Tip & How-To about Cars & Trucks

Purchasing from an ad.

If you are purchasing a vehicle from an ad, and calling and setting a time to see it, I use a 5/30 rule.  Call and tell the person you'll be there in 30 min., but get there in less than 5.  If there is something he doesn't want you to see, like having to ad coolant, power steering fluid, brake fluid, etc.  He'll already be out there doing it.  Same for jump starting to hide a bad battery, or an engine that rattles cold.  Or airing up tires, or a whole list of things.  Get there early and see if he's working on something.  This could save many headaches down the road.

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what to replace if the speedometer on suzuki grand vitara doesn't work?


Hi Yrivera, Take the vehicle for a diagnostic scan. I think you'll find that one or more of the speed sensors are defective. You may have noticed that the ABS light is also on. If the vehicle is an older model (you didn't tell us much about the car) it may be the gearbox sender unit or on a vehicle which is older still, a broken cable. Regards John

Jun 07, 2012 | Suzuki Grand Vitara Cars & Trucks

2 Answers

obd2 p0700


Hi John:
DTC P0700 - Transmission Control System Malfunction
Many vehicles have a control module for the automatic transmission called a transmission control module (TCM). The engine control module (ECM) communicates with the TCM to monitor the automatic transmission for faults.

If the TCM detects a fault in the automatic transmission and sets a transmission related fault code, the ECM is informed of this also and sets a P0700 in the ECM memory.

This illuminates the Malfunction Indicator Lamp (MIL) to let the driver know there is a problem. If this code is present and the MIL (Malfunction Indicator Lamp) is illuminated that basically means there is at least one transmission code set in the TCM's memory. P0700 is an informational code only. It doesn't point to a direct fault in the engine, only a general fault in the transmission. More diagnosis is necessary to identify what the transmission fault is. This requires a scan tool that will communicate with the transmission module.

Symptoms of a P0700 DTC may include:
Malfunction Indicator Lamp (MIL) illumination
The transmission may exhibit drivability problems like slipping, etc.

More often then not, the cause of this code is that there is a transmission problem of some kind. The TCM detected the problem and set a code. P0700 means that a fault code is stored in the TCM. However this doesn't rule out the possibility of a failed PCM or TCM (unlikely).

Possible Solutions:
For a P0700 the only real solution is to acquire a scan tool that will communicate with the transmission control module. Extracting this code from the TCM will be the first step in repairing the fault in the transmission.

If the TCM compatible scan tool will not communicate with the Transmission Control Module then that is a good indication that there may be a fault with the TCM itself.

Fee free to contact us if need additional details. Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Dec 06, 2011 | 2001 Daewoo Leganza

1 Answer

Does my Yukon have remote start?


There is NO WAY that anyone online can tell you what aftermarket equipment has been installed on your vehicle or where any of the components for such equipment would be located. It is hard enough to figure out where some of the factory installed components are located on some vehicles.

Your best bet would be to take the vehicle to an experieced auto repair technician. There is no substitute for an evaluation by someone who is familiar with the vehicle and can give it a first-hand look.

Nov 22, 2011 | 2003 GMC Yukon XL

4 Answers

How often should the transmission fluid be changed in a 2009 Sonata?


It's recommended to do it every 30k miles. Do it every 20k.

Jan 19, 2010 | 2009 Hyundai Sonata

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