1989 C1500 Air/Recirc Actuator replacement part number?

[pgp66]

Hi All.
My right hand side actuator makes that typical noise they get and needs replacing, but I can't seem to find the correct one listed. My 89 truck has the digital display Heater A/C controls.

There are plenty of shops that sell the middle Heater/Blend and left Mode/Demister ones for 88-94, but not the right Air/Recirc passenger side one. LMC list one but they don't give part numbers, but it shows 91 to 94 only. I read somewhere the part number for it may be SK604103 from SKP, but searching on the number also shows with Manual Temperature Control 91-94 as what it fits.

So from other things I have read too, 1988 to 90 have a different one to 1991 - 94. If that is so, don't reply if you have a 91 or newer. The one in my truck now, I haven't removed it yet, but looking either up or down on it I can't see a sticker or number on it, so it may have fallen off.

So has anyone bought one for the right side and it definitely works in an 89 to 90 for use with the digital hvac controls? And if so what the part number is and how many pins it has on the socket?

Thanks in advance.
Paul

 

[someotherguy]

Howdy Paul,

Look up your vehicle on Rockauto and see GPD # 1712063. It should be the same part for 1988-1994 applications.

Richard

 

[GoToGuy]

This is out of the 91 electric service manual , it looks like the early models are all three the same modules .

You must be registered for see images attach

 

[pgp66]

Howdy Paul,

Look up your vehicle on Rockauto and see GPD # 1712063. It should be the same part for 1988-1994 applications.

Richard

Thanks, I will try that one, hopefully it works!!

 

[pgp66]

This is out of the 91 electric service manual , it looks like the early models are all three the same modules .

You must be registered for see images attach

Thanks. Maybe the same pinout but when you look at what replacement is for what in the 1988-89 models all 3 are different part numbers. Who knows!! Its so hard to guess though.

 

[GoToGuy]

It's the Factory Service Manual Wiring Diagram, not a pin out. Includes diagnosis, locations of grounds, splices, connectors, connector identify illustrations, loom position locations.

 

[someotherguy]

It's the Factory Service Manual Wiring Diagram, not a pin out. Includes diagnosis, locations of grounds, splices, connectors, connector identify illustrations, loom position locations.

It's a little puzzling to me when it comes to the aftermarket for these actuators. There's some brands that carry what appear to be a part for each different function, with different part #'s to go with that.

If you look them up on GM parts sites, of course most of them are long obsolete or have been superseded (sometimes several times) by newer numbers.

Then it gets even more confusing when some brands (Dorman in particular) "consolidate" many slightly different parts into a single item ("one size fits many") - their actuator # 604-991 supposedly fits all 3 functions for pretty much all GMT400's, plus a whole whack of other vehicles too including some GMT800's, various GM cars, and a few Volvo and Mercedes applications.

Richard

 

[GoToGuy]

Could they incorporating multiple circuits within a single module to work in more than one position? Or in more than one application, ie a Buick, or SUV lineup?

 

[pgp66]

Its so frustrating when they make variable parts and hardly any aftermarket brand says it is a replacement for the 88-90. Dorman list that 604-991 number for the Blend and Mode, not listed for the Recirc side. And even Rockauto has them different on the 88, 89 and 90, and all brands have ones for Mode and Blend, not not many list as for Recirc.

Worst thing is you don't really know whether its going to work till you try it. Especially at approx $30 or more each, if it doesn't work then they won't take it back once open and fitted.

Anyway I will try the GPD 1712063 as suggested and hope it works. Will reply if it does for everyone else's benefit.

Thanks all for the replies.

 

[someotherguy]

Its so frustrating when they make variable parts and hardly any aftermarket brand says it is a replacement for the 88-90. Dorman list that 604-991 number for the Blend and Mode, not listed for the Recirc side. And even Rockauto has them different on the 88, 89 and 90, and all brands have ones for Mode and Blend, not not many list as for Recirc.

Worst thing is you don't really know whether its going to work till you try it. Especially at approx $30 or more each, if it doesn't work then they won't take it back once open and fitted.

Anyway I will try the GPD 1712063 as suggested and hope it works. Will reply if it does for everyone else's benefit.

Thanks all for the replies.

Rock does show that GPD 1712063 for 1988-1994 GMT400's and it's what I have on my 1993 currently, working fine. What might catch you by surprise is when it shows up, the box may have a different part number on it. And if I recall, the part itself has a different number still.. LOL

Richard