#5 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,187
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Re: 09 Yukon
That decodes to RPO LMG.
5.3, flex fuel, iron block, cylinder deactivation. That should answer your question about 8 cyl to 4 cyl. Some have oil consumption issues. Some people will get a tune to keep it from going to 4 cyl mode. |
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07-06-2015, 07:03 PM
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#6 |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: 09 Yukon
You can put it in "M" And Tap Shift up to 5th, This will lock out 6th gear & Keep the engine from dropping cylinders.
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07-06-2015, 09:53 PM
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#7 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,513
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Re: 09 Yukon
Yeah, I was afraid of that. It looks like we're going to get more serious about it. It's a real nice Yukon.
I'm afraid to ask but. Do these trans hold up well?
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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