Question about 2002 Chevrolet Tahoe

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Diagram of bottom of 2002 chevy tahoe

Had to unplug a module underneath to stop a noise and need to find out what it was that I unplugged because a light came on that said traction off.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2004 Chevy Tahoe stereo wiring diagram

BLACK-ground
RED-accessorie
YELLOW-power 12v
PURPLE-left rear
GREEN-right rear
WHITE-left front
GREY-right front
BLUE-REMOTE
and the other blue one is for remote antenna..

Posted on Dec 04, 2008

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SOURCE: I need a diagram for 1998 chevy tahoe fuel pump

Do you want a diagram, or do you just want to replace the pump?

Posted on Dec 17, 2008

shadtremonky
  • 353 Answers

SOURCE: take apart passenger side mirror chevrolet 2008 tahoe

get some eye protection
then pry the pieces out
also try pooring hot water on it to soften the glue

Posted on Jun 20, 2009

Molson02536
  • 3854 Answers

SOURCE: I have a 2002 Chevy Tahoe making a grinding noise

On the full size, the front actuator is electric, not vacuum.

When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown) is the 12v feed, and it conducts to the light blue wire (#900) to the actuator.
When shifted out of 4wd, the switch opens up and no voltage goes to the actuator.

Check voltage at the connector for the front actuator (at the front differential - it looks like a large bullet that threads into the front diff.) If it has 12 volts, the actuator is the problem. If it does not have 12 volts, check the transfer case switch and the power feed to the transfer case.

I'll assume it is the actuator, if the plug to the actuator is getting 12 volts when in 4wd.
The way this actuator works, is it is a sealed chamber that gets heated by voltage. When it heats, the pin in the end swells and pushes a shift fork in the front differential. The shift fork engages a spline on the passenger side of the differential, and boom! you have 4WD.

GM offered an upgrade to this actuator that is a motor instead of a heated device. However, it requires a small harness addition, a spacer, and a new actuator. It is about a $150 to $200 option.

Good luck. The actuator is usually the problem 90% of time but recheck all of the wire harness just to maker sure there is no short before replacing any parts. The actuator may not be fully engaged or disengaged and the fork to the spline may be what is causing the grinding.

88-UP C/K ACTUATOR UPGRADE
VEHICLE SERVICED: 1994 CHEVROLET FULL SIZE
PURPOSE: IMPROVE AXLE CONNECT ENGAGEMENT TIME AND
COMPONENT RELIABILITY.

SYMPTOMS: NO FRONT DRIVE AXLE ENGAGEMENT WHEN SHIFTED
INTO 4X4.

If the grinding is only when you apply the brakes, then it's going to be replacing the break pads and rotors and may be the brake caliper if it's damaged from the worn out brake pads. Please keep me posted, be glad to know you got your Tahoe running 100%

Posted on Jan 11, 2010

tripletauto
  • 1450 Answers

SOURCE: i have a 2002 Chevy Tahoe. for the past 6 months

without hearing exact noise it is hard to diagnose. these vehicles had a normal cold start knocking noise due to the low friction rings used allowed piston some extra movement. when carbon builds up on pistons it gets worse will go away after about a minute running. it does not affect life of engine or performance. i think this may be noise you hear. or possible it is a lifter leaking down and taking a while to pump up

Posted on May 24, 2010

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