The tailights on my van don't work the fuse keeps blowing out

Pontiac Montana (2002) - fuse box diagram
https://www.autogenius.info/pontiac-montana-2002-fuse-box-diagram/

abs not going to be the cause...possible passlock security system problem....does the security light flash rapidly when it wont start? it is common for the security system to act up on these vehicles

check the blower motor resister

fan switch is more than likely bad. you can try air in a can to blow out any debris that may cause it to lose connection in the switch. thats worked sometimes. but if that does'nt work,the only solution is to replace the fan switch in the dash. thank you for choosing fixya.com

Have you checked for a blown fuse?This is what it sounds like has happened.

2002 Pontiac Pontiac Montana 3.4 liter V-6 VIN "E"



Hope helps (remember rated and comment this).

Check your cooling fan motor at radiator, should come on at about 220 -225 deg, while moving you have air blowing through radiator and will keep engine cool, at stops no air going through radiator and will cause over heating. Have fan check out

Did you check the fuses, those components may all be on the same circuit.

How do you know the thermostat is ok? If in doubt replace it. Water pumps are a even bigger what if. Did he do a radiator flush? Cooling system flush of the engine? Cooling fans come on at what temp and go off when? Replace the engine temperature sensor? 6 years old is bound to have sensors and such go bad.

are u saying u replace the switch on the climate control
cause it would be the resitor on the blower causing it