2005 2500HD

[mbrule]

Hoping the TBN brain trust can help with a question.

I am looking at an '05 Chevy 2500HD with the Duramax. I am pretty sure that the Duramax could only be had with the Alison Automatic (5 speed I think) or a stick. The truck is listed a 4 speed auto and the indicator on the dash shows D,3,2,1. I am waiting for a reply from the seller, but thought I would check to see if anyone knows.

Also does anybody have thoughts, experiences or opinions on '05 Chevys with the Duramax?

Thanks!

Matt

 

[deerefan]

Hoping the TBN brain trust can help with a question.

I am looking at an '05 Chevy 2500HD with the Duramax. I am pretty sure that the Duramax could only be had with the Alison Automatic (5 speed I think) or a stick. The truck is listed a 4 speed auto and the indicator on the dash shows D,3,2,1. I am waiting for a reply from the seller, but thought I would check to see if anyone knows.

Also does anybody have thoughts, experiences or opinions on '05 Chevys with the Duramax?

Thanks!

Matt

It should be an allison, 5 spd. 1,2,3,D and o/d.

 

[mbrule]

It only shows D,3,2,1, is the O/D and electric switch or ?

 

[WM75Guy]

OD is automatic. There is an OD disable that prevents the tranny from going from 4-5. It is the same button as tow/haul mode. Short push is tow/haul, long push is OD disable. My 03 is the 5 speed, my 08 is the 6 speed. The 03 gets better fuel milage.

 

[mbrule]

OD is automatic. There is an OD disable that prevents the tranny from going from 4-5. It is the same button as tow/haul mode. Short push is tow/haul, long push is OD disable. My 03 is the 5 speed, my 08 is the 6 speed. The 03 gets better fuel milage.

Does the dash indicator in the '03 look like the one i posted above?

The 5 speed '03 actually gets better mileage than the 6 speed '08? Wow!

 

[tungularafishcamp]

My O5 duramax dash is the same and is a 5 speed allison.I was told when I ordered it that the standard wasn't available for the dmax anymore. I put a banks chip, intake and exhaust on it and get 24 hiway when empty. Got 11 coming up the Alcan with a 25k lb load. Has been a good truck!
Rick
On mine the o/d off/on is there with the the tow/haul mode

 

[deerefan]

Does the dash indicator in the '03 look like the one i posted above?

The 5 speed '03 actually gets better mileage than the 6 speed '08? Wow!

It probably has to do with the new emissions requirements. I believe the 6spd is geared a little lower too.

 

[George2615]

Agree it should be a 5 spd.
I had an 05 Dmax/ Allison and miss it. With the larger exhaust system and programmer I was getting 20-21 MPG empty and 14-15 towing 7K. On the newer ones they added a DPF which cuts into mileage. Now they are using urea systems but don't know how MPG are.
The 08 1/2T gas I have now is lucky to get 16.5 empty. Should have kept the 05.

 

[mbrule]

Thanks for all the help guys. As usual TBN answers my question!!

Still interested in opinions on these trucks. I think the injector problems from the earlier D-Max were fixed by '05 weren't they?

Matt

 

[YesDeere]

You guys are getting way better mileage than me. 04 dmax with Allison. Banks tuner and zaust. I'm just at 14 mpg. But I run the piss out of it. 120000 and not a blip

I've towed anything I wanted with it no problem. And I love the interior. Dash is closer to a corvette than a cavalier. Leather guts are a plus in my book.