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Customer Reviews
Most helpful customer reviews
17 of 17 people found the following review helpful.
By jason
It did not work properly when I first installed it. Then I read where you have to do a hard reset after installing it and plugging it in. First disconnect the battery for about a minute or two and then re-connect the battery. Turn key to on position and leave it for about two minutes. Turn it off and then start the vehicle. It worked great once I did that. Oh and by the way this part (604-106) did cross reference with the GM factory part 52402588.
16 of 18 people found the following review helpful.
By Roy
I have a 2004 Chevy Silverado 1500 Crew Cab 5.3L V8. For the last couple of years, the A/C on the driver's side would periodically blow very hot air (when this happened it would not stop blowing until I turned the truck off and restarted the engine). Repair shops and dealerships wanted over $400 to fix this issue.
This replacement actuator fixed the problem, and was easy to do myself in less than an hour.
Steps I took to install this part:
1) Remove I/P insulator panel. This is the black plastic panel underneath the dash covering the center and passenger underside, which covers the HVAC unit. This is attached with 4 screws - use a 9/32 socket to remove them. The second screw from the left can be a bit of a bear because the recess on the panel coupled with the center console bump makes it difficult to access this screw. A regular socket is to shallow, but a socket extender is too long to get in there. You will want to use a 9/32 deep socket to reach this screw.
2) Remove the old actuator: first unplug the electrical connector from the left actuator, then remove the 2 screws holding it in using a 7/32 socket.
3) Pop in the new actuator, plug in the electrical connector, and replace the screws and I/P insulator panel.
4) The new actuator will need to be calibrated before it will work properly. I followed what a couple other people said here about doing a hard reset - disconnect the battery for a minute or two, then reconnect the battery. Turn the key in the ignition to the ON position for 2 minutes. Then turn the key off and start the engine. In addition to this hard reset, I had to remove the fuse to calibrate the HVAC unit. Simply remove the HVAC/ECAS fuse for at least 10 seconds, then replace it (I just went ahead and put a brand new fuse in there). Then turn the engine on and let it run with the A/C fan OFF for 40 seconds; during this time the HVAC unit will self calibrate. Then turn on the A/C and enjoy the cold air and the $350 you saved by doing this yourself :)
5 of 5 people found the following review helpful.
By Daniel S. Lah
I understand why some people feel very passionate about only using GM parts. My philosphy is different. If I'm replacing the part because of an asinine GM design that caused premature failure, and 90% of all parts I've replaced on my 04 GMC Sierra fall under that category, then I purposely avoid using genuine GM parts for the replacement. So far, Dorman hasn't failed me yet. This actuator is another great example.
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