Thread: a/c issues: help please

Originally Posted by limones007

I know what's wrong with ur car . It sounds like what my car had , try changing the ignition switch , that should solve all ur little problems

X2!

Mine did all the same stuff - it was the ignition switch.
If it acts up again, check for 12V at the HVAC/DIC fuse. Mine was intermittent and I would sometimes lose the A/C compressor when the headlight switch was in the "Off" (DRL) position. DIC didn't work right, blower speeds didn't always work, sunroof even acted funny.

Everything now works perfectly after replacing the ignition switch.

Ok ill get that all checked this weekend I want to check again that this could not be the body control module because don't that control power to the accessories like the dic and a/ c I'm trying to single it down I heard lot about the ignition switch and the blower resistor and I find it weird about the bcm because I hear I light snap from the bcm by my left foot when I turn on the blower

Originally Posted by us Sgt

Is it a ignition starter switch or what is the actual name advance auto has like three is it a harness I assume it is

It is an assembly that includes the switch and harness.
GM Part # 26068757

Diagnosis: Sparky's Answers: 2002 Pontiac Grand Prix Blower Inoperative, Erratic

Replacement Instructions: Sparky's Answers: 2002 Pontiac Grand Prix, Changing The Ignition Switch

as said above:

the low side is near the fire wall. Easy way to remember what side is low and what side is high, is LOW side always is the LARGE line. L & L in other words.

If your fan settings just don't work, its usually the resistor. Usually you end up replacing both at the same time, the resistor AND the fan. If you do have to get a resistor, spend the few extra bucks and get a GM one from the dealer, the parts stores ones are junk, and usually last a year or so.

If your fan settings don't work, AND your DIC is messing up, then is normally the ignition switch. You have to remove the top and bottom covers on the steering column, and remove the cover under the dash, and the one above the pedals on the drivers side to remove and reconnect everything. Its a plug and play installment. Same with the resistor, I recommend getting a GM one for this part as well.

~F~