Question about 1998 GMC Sierra

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Had transmission replaced recently GMCsierra1998 1500v-6

My rpm gage&speedometer indecator completely zero out while driving?please help?

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Likely your problem is an easy one to correct. Check wiring from speed sensor. More than likely either the plug was not connected well or the wiring was not secured and has burned onto an exhaust pipe. Make repair where you find it and if there is no damage from shorting, you should be back in business.

Posted on Mar 02, 2009

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1 Answer

Why does speedometer read 65, when I'm only doing about 35?


Circuit/System Verification
Important: If the suspect gage is the speedometer, the drive wheels of the vehicle must be raised and the transmission must be placed in drive or first gear.
  1. Ignition ON, with the scan tool, perform the IPC Gage Sweep Test in the IPC Output Controls. Verify that all gage dials move from minimum to the maximum value and back to the gage minimum value.
  2. ?‡'
    If the gage does not perform the IPC Gage Sweep Test, replace the IPC.

  3. Start the engine, with the vehicle drive wheels raised and place the transmission in drive or first gear. Verify that the speedometer value matches the scan tool Vehicle Speed parameter in the ECM/PCM Engine Data List.
?‡'
If the speedometer is incorrect, test or replace the IPC.

Sep 08, 2015 | 2008 Pontiac Grand Prix

1 Answer

Why is my speedometer droping while accelerating


You have a serious problem that needs to be check out buy a tranmission shop be for it ouits on you completely.

Nov 29, 2012 | Cars & Trucks

1 Answer

I have a 2001 ford escape 2.0 L 4 Cyl with 5 speed Manual Transmission. Recently had the clutch replaced with in a week the speedometer would be eratic but not all the time then after about a month on...


Definitely not an expert here, but exactly the same symptoms after a clutch replacement. I found one of the wires going to the connector on the harness side of the Vehicle Speed Sensor pulled in two. Can only surmise that during the clutch installation this connector wasn't disconnected and during movement of the transmission to get to the clutch was put under tension causing the failure. I haven't confirmed the solution yet, but pretty sure I'm on the right track.

Sep 12, 2012 | 2001 Ford Escape

1 Answer

My rpm gage is not working, my speedometer is not working, my gas gage is not working, and my oil gage is not working, and my temperature gage is not working pretty much when i start up my car and drive it...


I'd wager that the fuse that controls the gauges is shot, or one of the internal connectors got unplugged (Fuse sounds more likely). Radio, Lights, and Turn Lamps are usually on seperate circuits.

Dec 28, 2010 | Ford Explorer Cars & Trucks

1 Answer

The speedometer stops working when driving what is the problem all the other gages work just when you drive it will just stop moving.


all chevy made in that year have a speedometer issue i have a 2004 chevy that has the same issue the only way to fix it is to replace the dash insturment panel some of them the speedometer goes and the rest of the gages work fine or try replace the speed sensor located at the front of the transmission on the bottom

Sep 13, 2009 | 2004 Chevrolet Monte Carlo

1 Answer

I have a 1991 buick park avenue ultra


Speedometer or fuel gage?

If speedometer which is bouncing around, it is likely a bad ground near where the speed sensor wire harness (which connects the speed sensor to the rest of the "network") exits the transmission housing. It's at the very back of the transmission (you have a 4T60E trans) to the left of where the right side half-shaft leaves the trans housing. Just look for damaged wires. If none, replace the speed sensor for $50-60.

If it is the fuel gage, the sensor is probably not "zeroed"--it's reading wrong, too high, and if it were to start at true "empty", it would read right. Thus, the gage is always reading a little high (maybe a 1/8-1/10th of a tank too high?). This isn't a problem until to stop, start, or turn quickly and cause the fule to slosh around in the tank and starve the in-tank pickup which sends fuel to the engine.

If it is the fuel gage, you should simply put as much fuel in as you can and see if the needle goes far above "F". If it does, note how far it went and then practice filling the tank when the needle is that same distance above "E".

Hope this helps.

Sep 15, 2008 | 1991 Buick Park Avenue

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