Why does the air conditioner fuse blow? - 1997 GMC Suburban

Move the radio off that 10 A fuse.

I doubt the issue is a fuse. If the blower is blowing, then the issue is hot air. You ably need to have your ZC re-charged Freon but first you need it leak checked. Both these require special equipment. Go to a place that does only auto AC. They will know what they're doing.

It will be either a 30 or 40 Amp fuse. I should be marked on the legend. Also check if you have a relay, it may be bad.

The very first thing you need to do is to check for fuses or say faulty fuse. Secondly check fan which starts along with air conditioner, it might be manually switched off or the fan may have been clogged. Also reason can be lack of refrigerant - charge your air conditioner with refrigerant. Last thing you need to check is cooling coil - the cooling coil may freeze if there is no refrigerant in the system.

built into the motor is a resistor pack and this i suspect is your problem

This sounds like somewhere along the lines, your wires are exposed and touching. Look for an area that may have been modified. For example, when people put aftermarket radios in, things can get tight/rough when putting the new headunit in. Perhaps your wires were pinched?

40 amp, labeled "HTR" 3rd from lrft, above little fuses, .located in fuse box in dash . if its blown, the blower motor may be bad. also ckeck fuse labeled "gauge" upper left corner 10 amp ( that makes the relay work)

Is the fan blower getting power to it? Check the blower motor fuse to see if its blown.

Three possibilities;
All related to blown fuses,

1- Fuse blown in the engine compartment LH.
2- Fuse blown in the cabin forward LH below the dashboard (below your legs left hand).
3- Fuse blown in the harness (wire bundles) below the dashboard very easy to reach with your hands “just look underneath steering wheel ".

U said " The air conditioner blows, but the air is not cold.
" Yes only the fan working which might receiving power independent all from those other mentioned things.
If all fuses OK. Then look for broken wires.

Regards;
MAR

there might be a problem in the electric circutiry! or check the generator / dynamo or perhaps, loose electric connections are causing the problem!!