Where is the ground point 200 on a 2002 avalanche

May be a voltage drop on the feed wires or weak ground point to those passenger side windows .

Were is the radio ground wire located on my 05 avalanche? Radio goes in and out all the time.

Replace the sender unit in the fuel tank.

was the electric brake control module professionaly installed? first check the ground behind the module and make sure it doesnt share the same one as your heater. too much current on a poor ground can cause both circuits to quit working.

Possibly. I recommend purchasing a manual from your local parts store or by going to alldatadiy.com and purchasing an online manual

it sounds like the relay in the module for the heated seats that could be going nuts due to a bad wiring connection. most likely a ground.

do a searh on GM fuel sender corrosion from sulfur in gasoline. You'l be surprised, your not alone

Check for fuses and fusible links that may be tripped or blown.

Next, check for grounding issues someplace easy to reach like the heated seat connectors.

Most dummy lights work by choosing the warning light path over the circuit path when the circuit path is higher resistance. Which may explain your dash warning lights.

So, what I am trying to say is...you are looking for a open ground in a big big place....like under the hood at one of the major fuse/relay/fusible link points.

Check it out. Good luck and be careful.

check the lil switch that'll be located on the latch anchor point or within a few inches of it.... odd is the switch is faulty

I assume you are looking for the wiring for the IAT because MAT sensors are no longer used..

here you go

black / white - PCM ground
pink - fused 12-volts
yellow - MAF signal
tan - IAT sensor signal
black - IAT sensor ground

manifold temp. sensors are no loner used.

I believe you are looking for the IAT "intake air temp sensor" which is part of the mass air flow sensor.

good luck

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