A/C Controller issue 1992 C1500
May 6th, 2018, 5:12 PM
#1
CF Beginner
Thread Starter
Join Date: Dec 2013
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
A/C Controller issue 1992 C1500
HI EVERYONE! I have a problem with the digital A/C control in my 1992 C1500 Silverado. The Controller just quit opening the cabin air flaps. There are flashing horizontal “arrows” on the left side that weren’t there before. My garage guy reached under the hool and tugged at a plug on a sensor near the thermostat, snd suddenly the Controller was OK again. Today (3 days later), it’s back to flashing. I have a spare, good Controller, and it behaves the same when swappef. Not sure what that sensor is, but I’m sure it’s the problem. Could someone help me with this? I suspect a bad connection or a floating ground somewhere. THANKS FOLKS!!
Sandy
Sandy
May 14th, 2018, 4:49 PM
#4
CF Beginner
Thread Starter
Join Date: Dec 2013
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
HI EVERYONE! I have a problem with the digital A/C control in my 1992 C1500 Silverado. The Controller just quit opening the cabin air flaps. There are flashing horizontal “arrows” on the left side that weren’t there before. My garage guy reached under the hool and tugged at a plug on a sensor near the thermostat, snd suddenly the Controller was OK again. Today (3 days later), it’s back to flashing. I have a spare, good Controller, and it behaves the same when swappef. Not sure what that sensor is, but I’m sure it’s the problem. Could someone help me with this? I suspect a bad connection or a floating ground somewhere. THANKS FOLKS!!
Sandy
Sandy
Sandy
May 18th, 2018, 12:07 PM
#5
CF Beginner
Thread Starter
Join Date: Dec 2013
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Sandy Gerli
May 20th, 2018, 1:30 PM
#6
CF Beginner
Join Date: Apr 2018
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
https://www.justanswer.com/chevy/3k5...ompressor.html
this is a pretty decent picture of your relay location, the ac connector is number 1, number 3 is your relay. After looking up your specs and everything, it seems your style is different than mine, my 98, has the relay inside the driver side area under the hood.
this is a pretty decent picture of your relay location, the ac connector is number 1, number 3 is your relay. After looking up your specs and everything, it seems your style is different than mine, my 98, has the relay inside the driver side area under the hood.
May 21st, 2018, 11:47 AM
#7
CF Beginner
Thread Starter
Join Date: Dec 2013
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Under-dash A/C Conttoller Diagram
Thanks for the diagram, Brian. I suspect that the Mode Motor(?) may have a poor connection or a floating ground? Would the Mode Motor be responsible for opening the air outlet vents gradually between the Defroster and Floor? They worked perfectly up until about a week ago.
Ssndy Gerli
Ssndy Gerli
