2007 GMC Denali

[Woodblocker55]

Can some one give a run down on how reliable the 6.2 L 6 speed was in a stock 2007 GMC Denali was it good high mileage engine and transmission.
Was it as good as the 2006 GMC Yukon 5.3 L .. Did they have tranny issues ? With first 6 speeds ? And what's first year of the 6.2 L.

 

[Doubeleive]

Can some one give a run down on how reliable the 6.2 L 6 speed was in a stock 2007 GMC Denali was it good high mileage engine and transmission.
Was it as good as the 2006 GMC Yukon 5.3 L .. Did they have tranny issues ? With first 6 speeds ? And what's first year of the 6.2 L.

tons of info on this site already, probably no need for "another" thread
here is a good place to start reading should keep you busy for several weeks

What did you do to your NNBS GMT900 Tahoe/Yukon Today?

I dedicated a lot of time to some mods on my Tahoe this weekend. I replaced my low beam halogen lights with one of HID Guy's kits, plasti dipped my chrome surround on my grille, tried to repaint my front bowtie (FAIL!), replaced my interior lights with LEDs, installed my holster under my...

www.tahoeyukonforum.com

 

[t_bergman]

2007 was the very first year for the 6.2 and the GMT900; in my opinion I'd always skip the first year and possibly second year of the generations. GM is very good at getting things right during the last few years but the new ones are a bit hit and miss. It could have the 4L60e or the 6L80, we'd need the VIN to verify.

 

[NardDog]

This is the second reply post I’ve seen where a supporting member squashes the OP question. The only reason we have posts to go back and reread is because people post questions and other try and answer them. There’s really no such thing as a new question. So should we all just reread old posts? I would guess majority of this forum memebers are here because they had a question about something and was looking for help.
It reminds me of the saying we have all heard, if you dont have anything nice to say dont say anything at all.

Why not let the forum be a forum, why are we trying to squash questions. If no one wants to answer OP question then thats happens but we shouldn’t shut them down because its an easy question.

There im off my soapbox and its not personal doublebeliev.

 

[Woodblocker55]

2007 was the very first year for the 6.2 and the GMT900; in my opinion I'd always skip the first year and possibly second year of the generations. GM is very good at getting things right during the last few years but the new ones are a bit hit and miss. It could have the 4L60e or the 6L80, we'd need the VIN to verify.

I got picture of the RPOs and going to see whats under the hood . Witch tranny was better 6L80 I bet. 6.2 L were hard to find in our area . Yes I like the last runs also $$$$ This ones in great shape . It's hard to pass up.

 

[t_bergman]

I got picture of the RPOs and going to see whats under the hood . Witch tranny was better 6L80 I bet. 6.2 L were hard to find in our area . Yes I like the last runs also $$$$ This ones in great shape . It's hard to pass up.

Someone with experience with both transmissions will need to comment, I've been in 2500 land since my 01. The 6.2L in the 07 had the capability but did not have AFM activated in the tune, however the L92 is a high compression engine and requires high octane fuel and oil changes count a little bit more than the 5.3L.

The transmission will be a bit more cared for if the Denali has AWD, can't remember if that year had the option for a two speed transfer case. This is because the transmission is more controlled by the computer than the human.

There is a reason why the 2006's are commanding a price, they're bulletproof.

 

[Woodblocker55]

2007 was the very first year for the 6.2 and the GMT900; in my opinion I'd always skip the first year and possibly second year of the generations. GM is very good at getting things right during the last few years but the new ones are a bit hit and miss. It could have the 4L60e or the 6L80, we'd need the VIN to verify.

MYC 6L80E on the L92 engine . Was it a good engine and tranny ?

 

[CaptainAmerica1]

I believe the only issue known with that engine trans combo is weak torque converter.

 

[Doubeleive]

This is the second reply post I’ve seen where a supporting member squashes the OP question. The only reason we have posts to go back and reread is because people post questions and other try and answer them. There’s really no such thing as a new question. So should we all just reread old posts? I would guess majority of this forum memebers are here because they had a question about something and was looking for help.
It reminds me of the saying we have all heard, if you dont have anything nice to say dont say anything at all.

Why not let the forum be a forum, why are we trying to squash questions. If no one wants to answer OP question then thats happens but we shouldn’t shut them down because its an easy question.

There im off my soapbox and its not personal doublebeliev.

I can probably find hundreds of post's giving this info with a simple "search" that's all, it's been baked, rehashed, redone, grilled over and over.
yes the 6.2l was introduced to the suv's in 2007 as well as the 6l80
the 2007 engine has no dod parts, presumably it's a decent engine
the 6l80 is prone to torque converter issue's, that has not changed ever
the dash's crack that's a given.
maybe i'm just being a grump
if I was going to buy a cheaper older gmt900 with engine durability in mind I would probably shop 07-09
buying anything with 160k or more on it is scary without documented service history, because that is when the proverbial s*hit hit's the fan

 

[Doubeleive]

MYC 6L80E on the L92 engine . Was it a good engine and tranny ?

the torque converter is the weak spot, that's unavoidable even if you bought a 2007, 2014 or even a 2020