Hello,


As a proud owner of a RHD 1999 Blazer I thought i'd share a couple things which may be helpful to other RHD S10 Blazer owners around the world.


Firstly - anyone who needs to replace their radiator will quickly discover that they cannot fit a LHD radiator as the hoses are the opposite way round & the steering gear will be in the way.
The correct radiator is readily available from RockAuto & is the genuine AC Delco one that GM fitted at the factory. Part numbers are as follows:-


AC Delco # 21046
GM Part # 52477682


However, if you search for the radiator under the Blazer you will not find it, for some reason they do not list it in the radiator section - you have to search for the part numbers above. I had to get one back in the summer, yes it cost me just over £400 including shipping but that was still £300 less than what Bauer Millett wanted here in the UK - for exactly the same item! Just because they are a franchised GM USA dealer they think they can charge what they like - I avoid them like the plague! I actually laughed & put the phone down when they gave me the price.


The second item that is has been unobtainable from GM for some time is the RHD Blazer pitman arm - GM part # 12471299. As anyone who has tried to fit a LHD arm will have found out - it hits the chassis when on full right lock - effectively giving you less lock one side than the other.
Unless you can find a local engineering company to somehow restore some fit to your arm - the only other way is replacement. I have heard of someone cutting the balljoint off a LHD arm & welding it to the RHD one - not impossible I suppose but it would have to be good, accurate welding for such a safety-related part?
The guys below in new Zealand can supply an exchange arm - current price $220 New Zealand Dollars + shipping to wherever you happen to be. Not cheap but at least it's a source for them. I grease mine religiously to try to make it last as long as possible.


www.bunce.co.nz


Quite why GM would discontinue such a common wearing item is beyond me. I tried to contact GM direct to ask them why on a couple of occasions & (predictably enough) got no reply.


Anyway, I hope this article proves helpful to any fellow RHD owners.
Having owner mine for several years now & worked on several others I have built up quite a lot of knowledge about them (and their quirks) so if anyone needs any advice i'm more than happy to help.
However, I am always learning all the time & sometimes I come across problems I haven't encountered before so have to ask others on here. That's what this forum is about - long may it continue!

 

Hi the different points about the rhd compared to lhd are interesting and maybe you can help with another thing that is obviously different, my a/c -heater will only blow hot AND I MEAN HOT the a/c itself has beenchecked and tested and all ok in fact very cold but whatever i do it only blows hot in the cab. I have been told by the a/c engineer that it is a flap not opening under the dashboard but every thing i find online about it seems to be for a lhd truck and bears no resemblance to mine when i look under the dash. can you recommend anywhere i can find the information i need to trace this fault please

 

Hi,

The usual suspect for this kind of problem is the blend door actuator. It is located on top of the heater ducting above the glovebox on RHD models. It controls a flap which allows warm or hot air - or a mixture of both.It is officially a dashboard out job to change but it can be done in situ - although it's a little cramped & you need small fingers. Take out the glovebox & feel up on top of the ducting - that's where it is. It is held on with 3 screws.
As a matter of interest, have you tried pulling the HVAC fuse & replacing it again. When you do this the system will perform a self check & you will hear this actuator moving back & forth if you listen carefully.
I am not saying this is definitely the problem but by what you describe it's highly likely that's where it is.

Here is a little video explain how to change it. This for the LHD models but RHD ones are mirror image.

 

thank you i will try that tomorrow

 

I have had the same issue with my 2002 RHD Blazer only blowing hot air.
I put in an inline valve in the hot water in pipe in the engine bay and when the tap is off i have A/C.
So I am thinking it is the same blend door issue as above.
But I also noticed the connector to the Heater resistor keeps blackening the fan wire in the loom.
It looks like it is getting way too hot so drawing too much current.
My suspicion is the heater fan is drawing too much current.
I am guessing the this is a complete heater box removal for this?
Or is there a sneaky way to get it out,in the vehicle like the blend door actuator.
Thanks guys.

 

The blower fan can be removed from the engine compartment side, it involves cutting out a section of the plastic housing to remove it & then glueing it back afterwards. Check out the following link - this is for the LHD models but the RHD procedure will be the same - just mirrored. The RHD factory manual (which I sadly no longer have) used to recommend removing the passenger side fender (wing) to gain better access but it can be done without removing that. It is a fiddly & time consuming job but it can be done. I never actually had to do it on my own Blazer (which I no longer own) but I did do it on a friends one. The fan was very stiff & drawing a lot more current than it should have been. We took it apart & lubricated the spindle the best we could & put the same one back again & everything was fine afterwards. Wasn't an easy job I have to say, took us a good day of messing around. Let me know how you get on.

 

Interesting read. Do you have any numbers for the applicable radiator hoses? Any pics of this setup? It would be useful information for swaps is why I ask. Thanks