general dmax questions

mannytranny402 · September 6, 2002

Hello

I picked up the last 2002 crew cab dmax with the 6 speed manual and 4x4, in the US last week. Anyway, I have a few questions about it.

1. I have the ZF and when I am in first and or reverse, it makes a clunking sound when I let out the clutch. It is annoying, and I am wanting to know if it is a problem.

2. It is a sle and it does not have the automatic air cond. When I push the recycle button, somethimes it turns the A/C on, and sometimes it doesnt. Can I have the recycle on without the air?

3. I have heard that when you are done driving it, you are supposed to let it idle for a while, in order to get the turbo to slow down/stop, before you shut it down. Is this true?

Thanks for the help...

kengsxr · September 6, 2002

as far as the turbo goes, it will help lengthen the life of the turbo if you let it idle for a little while (30-60 seconds) to allow the hot oil in the turbo to flow out and equalize temp.

jelisfc · September 6, 2002

So where was the last Dmax/ZF??? I wanted one too but the only one I found was in Colorado Springs CO and they said it had light hail damage and they wouldn't give me a good enough deal to fly from Minnnesota to get it.

mannytranny402 · September 7, 2002

Thanks

I had to go to colorado to get it, but they told me that it came from ohio. this was two weeks ago exactly. About an hour north of denver in a town called greeley. no hail damage either.

bluenote · September 7, 2002

Congratulations on your new ride!! Check out the forums at

The Diesel Page for tons more information on your truck.

To add a little more to the answers for your questions...

1. Couldn't begin to help ya there, I have the Allison.

2. I believe the 2002's were like the 2001's in that if you select recirculate with the dash vents on, the air will ALWAYS be on. I know on mine (2001), I can get the A/C light to turn off with recirc selected, but the air still runs.

3. Ditto on what's already been stated, a short idle period helps bring your turbo temps down. This will help both your turbo and oil life. This really isn't an issue when driving unloaded, unless you're really hammering on it, but is definitely a good idea after towing/hauling.

Enjoy your new beast, these really are a blast to drive. :thumb:

Colorado Kid · September 9, 2002

Congrats!

I live between Greeley and Denver, my wife, my mom and my grandma are all from Greeley! I hope the guys at Weld County Garage treated you OK...they weren't into making good deals when I was buying, but other than that I don't have anything bad to say about them. I buy some of my parts there for both my trucks, and they're the only dealer that has ever worked on the '91.

1) Mine doesn't clunck. Sometimes if it's lugging in first, second or reverse and I jump on the clutch it will kind of go clack, clack, clack as the tension comes out of the drivetrain...I think it's just the backlash in the differential. Mine doesn't have a transfer case, so the clunking could be in there, or may be a problem.

2) If you turn the A/C off by pushing the button, then turn the fan off, then push recirculate it will close the air intake without turning on the A/C, and no air will come out of anywhere. If the fan is on when you push recirc the A/C will come on. ??? If you then turn the fan off the lights will go out, but the A/C and the fan will stay on. If you push the recirc button again at this point the fan and A/C will turn off and outside air will come through the vents. I don't even pretend to know why it works this way, but there it is.

3) Generally whatever low speed manuvering is necessary to get where you plan to shut the engine off is sufficient cooldown for our well oiled liquid cooled turbo bearings. If you're being pulled over for running 97 MPH while towing it would be good to let it idle for a minute before shutting down, unless ordered to do otherwise by a peace officer!

mannytranny402 · September 9, 2002

So, Colorado kid, you live in brighton? I have a bunch of relatives back there. My dad grew up in Greeley. Yea, the guys at weld county garage were good, but in not sure that i got too good of a deal. i suppose it was ok. That is one wierd A/C setup. I have no idea of who thought that one up. I really like the truck, but it is hard to drive in parking lots. That is my only complaint. Other than that, it is great. Thanks for the help...

seatec · September 11, 2002

How hard would it be to replace my (manual) ac controls for thew automatic controls i had and miss in my 2001 Yukon?

IS it just a matter of buying the unit and installing it and the temp sensor in the headline?

WeldCountyGMC · December 27, 2007

So, Colorado kid, you live in brighton? I have a bunch of relatives back there. My dad grew up in Greeley. Yea, the guys at weld county garage were good, but in not sure that i got too good of a deal. i suppose it was ok. That is one wierd A/C setup. I have no idea of who thought that one up. I really like the truck, but it is hard to drive in parking lots. That is my only complaint. Other than that, it is great. Thanks for the help...

MannyTranny402,

I know your purchase was a while ago, but we want to thank you for your business!

I wasn't directly involved with your purchase, but I want to be sure you know that when we trade with another dealer to bring in a vehicle for a customer we can't do quite as good of a deal as if it was originally in our inventory. This is because GM forces all dealers to pay a little more to the dealer we are trading with than we would have to if it was ordered into our inventory. I'm sure you got the best deal we could offer without it being in our inventory.

We continue to sell more and more GMC's with every year, so we are definitely still offering great deals. Drop by and see us sometime when you get the opportunity!