Power Door Locks not working

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Kevinmac

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Does anyone know if there is more than one fuse that goes to the Power Door Locks on a 1997 Tahoe LT. I know that the A circuit is for the power seats and for the power locks and my power seats work. It states in the owners manual that number 13 fuse is for the cigarette lighter and Door Lock Relay but my number 13 fuse has a short in it and its been like that since I've had the vehicle for six months and my power locks just stopped working last week. If there is anyone with the same vehicle would you mind pulling your number 13 fuse and still see if your power locks work. If anyone has any other ideas could you please get back to me.
 

99Yuk

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Your right, there are two fuses that run directly to the power door lock relays.
I pulled this from a 1997 tahoe wiring diagram that I had found.
picture.jpg
I don't know the fuse number of the second fuse though, or which one it is in the fuse panel. You might have to look that part up.
 

95slowhoe

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When my fuse for my cigarette lighter was blown my power door locks did not work either. I replaced the fuse and all was good.
 
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Kevinmac

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Fuse keeps blowing

I put two different fuses in the Fuse 13 slot and the fuse blew both times. Just wondering what I should do, when I pulled the fuse there was a 25 fuse in there but it calls for a 20 so I tried a 20 and then a 25 and it blew both times.
 

SunlitComet

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Fuse 13 cover, If installed, Power Amp, Rear Lift gate(release switch I believe), Cig lighter, Door lock relay, and power lumbar seats. You Could unplug each component at its connector to isolate it form the bunch to dee if it still blows. But since you not would activate anything intesionally yet start with about 5-10 fuses first.

These might help:

http://www.sunlitcomet.com/images/automotive/162464694.gif

http://www.sunlitcomet.com/images/automotive/62392105.gif


Let me know if you need connector locations.
 
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Kevinmac

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Yes could you please let me know the connection locations.
 

SunlitComet

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Match number below with diagram. By doing C212 first you can disabble about evereything except the cigar lighter and liftgate hatch(if installed) at once from your fused supply wire.

CONNECTORS LOCATION
C100 LH rear of Engine Compartment at Bulkhead
C101 LH rear of Engine Compartment near Fuse Relay Center
C102 LH rear of Engine Compartment near Fuse Relay Center, Mounted on Fender
C103 LH rear of Engine Compartment, under Brake Master Cylinder
C104 LH rear of Engine Compartment, under Brake Master Cylinder
C105 (VIN J) Rear of Intake Manifold, near Center
C106 Top of Engine near LH Valve Cover
C107 LH front side of Transmission
C108 (VIN J) RH side Intake Manifold, near Throttle Body
C110 LH rear of Engine Compartment, near C100
C111 LH rear of Engine Compartment, below Master Cylinder
C114 At Convenience Center
C116 LH front of vehicle, near Core Support
C120 Rear of Engine, near Transmission
C200 Behind RH portion of I/P, near Heater Motor, in Foam Wrap
C202 Under Steering Column
C203 Behind RH portion of I/P, near Heater Motor, in Foam Wrap
C204 Behind RH portion of I/P
C205 At Convenience Center
C206 Inside LH "A" Pillar, lower portion
C207 Inside LH "A" Pillar, lower portion
C208 Inside LH "A" Pillar, lower portion
C209 Inside LH "A" Pillar, lower portion
C210 At Convenience Center
C211 Under Driver's Seat
C212 Under Driver's Seat
C213 Inside RH "A" Pillar, lower portion
C214 Inside RH "A" Pillar, lower portion
C215 Inside RH "A" Pillar, lower portion
C218 At Convenience Center
C219 At Convenience Center
C220 At Convenience Center
C221 At Convenience Center
C222 At Convenience Center
C224 LH rear of Engine Compartment, under Brake Master Cylinder
C225 LH rear of Engine Compartment, under Brake Master Cylinder
C227 Under LH side of LP, near Stoplamp Switch
C230 Behind RH side of LP, above HVAC Evaporator Housing
C240 In cross body harness, 100 cm into Seat Belt Switch Breakout
C241 Seat jumper harness under LH Front Seat
C266 LH side of Steering Column, near Bulkhead
C298 Behind LH side of I/P, near Convenience Center
C299 Behind RH side of I/P, above HVAC Evaporator Housing
C300 In Overhead Console
C301 LH front Kick Panel
C302 LH front Kick Panel
C304 Under Driver's Seat
C305 In Headliner at #1 Roof Bow
C306 Under front Seat
C400 RH rear of vehicle, above Auxiliary Blower Motor
C401 RH rear of vehicle, above Auxiliary Blower Motor
C402 Top center rear of vehicle
C403 LH "D" Pillar, top
C404 LH "D" Pillar, top
C405 RH "D" Pillar, top
C406 RH "D" Pillar, top
C407 Beneath LH rear Edge of Bed
C408 (03, S3) Beneath center rear Edge of Bed
C408 (06, 16) Lower center outside portion of Endgate
C409 Beneath rear center of Bed, near Bumper
C410 Top center rear of vehicle
C411 LH rear of Cab
C413 LH rear of Cab
C414 In line to front Dome Lamp
C415 In line to rear Dome Lamp
C496 RH "B" Pillar
C497 RH "B" Pillar
C498 LH "B" Pillar
C499 LH "B" Pillar
 
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Kevinmac

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I'm going to have a friend of mine look at these diagrams, not to electrically inclined. When I look at the diagram I see that the Power amplifier relay is in the Suburban only. The reason that I'm asking is that my son had a new head unit put in his truck and it seemed that the power locks stopped working after that I believe, just wondering if that could have been a problem. I also see that these diagrams are from 1996 but I imagine that they would be the same for a 1997 Tahoe. The cigarette lighter has never worked in the vehicle since he's owned it and it doesn't have the liftgate hatch. Why would I start with 5, 10 fuses after I unplug C212 because then there would be nothing active on the circuit. Also where is the convenience center located. Thanks for your help.
 
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SunlitComet

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I forget where exactly but there is supposed to be a power door lock reley in the dash. Perhaps it messed with the radio install?

I recomended small fuses becuase if it shorts out as soon as you plug it in I was concerned that with high amp fuses that it may stress the wire to much and too many times with those high amps and may eventually cause a fire.

When the problem gets fixed where it does not blow any more I would be safer to go back to the original fuse.

Just trying to find a safe way.
 

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