I had a shot blower resistor pack (no 1,2 or 3 speeds on the blower) so I ordered a replacement unit. It arrived today and I put it in just now. I looked around and did not see a "how to" on it, so maybe this will help some others.
Vehicle 2002 Trailblazer LS - no automatic temp controls
Time spent: about 20 minutes (spent time getting the right stuff from the garage ).
Part: blower motor resistor (I used parts4chevys.com so I used the drill down menu to find it, sorry I do not have the PN handy)
Tools:
7mm socket or nut driver
7/32" socket or nut driver
one long screw driver (flat blade) - optional
flash light - optional
step one: locate the two 7mm screws holding the plastic kick plate under the passenger side dash, remove them, and then carefully remove the plastic cover
step 2: look up under there and you can see the old resistor pack. It has one connector and a pair of wires going from it. Unscrew the two 7/32" screws and it will come down, unclip the wire harness
step 3: open the glovebox and empty it, now release the catch so that it can hang down
step 4: locate the end of the wires that came from the resistor pack, they are plugged into the blower, release the clip and remove them (I used a screw driver to push in on the little clip to release it)
step 5: reverse the process and install the new one
here is the comparison of the two
hope that helps somebody....
From the Roadie: Since everybody looks in this post if they use a search, I'm just going to add the schematic HERE for one-stop shopping
Vehicle 2002 Trailblazer LS - no automatic temp controls
Time spent: about 20 minutes (spent time getting the right stuff from the garage ).
Part: blower motor resistor (I used parts4chevys.com so I used the drill down menu to find it, sorry I do not have the PN handy)
Tools:
7mm socket or nut driver
7/32" socket or nut driver
one long screw driver (flat blade) - optional
flash light - optional
step one: locate the two 7mm screws holding the plastic kick plate under the passenger side dash, remove them, and then carefully remove the plastic cover
step 2: look up under there and you can see the old resistor pack. It has one connector and a pair of wires going from it. Unscrew the two 7/32" screws and it will come down, unclip the wire harness
step 3: open the glovebox and empty it, now release the catch so that it can hang down
step 4: locate the end of the wires that came from the resistor pack, they are plugged into the blower, release the clip and remove them (I used a screw driver to push in on the little clip to release it)
step 5: reverse the process and install the new one
here is the comparison of the two
hope that helps somebody....
From the Roadie: Since everybody looks in this post if they use a search, I'm just going to add the schematic HERE for one-stop shopping