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How to Change 2003-2006 GM Stepper Motors in Instrument Panel Cluster
2019-03-21 | Categories: How To Repair | Tags: stepper motors



As we all know most of 2000 to 2007 GM cars and trucks have a known problem with speedometer and gauges. The problem wouldn’t show up until you drive for a while. Actually, GM used a bad batch of stepper motors that have a very high rate of failure. When a stepper motor fails, the gauge continues to work but it doesn’t reset to “zero” properly so the base point is different every time you start the car.  How to remove the instrument cluster and replace the stepper motors for your car?


This article is an attempt to bring the guide to change GM Stepper Motors in instrument panel cluster which available about the common problem of faulty gauges in 2003, 2004, 2005 and 2006 (plus some early model 2007) GM vehicles.


How Much Cost to Repair GM Stepper Motors ?

Dealerships want $400-$700 to replace the whole cluster, but you can replace just the motor within 1-2 hours. To purchase revised stepper motor online around 30$,special offer on HexAutoParts around 14.49$ for 6 Qty Stepper Motor. If you’re not comfortable doing that, there are plenty of companies that will do the repair for you. The labour cost around $60-100 you can choose.The current and only GM authorized replacement part number X27.168 (this replaces previous part numbers xc5.168, x15.168 and X25.168).


Tools Prepare:

Stepper Motor/s
Phillips Head Screwdriver
9/32 Socket
Soldering Iron
solder sucker


How to remove the instrument cluster?

1. To start, the cluster needs to be removed from the car. You will need to unplug all the wiring harnesses for lights, 4-wheel drive, and rear wipers.



2. You will now be able to access the gauge cluster. Remove the 4 screws holding the cluster in place and then unplug the wiring harness.

3. The cluster is constructed from 3 pieces which are held together with clips. Remove the front clear cover by unfastening the clips.



As you can see, the white discs are the stepper motors. There is one for each gauge,On the back of the circuit board, you can find the solder points for the stepper motors. There are four points for each motor. GM stepper motors are soldered into place directly onto the circuit board.  Replacement requires de-soldering of the faulty stepper motors for removal and soldering in of the new X27.168 replacement steppers.  Experience in electronics de-soldering and soldering is highly suggested if you attempt this repair as damage to the circuit board is common with at home repairs.


Specifically this article and the problems and solutions apply to vehicles(made 2003 to 2005)

Chevrolet Avalanche

Chevrolet Silverado

Chevrolet Suburban

Chevrolet Tahoe

Chevrolet SSR

Cadillac Escalade ESV

Cadillac Escalade EXT

GMC Sierra

Hummer H2

Cadillac Deville


Hope this article can help you guys fix Stepper Motor Problem, if like this article please share it with your friends.