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Posted on Jan 02, 2017
the t case control module is inside the vehical driver side its like a small computer that comunicates from the manual switch to the motor that engages 4wd thats on the t case. buy it install it and you have to get it reprogramed part is about 200-299 depends on where you shop and a reprogram is about 80 at a dealer
Posted on Dec 20, 2008
generally there is 2 hose going to the reservior , usually the small one it the inlet, take that off anbd put a blocked off hose in place. put into a bucket, have a few liters handy turn the car on and have some1 fill it keeping it full, warning it will come out fast. and have some1 turning the steering wheel lock to lock. untill clean, the turn car off
Posted on Jul 11, 2009
If the dash is removed you've saved about 9 10ths of the job endurance. Look around, what you believe to be, the perimeter of the heater box. I cannot, and no one else can, tell you exactly where the bolts and nuts that mount the heater box are. Therefore you must viually sixe the box and check outide in the engine compartment and inside under the dash for the mounting bolts.You'll want to start by removing the heater hoses. Then starting at the passenger side engine compartment look for a group of 10mm or 7/16ths nuts retaining the housing and remove them. Do the same inside. The housing is usually held together with screws or clips, it changes year to year. Keep a log or pix of the wires and cables and hoses(vacuum) that are connected to the housing for reassembly. You'll need to "roll" the box out from under the dash depending on how much of the dash has been removed. The core is easy to spot for is has two hoses sticking out, and, is encircled with clips or screws . Also make sure you remove the bracket around the two entry hoses if it has one. Thank you, Dana
Posted on Oct 04, 2009
About 45% of all transmission problems are due to a defective battery, its components and the charging system. Make sure you have the correct battery in the vehicle and inspect all items relating to the charging system and the battery. The vehicle should charge between 13,5 to 14.5 volts. The condition of the belts is part of this inspection. If all of this is A-ok then get a scanner and pull the codes in the PCM.
Remember once light is illuminated for a item that item no longer works. Once you've gotton to this point let me know and I'll walk you threw it. Hopefully its just a weak or incorrect battery or something along those lines. Good luck and keep me posted
Posted on Mar 09, 2010
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Nov 10, 2016 | 2003 GMC Sonoma
Ground Circuit for ground
Diagnostic enable circuit for an open or high resistance
Transfer case shift control switch connector
If more than one code is stored, the first code will blink, followed by a 3 second pause and then the second code will blink.
This sequence will continue until PIN 13 on the DLC is no longer grounded.
If the TCCM will not communicate the presence or absence of DTCs, test the above circuits in Self-Test Step 2. If the circuits are complete, then replace the TCCM. Refer to Transfer Case Shift Control Module Replacement .
Let me know if you have any codes , I have code definitions an procedures.
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