What causes a c0327 4WD trouble code?

A C0327 4WD trouble code relates to the transfer case shift motor and can caused by any of the following: What is a transfer case motor? 4HI and 4LO. The motor is equipped with an analog sensor that signals back to the transfer case shift control module (TCCM) whether it has actually completed the commanded shift properly.

How to check for a 4WD trouble code?

The following circuit tests apply to these vehicles: Disconnect the electrical connector at the transfer case. Using a digital voltmeter set to the 12-volt scale, with the Key in the RUN position check for the 5-volt reference signal on the light green/black wire. Check the black/white wire for good ground.

What does DTC stand for on an OBD-2?

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. A P0308 code means that the the car’s computer has detected that one of the engine’s cylinders is not firing properly.

When do you know when your 4×4 has failed?

You will probably know when your 4×4 has failed when you needed it in the mud pit. Mine, for instance, failed by not doing anything when I hit the 4HI button. However, it would go into 4LO. The lights on the 4×4 indicator (switch) will flash in a pattern, there are only 4 codes, one flash is code one, 2 flashes is a code 2, and so on…

What causes the dtc-c0321 diagnostic trouble code?

DTC-C0321: Motor A or B Circuit Failure Description: DTC-C0321 will be set when the Transfer Case Control Module (TCCM) fi nds a fault in an open lock solenoid, open motor lock control, or an open motor feed. This will cause the 4WD to be disabled and will turn on the “Service 4WD” trouble light. What causes DTC-C0321: 1.

What does the 4WD service light c0379 code mean?

If this concern is accompanied by an illuminated “Service 4WD” light, and a DTC C0379, during a cold weather start up, the following information may apply. The front drive axle actuator assembly engages the front axle in response to commands from the Transfer Case Control Module (TCCM).

Why do I get code c0379 on my Silverado Sierra?

When the TCCM grounds the light blue wire the actuator locks the axle. If either circuit is open, grounded, or shorted to voltage you will get that code. Fast test: Key ON engine OFF and 2WD selected use a meter from battery ground to test for 12V at the brown wire, then the light blue wire.

What does DTC c0321 08 transfer case lock signal invalid?

DTC C0321 08: Transfer Case Lock Circuit Signal Invalid The transfer case shift control module controls the transfer case lock solenoid. The transfer case lock solenoid is released by being energized. This is accomplished by grounding the lock solenoid control circuit during gears shifts, and in the AUTO 4WD mode.

Where is DTC c0327 stored on a Chevy Silverado?

29,000 miles (12/29/06) – code C0327 stored. followed TSB to ground G110 on frame. Cleaned ground and reinstalled. cleared codes and rechecked all connections at TCCM. all ok. 44,700 miles (10/22/07) – no failure codes stored. needs re-programmed. re-programmed transfer case module. 55,300 miles (8/15/08) – found DTC C0327 in TCM.

What’s the failure code on a Chevy Silverado?

How does the TCCM work on a c0327 4WD?

The transfer case motor mounts to the transfer case and engages with the transfer case sector shaft. The TCCM provides a 5-volt reference signal and a low reference circuit (like a ground but with a set voltage drop).

What’s the c0327 code on my truck?

It’s throwing a c0327 code. I bought this truck with the problem and I can’t figure it out. So this is what happens when I start my truck the lights on the 4wd all light up then they all go out then the 4wd service light comes on. So I replaced the switch on the dash, the TCCM (transfer case shift module) and transfer case shift motor.

What’s the trouble code on a Gm K truck?

The problem shows up in “K” style trucks equipped with 246 and 263 transfer cases and results in trouble codes C0327, C0327, P0836, P0500. In “T” style trucks with 126 and 226 transfer cases, you may find just trouble code C0327. GM recommends following these diagnostic procedures:

Why does my GMC 1500 have no 4 wheel drive?

In this video we have a look at 2004 GMC 1500 5.3 that came in with a customer complaint of “no four wheel drive.” The shop said it has a code C0327 “Encoder Circuit Malfunction” stored in it. They also said that the encoder motor was replaced along with the transfer case AND the vehicle had been taken to the dealer in an attempt to repair it.

Is the encoder motor sensor issue on Chevy Silverado?

The encoder motor sensor issue seems to afflict 2004-2005s. These conclusions are all based only on anecdotal reports from forum posters, like us, not on scientifically reduced statistical data from GM.

What does the p0327 Chevrolet engine code mean?

Problems with the knock sensor will not cause an engine performance problem. Replacing the knock sensor usually takes care of the problem. The cost to diagnose the P0327 CHEVROLET code is 1.0 hour of labor.

How does the encoder motor on a GM Truck work?

The encoder motor keeps track of the proper position using the encoder feedback. The encoder is just a variable resistor. It can get worn and give bad readings to the TCCM. Here is a nice write-up on replacing the encoder (sensor wheel) inside the encoder motor.

What to do when DTC c0327 4WD Lite sets?

If the encoder Signal Voltage is going low, check the 5 Volt Reference and Encoder Signal circuits for an open or high resistance. Check the C151 connector on the left fenderwell for possible poor connection. If DTC C0327 sets when making a shift into 4 HIGH only or during a slip event in auto 4WD, inspect the Transfer Case fluid for contamination.

Can a DTC c0327 be duplicated in any position?

If DTC C0327 can be duplicated in any position, check the scan tool data for the Encoder Signal Voltage going high or low. If the Encoder Signal Voltage is going high, check the Encoder Low Reference circuit for an open or high resistance.

How to service a 4WD Lite on a c0327?

Pay particular attention to Connector C1, pin A7 at the TCCM. Also check the TCCM, body, chassis and engine ground. Remove and clean any material that may cause high resistance in the circuit i.e. paint, undercoating, etc. Ensure these grounds are secure and perform a voltage drop test and record the readings for these grounds.

Is there a problem with GM service 4WD Lite?

GM has issued a technical service bulletin (TSB) 3061F to address problem with Service 4WD lite on C0327 C0327 P0836 P0500 on the following vehilces The problem shows up in “K” style trucks equipped with 246 and 263 transfer cases and results in trouble codes C0327, C0327, P0836, P0500.

Is there a c0327 code on my Sierra 1500?

I have a 2004 Sierra 1500 4wd and I am having problems with the 4wd. It’s throwing a c0327 code. I bought this truck with the problem and I can’t figure it out.