Question about 2003 GMC Sonoma Extended Cab

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4WD (w/ electronic transfer case), 5-speed manual tranny, has 79K+ miles, yesterday service engine light came on, today truck whined when starting, then cut off, would not restart. Fuel cap is new, same fuel as always, serpentine belt seems fine, what else could cause such quick problem (engine turns over, starts briefly, then conks out), no previous problem...help

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 1999 Suburban 4WD, Noise from the transfer case?

Your problem is similiar to mine . the web-site has been helpful. $2000.00 sounds way to much for repair on that vehicle with such high mileage. I went to a dismantler and bought a used transfer case for under $350.00. Did the labor myself with a little help. It's not too difficult if you have a some diy experience or ability. As your working on it stay with the web-site for install hints or go to autozone.com for repair diagrams.
Good luck have a good day.

Posted on Jan 07, 2009

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SOURCE: My 96 Suburban will not start.

If you have a 1996 Suburban that will not start. The first place I would start is take the screws out from the cover under the ignition switch and replace the box with all the wires. That box when bad will cause all kinds of things to happen...Truck not to start. Shifts darn hard from 1st to 2nd gear. Wipers to not work at time or the wipers stop and go. You will not get the impulses to even register on a tester. After hooking up to a computer I could not get anything to register on the tester/computer as I was turning over the motor with the ignition switch...Next I decided to turn over the motor with the ignition switch and wacked the bottom of the stiring column and the puter screen cam to life....Replaced the box and never had a problum in 4 years and my truck transmision dont slam gears any more.
Hope this helps.
Sincerly
Troy H
troylynxtn@yahoo.com

Posted on May 15, 2009

Molson02536
  • 3854 Answers

SOURCE: GMC Sierra "Service 4WD" message

You should be fine to drive it home, as long as you don't drive it like that all year. There are a few things that activate the 4WD and one of the components has a failure and needs to be addressed. Good luck and hope this helps.

Posted on Jun 15, 2009

morse008
  • 1111 Answers

SOURCE: 1995 GMC Sierra 5.7 liter stalls and is hard

even though parts are new they also come with defects so it sounds as if when you turn the key you hear it working and other times not at all hmmm connections are tight ? could be faulty fuel pump or relay .

Posted on Aug 24, 2009

  • 1 Answer

SOURCE: 2004 GMC Sierra 1500 4wd. Auto transfer case light issue

I have the same problem. It is intermittent and sometimes shows up with service transmission message. To get rid of it just put the truck in park, press the 2 high button and shift into drive while it is still flashing. I will worry about it more when it blows up. You can drive with the vehicle showing the solid neutral and it seems to make no difference. It has to be a wake up problem between the control modules. It only happens on start up.

Posted on Sep 06, 2009

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2002 ford ranger - Where is the 4x4 actuator located


On the transfer case
Transfer Case - Electronic Shift
The four-wheel drive electronic shift-on-the-fly feature electrically shifts the vehicle transfer case between 2WD, 4WD HIGH, and 4WD LOW. The system mode is selected by the operator through the mode select switch (MSS) on the instrument panel. The operator is informed which mode the system is in by two instrument cluster indicators: one for 4WD HIGH which appears as 4WD, and one for 4WD LOW, which appears as 4WD LOW. Shifts into 4WD HIGH can be made at any speed. When shifting into 4WD HIGH with the vehicle stationary, tooth blockage may occur preventing shift completion. When the vehicle is driven above 8 km/h (5 mph) the shift will complete. When shifting in or out of 4WD LOW, the four-wheel drive (4WD) control module requires that the vehicle speed be less than 5 km/h (3 mph), the brake pedal be applied, and the transmission be in NEUTRAL (automatic transmission) or the clutch pedal be depressed (manual transmission).
The gearmotor encoder assembly is mounted externally on the transfer case. It drives a rotary cam which moves the mode fork and range fork within the transfer case between the 4WD HIGH, 4WD LOW, and 2WD range positions.
The four-wheel drive (4WD) control module controls the gearmotor encoder assembly that shifts between 4WD HIGH, 4WD LOW, and 2WD modes.

Mar 17, 2017 | Ford Cars & Trucks

2 Answers

Where is the speed sensors located on a 2001 Tahoe


Vehicle Speed Sensor (VSS) - Allison
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - Allison
Automatic Transmission Inline Harness Connector End View in Automatic Transmission - Allison
Vehicle Speed Sensor (VSS) - 4L60-E
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - 4L60-E
Automatic Transmission Related Connector End Views in Automatic Transmission - 4L60-E
Vehicle Speed Sensor (VSS) - 4L80-E
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - 4L80-E
Automatic Transmission Related Connector End Views in Automatic Transmission - 4L80-E
Vehicle Speed Sensor (VSS) - Transfer Case
On the top left side of the transfer case
Transfer Case Control Component Views in Transfer Case - NVG 246 - NP8 (Two Speed Automatic)
Transfer Case Control Connector End Views in Transfer Case - NVG 246 - NP8 (Two Speed Automatic)
Vehicle Speed Sensor (VSS) Adapter (4WD Only) - 4.8L,5.3L,6.0L
On the left side of the transmission
Engine Controls Component Views in Engine Controls - 4.8L,5.3L,6.0L
Engine Controls Connector End Views in Engine Controls - 4.8L,5.3L,6.0L
Vehicle Speed Sensor (VSS) Adapter (4WD Only) - 8.1L
On the left side of the transmission

Mar 07, 2016 | Cars & Trucks

1 Answer

Where is the speed sensor located on my 2008 Wrangler x 3.8 5-speed manual trans?


why? got DTC errors? please post them. just curious , me too.
5speed stick, there is no such transmission here. ok JK08 ,usa.
4wd?

mine is 6 speed stick, the 5speed option is the automatic.
6sp is DEH trans.or NSG 370
with NV241 transfer case.
my wild guess is its really a 6 speed manual, with 4wd.
am I correct>?
and is USA, not an Export.
my fsm does not cover, 6 speed VSS, oops.
i wonder if the VSS on the 6peed, uses speed from the ABS.
the automatic vss is on the left side of the tranny case. and input speed and engine rpm speed. but that is A/T.

M/T as your post clearly states is another matter.
the parts list for the 370 box shows no sensors at all ,just 1 reverse switch, then i look at the car 241 transfer case then the parts list.
it too , dont have a sensor. only , 4wd switch and is not a speed sensor.
so that leaves 3 more,
front axle, no.
rear axle ,no (only a lock up switch option)
leaving what, ABS.
must be the genius at JEEP said, one day, well gee abs knows speed, why not just get that for free on all 4speeds.

the A/T needs the sensors to shift right, but not any manual ever.

The electric drawings for jeep jk08 show no speed sensors at all on the M/T. (dedicated to forward speed via the transmission side)

see here a nice JK08 full parts list in PDF.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

Apr 10, 2015 | 2008 Jeep Wrangler

1 Answer

99 silverado 4wd switch lit up like Xmas tree was in 2whl now? 4wd service popped in for a second then all lights indicator lights went out. Disconnected battery a few times and light reset and was ab


4wd switch lit up , DTC'S - diagnostic trouble codes stored in the 4X4 control module . Which 4X4 system ?
Transfer Case - NVG 246-NP8 (Two Speed Automatic)
Transfer Case - NVG 261-NP2 (Two Speed Manual)

DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

Nov 12, 2017 | 1999 Chevrolet Silverado 1500

1 Answer

How do I turn 4wd on?


    • 1 Start your Dodge truck's engine.
    • 2 Turn the electronic transfer case from "2WD" to "4WD Lock" to engage the high range 4WD, if the dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" to "4H." The electronic transfer case is located on the instrument panel and is marked with "2WD," "4WD Lock" and 4WD Low." The lever-equipped transfer case is located to the right of your leg and is marked with "2H," "4H" and "4L."
    • 3 Shift the transmission into "Neutral" while the vehicle is either stopped or rolling at 2 to 3 mph to begin engaging in the low range 4WD. Turn the electronic transfer case to "4WD Low," if the Dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" or "4H" to "4L."
    Tips & Warnings
    • Indicator lights will come on and alert you that your vehicle is in either the high or low range of 4WD.
    • Do not engage in the low range of 4WD drive if the transmission is in gear; you must shift to "Neutral" first.
    • Many Dodge trucks allow you to shift from 2-wheel drive to the high range of 4WD at up to 55 mph--consult your truck's manual to ensure that this is possible. Do not exceed 55 mph while engaged in the high range of 4WD. Do not exceed 25 mph while engaged in the low range of 4WD.
    • Do not engage in 4WD unless you are on slipper or rocky roads.

Sep 02, 2011 | 2005 Dodge Dakota

1 Answer

"Service 4WD" dash light comes


Sounds like a defective electronic shift motor for the transfer case. The diff and t-case fluids should be replaced every 30K but will never turn on serv 4wd light.

Feb 20, 2011 | Dodge Dakota Cars & Trucks

2 Answers

Fluid capacities and fluid specs


2000 TOYOTA TACOMA 2.7L 4-cyl Engine Code 3RZ-FE

Engine Oil Grade 1......API* All TEMPS......5W-30 Optional ..10W-30
Engine, 2WD, with filter..........5.5 liters
Engine, 4WD, with filter..........5.4 liters

Manual Transmission,......GL-5/ GL-4 All TEMPS......75W-90
Automatic Transmission,A340E......AF3 / A43D......AF3

Differential, Front/ Rear W/ ADRD......GL-5 ALL TEMPS......75W-90
Differential, Front Less ADRD......GL-5 ALL TEMPS......80W-90

Transfer Case,......GL-4/GL-5 ALL TEMPS......75W-90 Gear oil.

Capacity:
Cooling System, Initial Fill..........8.5 liters
Automatic Transmission, A340E Initial Fill..........1.6 liters
Automatic Transmission, A340F Initial Fill..........2 liters
Automatic Transmission, A43D Initial Fill..........2.4 liters
Automatic Transmission, Total Fill
4 speed A340E..........7.2 liters
4 speed A340F..........10.1 liters
4 speed A43D..........6.5 liters
Manual Transmission, ..........2.5 liters
Differential, With ADRD Front..........1.2 liters
Differential, Without ADRD Front..........1.1 liters
Differential, 2WD V6 Rear..........2.6 liters
Differential, 4WD Extra Long Rear..........2.5 liters
Differential, Short WB With LSD Rear..........2.7 liters
Differential, Short WB Without LS Rear..........2.6 liters
Transfer Case, Electronic..........1.2 liters
Transfer Case, STD..........1 liters


Feb 09, 2010 | 2000 Toyota Tacoma PreRunner

1 Answer

4wd lights flashing


I know the 4wd lights flash a code and I have replaced a transfer case control module on one before but as for the clunk and engine dying maybe it is a combination of more than one problem

Jan 06, 2009 | 1998 Ford Explorer

2 Answers

91 Jeep Wrangler Sahara, 2WD won't engage, 4WD is fine!


It sounds like your driveline to the rear wheels is broken. Could be transfer case output shaft to the rear wheels has broken. Try disconnecting the rear drive shaft and see if you can turn it by hand with the transfer case engaged in 2WD. If you can turn it while the Sahara is in gear, the output shaft is no longer connected to the engine for some reason.

Dec 29, 2008 | 1991 Jeep Wrangler

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