20 Most Recent
2002 Buick LeSabre Questions & Answers
What is a cooling fan s/p (relay)?
They are all in the fuse box under the hood the relays dont work in a way where one controls one fan and one controls another fan they run the fans in series for low speed and paralel for high speed. They are numbered 37,39,40 you would have to replace them all to see if that takes care of your problem
Where is the battery located in my 2002 lesabre
It should be under the back seat in the passenger side.The bottom cushion hinges forward on hooked anchor tabs at the lower
front of the cushion. Take hold of the bottom cushion at the seam where
it meets the bottom of the backrest and lift. The bottom cushion will
hinge forward and the hooked tabs at the lower front of the cushion will
release from the anchors so that you can lift the cushion out of the
car.
Passkey 3 disable
How about actually FIXING it? It's really easy. There is NO way to disable PassKeyIII unless you know how to rewrite the software code. If you could disable it, they wouldn't call it anti-theft.
All of sudden the heater
Manual or automatic climate control ? Duel zone ? Could be caused by a stuck or sticking temp. blend door actuator . Hooking up a scanner an checking for DTC'S - diagnostic trtouble code's should be the first thing to do , not guessing an just replacing parts . Automatic system can set a bunch of DTC'S
DTC B0126
DTC B0131
DTC B0159
DTC B0164
DTC B0174
DTC B0179
DTC B0184 or B0189
DTC B0234
DTC B0237
DTC B0249
DTC B0252
DTC B0269
DTC B0272
DTC B0279
DTC B0282
DTC B0490
DTC B1000
DTC B2805
DTC P0530
DTC P1536
DTC P1540
DTC P1546
Your best bet mite be to take your vehicle to a qualified repair shop .
Replaced thermostat, heater core is hot on both
The blend door in the HVAC plenum controls temperature, and that door has an electrical actuator that may have failed. Switching door(s) for diverting air to the different outlets is set by vacuum controlled diaphragm(s) and maybe either a diaphragm has failed or you have a vacuum line problem.
Since both are controlled by the HVAC control panel/module you replaced, sounds like even though you replaced it, it may not be working correctly - the only way to diagnose is to check the electrical line to and back from the actuator for correct readings, and vacuum lines at the controller and diaphragm(s) for vacuum. You should also recheck the connections to make sure they are correct..
If you used a replacement controller from another vehicle, the replacement controller must be an exact match to the HVAC option in the vehicle, and a new OEM version is strongly recommended if you can find one. Try YouTube to see what's involved in fixing these components.
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