Ac In 2002 Gmc Sierra 1500

[BrentSierra]

Hi guys, glad to find a good forum like this.

I have a problem with the ac in my 2002 gmc sierra 1500 5.3L. It seems to be cold enough, but not good power, some some vents work better than others. the drivers side one has almost 0 power, the passenger side has OK power, but not like i feel it should. the middle ones above the radio are so-so as well. any advise is appreciated

[pistonslap]

This may or may not apply to your year of truck. On my 2000 the cabin filters were clogged with dust. I took them out temporarily and it made a huge difference in the air flow.

[BrentSierra]

This may or may not apply to your year of truck. On my 2000 the cabin filters were clogged with dust. I took them out temporarily and it made a huge difference in the air flow.

 

 

thanks, will try

[Mckenzie]

mine has the same problem, how do i access the filter?

[txab]

mine has the same problem, how do i access the filter?

 

 

+1

[Mckenzie]

mine has the same problem, how do i access the filter?

 

 

+1

 

What the hell does that mean?

[FriendlyMan]

mine has the same problem, how do i access the filter?

 

 

+1

 

What the hell does that mean?

 

 

RTFM = Read The F. Manual.

 

In my 2000 Chevy Silverado 1500, there's a long black cover underneath the dash on the passenger side. It has three 7mm hex screws (if I remember right). If you take the cover off, you'll find another little cover next to the fan (it's not exposed when you take the cover off, but it's in a round housing). The little cover next to the fan has one screw on one side (towards the firewall) and a little push latch on the other. It's like an L shaped, 7-8" long, 1.5-2" wide piece of plastic. If you take it off, you should find the filter in front of the AC evaporator (looks like a little radiator).

 

If you take the filter out and screw the little cover back on, than test your AC vent power, if they all work how they're supposed to that was your problem.

 

On a side note, when I did this I realized that one of the screw holes for the big black cover is actually through the evaporator's condensation reservoir/drain. You can put one of the screws back in to plug it, or just wait until you put the cover back on. So don't be alarmed if you turn the AC on and you see a little water on your floor.

 

Also, my truck has a stick shift, but I can imagine the setup is very similar.

[Mckenzie]

mine has the same problem, how do i access the filter?

 

 

+1

 

What the hell does that mean?

 

 

RTFM = Read The F. Manual.

 

In my 2000 Chevy Silverado 1500, there's a long black cover underneath the dash on the passenger side. It has three 7mm hex screws (if I remember right). If you take the cover off, you'll find another little cover next to the fan (it's not exposed when you take the cover off, but it's in a round housing). The little cover next to the fan has one screw on one side (towards the firewall) and a little push latch on the other. It's like an L shaped, 7-8" long, 1.5-2" wide piece of plastic. If you take it off, you should find the filter in front of the AC evaporator (looks like a little radiator).

 

If you take the filter out and screw the little cover back on, than test your AC vent power, if they all work how they're supposed to that was your problem.

 

On a side note, when I did this I realized that one of the screw holes for the big black cover is actually through the evaporator's condensation reservoir/drain. You can put one of the screws back in to plug it, or just wait until you put the cover back on. So don't be alarmed if you turn the AC on and you see a little water on your floor.

 

Also, my truck has a stick shift, but I can imagine the setup is very similar.

 

Gotcha, thanks!