Question about 2000 Pontiac Grand Prix

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Heater fan will not come on and the automatic head lights are off

The automatic head lights will come on when selected with the manual head light switch but the heater fan still does not come on.

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You may need a new blower motor and they are simple to change out they are on the paeesenger side and held in by three screws and a plug. you put the new one in the same way as you took that one out

Posted on Feb 12, 2009

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Have 04 f150 when turn on heater our head light all interior lights turn off blower motor does not work turn signals won't work but bright light indicator and flashers light up but don't work


Sounds like a severe short in the blower motor circuit. Usually there is a module near the fan that controles speed of fan, problem could be there.

Nov 16, 2015 | Cars & Trucks

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99 grand cherokee blower selector high position not working. Blows only level 1-3. replaced resistor, same problem.


automatic or manual a/c.

I'm going to assume manual but Auto is simular and i can give some direction if you have that as well.

There will be a black with tan wire at the blower resistor. This is the wire the HVAC control head grounds to turn the fan on high speed. With a test light hooked to power unplug the resistor, set the blower speed to high, turn the key to the run position. the test light should turn on when you probe the connector. If it doesn't pull the control head and back probe that same wire at the back of the control head with everything still plugged in. If the test light again does not illuminate the the control head is bad and not providing ground

If the test light does turn on when you probe the blower resistor connector plug the resistor back in. Turn the blower speed to the low setting. With your test light hooked to ground see if there is power on the black with tan wire. if there is turn the HVAC off and ground that wire with a jumper wire. the fan should run at high speed. If it doesn't you have a defective resistor.

Jul 01, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Need to know on a 2003 Jaguar X Type what fuse goes to the Fuel pump? The fuse box cover only lists the fuses by number.


The fuse box in the passenger compartment has the fuse you want, it is the F81 Mini 20 Yellow Fuel pump control module other fuses in that compartment are.
F60 Mini 20 Yellow Power windows left-hand.
F61 Mini 20 Yellow Power windows right-hand.
F62 Mini 7.5 Brown Rear fog lights.
F63 Mini 7.5 Brown Right-hand - front side light, side markers, rear lights
F64 Mini 7.5 Brown Left-hand - front side light, side markers, rear tail lights.
F65 Mini Not used.
F66 Mini 30 Green Left-hand power seat switches, heater module, lumbar pump.
F67 Mini 5 Tan Battery back-up sounder, transit relay, HID/dip relay, automatic transmission control module.
F68 Mini 15 Blue Cigar lighter.
F69 Mini 7.5 Brown Telematics display, In-car entertainment head unit, antenna module, navigation module, VICS (Japan), parking aid, amplifier premium 1 system, phone handset, phone power supply module, instrument cluster, PATS module.
F70 Mini 30 Green Right-hand power seat switches, heater module, lumbar pump.
F71 Mini 15 Blue VICS (Japan), telephone transceiver, telephone handset.
F72 Mini 15 Blue Radio head unit, CD player, navigation electronic control module, diagnostic connector/OBDII connector.
F73 Mini 15 Blue Sunroof unit/module.
F74 Mini 15 Blue Instrument cluster, Premium ICE amplifier unit.
F75 Mini 7.5 Brown Mirror fold back module, battery back-up sounder, air conditioning ECU.
F76 Mini Not used.
F77 Mini 7.5 Brown Left-hand and right-hand heated seats modules.
F78 Mini 5 Tan Phone power supply.
F79 Mini 10 Red Automatic transmission only: Reverse lights, reverse light switch, reverse park aid, electrochromic mirror, instrument cluster.
F80 Mini 7.5 Brown Park interlock, heater switch, OBDII, blower relay.
F81 Mini 20 Yellow Fuel pump control module.
F82 Mini 10 Red Variable power steering, alternator.
Manual transmission only: Reverse lights, reverse light switch reverse park aid, electrochromic mirror, instrument cluster.
F83 Mini 15 Blue Not used.
F84 Mini 5 Tan Instrument cluster, passenger airbag fascia light, seat weight sensor.
F85 Mini 7.5 Brown Right-hand high beam light.
F86 Mini 7.5 Brown Left-hand high beam light.
F87 Mini 15 Blue Front Fogs master light switch.
F88 Mini Not used.
F89 Mini Not used.
F90 Mini 7.5 Brown Stop lights, cruise control.
F91 Mini 10 Red Sunroof, electrochromic mirror, power windows, power mirrors.
F92 Mini 10 Red Manual transmission cruise control clutch switch, ignition coils, automatic transmission rotary switch.
F93 Mini 30 Green Windscreen wipers.
F94 Mini 20 Yellow HID module.
F95 Mini 10 Red Airbag restraints module.
F96 Mini 7.5 Brown ABS module.
F97 Mini 7.5 Brown Glove compartment light, instrument cluster lights, licence plate lights.
F98 Mini 10 Red Mirror heaters.
F99 Mini 10 Red Luggage compartment light, footwell lights, puddle lights, vanity mirror lights, interior lights, aircon control unit, roof console unit

Jan 07, 2011 | 2003 Jaguar X-Type

1 Answer

No day lights/ no heater/ac fan


Ignition switch doesn't sound right, instead try locating relay,that would be the first thing that I would check.Hope I could help.

Jan 04, 2010 | 2002 Pontiac Grand Prix

1 Answer

The heating fan won't turn on, no power to fan. intermittent problems with the selector buttons not lighting up and working to select mode. all fuses and relays check out fine. do i need to replace the...


no, you may have two problems, the fan il bet is a blower motor resistor,replace that and fan will work again, the selector problem may just be bulbs not lighting, if you can can air to blow in areas you select then dont worry about the light not lighting, if it dosent select then replace the head, hope this is helpful.

Dec 07, 2009 | 1994 Buick LeSabre

1 Answer

03 Pontiac Vibe after rear ended several electronics died


10 amp fuse under steering column that says it is for 'Gauge' fixed this problem. That fuse had blown.

Oct 23, 2009 | 2003 Pontiac Vibe

1 Answer

Renault Clio Air Con Fan Problem - Wont turn off


Find Someone else,
Have Them Replace The Fan Selector Switch,
There Is Only 1 Fan In The System, Since You Can Select Between Defrost, Dash, Floor,
But Cannot Control Fan Speed/Shut-Off Fan.
I Would Replace The " Fan Selector Switch" Installed In Your Heater-A/C Controller Unit
Mounted In Your Dash.
Take Care God Bless

Jul 02, 2009 | 2000 Renault 181

1 Answer

Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part. Heater Fan works occasionally on speed 5 only. When it doesn't work at all the lights...


for the fan blower motor it could be the resistor or the fan control speed control switch is bad.for no lights replace the DRL RELAY for the lights. for the heated seats check the fuses.

Jun 01, 2009 | 2002 Pontiac Grand Prix

1 Answer

Dash lights go off when head lights are turned on.


Your car is perfectly fine. Your dash dimmer is turned all the way down. Your dash dimmer automatically turns on with your headlights. You need to locate your dash dimmer and turn it up.( will be easy to locate with owners manual).

May 16, 2009 | 2006 Toyota Prius

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