Relays problems
Relays: Switch activated electrically.
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See fuse box diagram
Top problems
Ac compressor will not turn on, only rarely and if so only momentarily 
Solved
Chevrolet Suburban 2005 Suburban 5.3 L 240000 miles
Ac doesn’t turn on, no Freon leak, has enough, have bypassed low pressure switch on accumulator, no high pressure switch located-(have checked around condenser and high side lines-this is a dual cooling unit. No codes, ac switch does light up when turned on and both blowers are working-could the three cooling fan relays have anything to do with activating the compressor? I did notice that the cooling fan motors do not speed up when turning on ac, and also engine temperature is running right where it should be, at 210 degrees, never overheats
3 reports
Best answer (according to Jesse)
JE
High pressure switch was replaced-was out of sight beneath heater hoses below water pump on condenser line coming from compressor
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Check the gap on the clutch. If it is excessive the coil will not pull in especially when voltage is below 13 volts.
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CommentMy dash lights and gauges stopped working and engine died
Chevrolet Suburban 2004 1500 250000 miles
Dash lights radio engine died going down road...starter turns motor over but want start. Ignition fuse good fuel pump fuse and relay good. Has fuel in the tank. Sun roof want close and both doors windows want work .04 suburban 1500 250,000 miles
8 reports
My electric box under the hood had a wire running from the fuel pump to the fuel relay
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CommentFuel pump relay
Chevrolet Suburban 2013 250000 miles
I noticed that the fuel pump relay is missing do you have to have a relay for that? I’ve had other relays stolen a few months ago and replaced them and now I’ve noticed that the fuel pump one is missing. Do you have to have it?
1 report
I don't have one in my 2012 Chevy suburban and it seems to work ok.
CommentLow beam lights not working
Chevrolet Suburban 2011 120000 miles
Low beam headlights is not working. All the fuses seam to be fine. Replaced relay ,with no results I checked one bulb that seems to be ok...
1 report
Electrical problems
Chevrolet Suburban 2001 200000 miles
I had a wire running from the fuel pump to the fuse box under the hood that went into the fuel relay the stop light thing on the brake pedal was bad. I took it off, and I lost all power and now nothing work.
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Reverse lights and overhead dome lights are out
Chevrolet Suburban 2005 5.3 4x4 z71 225225 miles
The overhead dome lights would flicker for about a month and now finally will not come on. The door lights come on no problem which leads me to believe it is not a door switch because they come on when any door opens. Ive checked all fuses and none are blown. Is there a relay for the overhead dome lights?
Simultaneously the reverse lights are not working and ive checked those bulbs.
Simultaneously the reverse lights are not working and ive checked those bulbs.
1 report
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