Yes, I once replaced an mode door actuator on a Chrysler 300. The blend door actuator looked identical but they were not interchangeable.
They use the same actuator for blend door, mode door and recirc door. As a blend or mode door actuator, the same 5 pins are used, for recirc, only three pins are used.
I tried to calibrate it today with the older actuator installed and it failed. I am beginning to think the issue may be in the control panel. I looked up the schematic in a Haynes manual but that is useless because there is no way the system would work they way they show the wiring. The show 12V from ignition on on one side of the motor and ground on the other side. That would make the motor turn in one direction only and all the time the ignition switch is on, which is pretty much what it is doing right now.
just want to say, sorry you are going through this. I know how aggravating it can be. you probably know this but, I think I remember reading that the actuator should be on the middle indent when installing and before calibrating. best of luck and I hope you figure it out.
It was on the middle indent today, but that is not supposed to matter.
No experience with this problem, but Iāve heard it said that āhoming the actuatorsā on GM products is best done using a GM specific scan tool. In other words, this may easier to accomplish w/ a brief visit to a GM dealership.
So you are saying all of the actuators will have the same part numbers if you look up the oem parts? From what Iām seeing on Amazon (non oem) the 2 blend actuators and the fresh air/recirculate actuator are interchangeable. Then thereās a different actuator for mode. Might explain the different shaft size, but Iām not certain. Look at the item description and the description of the other actuator in the āitems frequently bought togetherā to see what Iām talking about.
I doubt you need a control unit, but if you do, Iād skip the Dorman and take my chances with a part pulled off of a donor truck at a salvage yard. Been there, done that. I think the oem part is discontinued. Lifetime guarantee on the Dorman, so I guess I could take the one I bought back, get a new one, and mail it to you! Iāve got no use for it, sits on a shelf in my shop. Found an oem unit off a scrap truck in great shape and it works much better. Doesnāt require a reset every few weeks like the Dorman did.
I looked at the reviews on this Amazon part. It appears that all the 5 star reviews (I didnāt read all of them) were made right after installing the part. The one and two star reviews were made a few months after installing and the part worked for a little while, then failed. The non OEM part I put in last summer failed sometime this winter.
I got mine from RockAuto and it was a non OEM part, but from a manufacturer that I have trusted in the past. Many of the non-OEM parts show they are universal.
I think I will try the 1972971 part even though it says not for RPO code D07, which I have. Since that note is attached to the air inlet, it may not apply to the blend door. Some of the air inlet actuators come with a large piece attached to them. Anyway, for blend door, they look the same.
I did notice on the non OEM that the variable resistor is on an intermediate gear, and the OEM mode actuator I got is the same where the OEM blend door was on the output gear. I wish I hadnāt thrown the original away. The one on the output gear is an open component with the resistor part attached to the gear and the wipers attached to the case. It probably just needed cleaning.
As far as the shaft receiver not fitting, It should fit as you canāt see any difference in the size. It is round with two opposing flats. The flats fit but it rocks on the widest part where it is just slightly too small. A little filing will make it fit. Iāll try that first.
I think that is probably going to be a mistake.
Look, donāt take this the wrong way. I think you are a smart guy, but I think youāre overthinking this a little. And I donāt see why you feel the need to out-think the manufacturer. If you need a blend door actuator, order a blend door actuator. Why order a mode door actuator instead, even if they are all the same? Why power up the actuator before installing it if the manufacturer specifies not to? Why order an actuator that the manufacturer says is not for your vehicle? I guarantee that you know more about electronics and the internal workings of these little actuators than I do. But Iām pretty sure youāre shooting yourself in the foot and extending this project by not just ordering the manufacturer recommended part and installing it like the manufacturer recommends.
It looks like none of the AC Delco actuators at RockAuto are for my truck. I have the CJ3 and D07 RPO codes. I went to Napa online, they have 3 non OEM actuators, one for automatic controls (CJ2), one for manual controls (CJ3) but neither mention D07. The third one will fit either CJ2 or CJ3 but not D07. Confusing eh?
I went to AutoZone online and there were a lot of options. I did not go through all of them, but about the third AC Delco I looked at specified my truck with CJ3 and D07, so I ordered it. It will be here Monday, not available in store.
It is. I wonder if it wouldnāt be simpler for your truck to order parts for a 2006 (basically what an 07 āclassicā is anyway). Good luck. What is D07, by the way?
D07 is the ācustom floor consoleā. I donāt remember seeing any Silveradoās of this generation without a center console. Anyway, when you open the glove box, there is a placard that lists all the RPO codes. The RPO is what identifies what parts were put in at the factory. I forgot what the R means but PO is production order. The R may mean regular as vehicles that are special order have CPOās (custom production order) instead of RPOās.
If you order by RPO, you pretty much canāt go wrong.
BTW, I didnāt look at the 2006 this time but I have done that in the past, especially at RockAuto.
Edit: I just went back to RockAuto and looked up for the 2006 model. Under the PN 1972971 for 2006, it does not mention except for D07 like it does for the 2007 Classic.
Back in the hunt again, Autozone cancelled the order because they canāt fill it.
Edit: just submitted an order to OāReillyās.
A little off topic:
Seems like whenever I google for an item, regardless of what it is, two sources pop up, Walmart and Target. I know there is no way either of them have it, itās just their programming that collects everything. Used to be Sears too, and now sometimes Home Depot. I like to check local stock on hand if possible.
A couple years ago I ordered a small engine part from my fav on line supplier. I placed the order because it said āin stockā. Next notice was that it was ordered from the mfg. I canceled the order and placed it with the mfg. instead. They got upset because they said they just got the part in and I said I wouldnāt have ordered it from you if you didnāt say it was in stock.
I tend to rely on their computer inventory information. Some are better than others and some are purely fictitious.
edit: Never mind, Iāll shut up. Back to the problem. Somewhere up there someone mentioned that it might be necessary for the dealer to use their computer to calibrate it??
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Not required. Trust me.
Been really disappointed in google, so many things turn up that are of little use.
Got an e-mail from OāReillyās saying it shipped. Be here tomorrow.
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Part arrived. Guess what, the blend door actuator from OāReillyās has the same part number as the mode door actuator from RockAuto. AC Delco # 15-73620
Edit: Went to GM Parts online, itās the same actuator for blend, mode and recirculation. Also, RPO codes D07 and CJ2/CJ3 have nothing to do with it.
Edit: went to the AC Delco web site. They show the blend door and mode door actuators as separate. The AC Delco part number for the mode door actuator is 15-73620, the blend door actuator is 15-73621.
O-Reillyās sent me the mode door actuator. Itās going back.
Ok ordering PN 1572971 from RockAuto. Turns out the note about except D07 only applies to it being used on the recirculation door, not to any of the other applications. So in my case, the D07 was a red herring.
Now off to OāReillyās to return the wrong part.
This is why shops charge $85 to replace a cabin filter . Thereās many many ways to make a mistake involving part numbers, and usually they all get made at one point or another.
New actuator is in and working ish. For some reason the actuator will go all the way to the limit on the hot side but only about half way on the cool side. Maybe the door is all the way closed or maybe not. Iām just looking at the slot in the bottom and the limit marks. Will find out later.
I also had to replace the fan motor resistor pack and the wiring harness to it. The connector had melted, now a new issue, speed 2 does not work, all the others do. I did have a problem with the splice I used on the wire for speed 2. I used raychem crimp and heat shrink splices. Working under the dash sucks.