Question about 1999 GMC Yukon

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The control panel lights went dim and eventually the entire vehicle lost power. Eventually, the vehicle regained power with no problem. My mechanic cannot find the problem. 99 GMC Yukon with 103k miles

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I would double check the ground cable real good at the engine block.....

Posted on May 18, 2011

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Posted on Jan 02, 2017

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I have a 2002 Deville DTS which at first lost the turn signals, tachometer and speedometer. Now every other electrical component(ie feul, lights, power Windows, doors, as well as locks) all fail to work....


Do you know how to do automotive electrical testing ? Checking power and grounds . Hooking up a scan tool that can communicate with all the modules on the vehicle . The insturment cluster is a module too ,has a microprocessor inside . All the modules on the vehicle are connected through a serial data network . Class 2 . All it takes is one messed up module to short out the network an the vehicle will have all kind of electrical problems , like you won't believe . I see this all the time and the odds of you fixing this is probably not good . You have no idea of the complexity of these systems . So before you make the problem worst have the cadillac dealer check it out .
Body Control System Description and Operation
Table 1: 4-Wire Ignition Switch Table
The body control system consists of the following 3 modules:
• The Dash Integration Module (DIM)
• The Instrument Panel Module (IPM)
• The Rear Integration Module (RIM)
Each of the 3 body control modules integrate a number of functional systems under the control of a single module. Each module is connected to the Class 2 serial data circuit, many of the control functions are implemented by Class 2 messages.

Dash Integration Module (DIM)
The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
• Class 2 communication requiring DIM interaction.
• Control of exterior lamps.
• Control of front fog lights.
• Control of the headlights.
• Headlamps on with wiper input.
• Hood ajar switch input w/export.
• Horn relay control.
• Interior lamps incandescent dimming.
• Low side temperature for HVAC compressor.
• Power moding control over Class 2 serial data circuit.
• Reverse lockout solenoid control.
• Steering wheel controls input.
• Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the DIM. The PMM receives 4 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
• Accessory voltage
• Ignition 1 voltage
• Ignition 3 voltage
• Off/Run/Crank voltage

Aug 12, 2017 | Cadillac DeVille Cars & Trucks

1 Answer

2008 Toyotal Hylander Hybrid Limited won't start, display shows check VSC system, check SRS Air Bag system, check brake system, have vehicle service by Toyota Dealer immediately


you can try this take the battery off. neg wire and leave off for an hour or so then put back on. if when you but back on and every thing is fine then the system management controls all electrics has had a fault. this can be static discharge fault... while the battery is off give it a good charge.

Feb 04, 2014 | Cars & Trucks

1 Answer

I have lost all power to my vehicle while driving. What could this be?


It is possible that you had enough battery power to get started but once running you were essentially using the alternator and eventually it gave up. The reason why a boost did not work is that your battery probably is very dead

Jan 28, 2013 | 2001 Cadillac Sts

1 Answer

I have a 91 jeep Cherokee that doesn't start. When


If I understand your problem correctly, your battery is defective. Take your battery to a local auto parts store for a free load test. It sounds like one of the battery cells is going open under load.

May 17, 2011 | 1991 Jeep Cherokee Limited

1 Answer

Battery light indicator went on initially, and power to vehicle eventually died out; with engine sputtering.


If your battery light indicator went on it indicates that the battery is not charging because of either a dying battery or alternator or both!
With the red battery indicator on, the battery will eventually drain out (especially if the alternator is faulty) to the point where it will not provide the required power to the car electrical system ... thus causing it to 'sputter' and eventually die out - a sure sign it that you cannot restart the motor due to a weak of flat battery!
Hope it helps you understand the possible problem!

Oct 03, 2010 | 2003 Mitsubishi Montero Sport

1 Answer

After turning the truck off and pulling out the key the interior lights wont go off the dash board lights go out but not the over head lights we have checked everything on the light panel to make sure that...


If you truck has a convenience timer for the lights that may be the problem. When you exit the truck do your lights normally stay on and then slowly dim or go out? There will be a relay like unit plugged into the fuse panel marked light timer or something like that. Remove it and see, the interior lights should now probably not work at all. Just replace it with a new one or from a salvage yard.

Feb 08, 2010 | 1996 Jeep Grand Cherokee

2 Answers

98 Rodeo - ABS light on all the time, Relay Error?


I had a similare problem. Mechanic found a broken ABS wire connection in the rear left shock area. It did not solve the issue. I pulled out the ABS sensor from the rear diff and found a piece of metal megnetized to it. Removed it and things worked. New mystery about the metal though.....
Eventually I had to redo what the mechanic fixed with the wire connection and I replace the entire harness. Removed it entirely and soldered a cable in between.

Dec 19, 2009 | 1998 Isuzu Rodeo

1 Answer

While at idle, SOMETIMES my car jerks and feels like it will shut off.


I had that problem with another one of my vehicles. It ended up being the fuel pump. The problem was that I let the fuel level in my vehicle get to low, and that the fuel filter inside the pump had gotten debri from the bottom of the tank stuck in it and it was starving the vehicle for fuel. Eventually my vehicle wouldn't start. I had a tow truck driver tell me what the problem was. He banged the side of the fuel pump real hard and the vehicle started right up. I eventually had to replace the fuel pump.
Hope this helps.

Sep 17, 2008 | 2004 Saturn ION

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