Question about 1999 Chevrolet Silverado 1500

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I have 1999 silverado check engine light stays on

I have 1999 silverado small V8 check engine light stays on disconnected the battery when i reconnected the speedometor needle was stuck up over 100 per hr and check engine light stayed on. at the same time the transmission gets hot and when shift from 1st to 2nd shifts real ruff.

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Low power. Battery life is possibly finished. They have limited life.

Posted on Feb 02, 2018

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Do some research on the speed sensor sounds like it may have shorted.

Posted on Feb 02, 2018

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If you have an autozone in your area, take it there. Ask them to plug in the obd unit and diagnose your issue. They can give you a printout of what the issue the obd is seeing, can sell you parts, and even show you how to replace whatever.

Semper Fi,
Z

Posted on Feb 02, 2018

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Posted on Jan 02, 2017

SOURCE: Automatic Transmission shifts late and rough after warm

If it has over 60000 miles it may need a transmission service, which includes a filter and fluid change, fluid may look fine but if filter is clogged and not picking up fluid fast enough when u give it gas the pump spins faster and forces fluid thru to shift, more fluid is needed to shift into higher gear.than to drive

Posted on Jan 06, 2009

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SOURCE: 1998 chevy k1500 4x4 4

first of all your truck is already in first gear when your going down the road....lol

Posted on Mar 06, 2009

csmock132
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SOURCE: Transmission won't shift!

Does it just not shift up to 3rd or when it shifts to 3rd it is just like neutral?

Posted on Mar 06, 2009

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SOURCE: 1999 chevrolet silverado 1500 Z71 5.3 engine 4wd

change the fluid and filter if u havent already if that dont fix problem have trans. checked out u didnt say how many miles are on the vehicle?

Posted on Aug 11, 2009

  • 151 Answers

SOURCE: 1995 Chevy 1500 Z71...transmission only shifts

It sounds like a vacumm modulator issue.

Posted on Apr 13, 2010

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99 Silverado engine light on cannot get a code from odb reader


Does the code reader power up ? Does a message no communication show on the screen ? Is there B+ voltage at pin 16 in the DLC ? If all that is good try a auto parts store ,they check codes for free .

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Jan 20, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

Service Soon light is on.. what does that mean?


In most cases the light will go out by itself once the problem is resolved that made the light illuminate. You can RESET the light by removing and re-installing the fuse(s) marked as ECM in the fuse panel or by disconnecting the battery for several seconds.

If the light continues to illuminate, You will need to extract the computer codes from the computer via the factory specifications to see what code(s) are being stored in the computer.

NOTE: Disconnecting the battery will cause the engine to run a little erratic until you drive it for several miles so the computer can re-learn it's proper settings.

How to Reset Service Light
Chevrolet Suburban 2000-01
GMC Yukon XL, Chevrolet Silverado,GMC Trucks Sierra 1999-00
Turn the ignition key to the RUN position. Fully push and release the accelerator pedal 3 times within 5 seconds. If the CHANGE OIL SOON light flashes 2 times, the system is reset. However, if the light comes on and stays on for 5 seconds, the system did not reset. Repeat the procedure if the system does not reset.

Let us know (remember rated this help). Good luck.

Jan 14, 2010 | 1999 Chevrolet Silverado 1500

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What engine do I have?


I'ts a chevy V8 350 engine. lol

Oct 04, 2009 | 1999 Chevrolet Silverado 1500

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Evap vent solenoid


Disconnecting the battery might reset the check engine light on some cars. However, instead of doing so, I'd recommend to bring your car to a dealer or a mechanic for proper diagnostic, and here is why:
- not all cars will clear the code after disconnecting the battery
- often, the problem may be actually covered by the warranty and repaired free of charge by your dealer. For example, if you have the code P0420 - Catalyst System Efficiency Below Threshold it's very possible that your catalytic converter is still covered by the original emission warranty and might be replaced free of charge (would cost you close to $1000 otherwise).
- some problems, if not repaired in time may cause a serious damage and more costly repair.
- disconnecting the battery will cause basic settings of the vehicle's computer to be erased (e.g. idle settings, fuel trim settings, transmission shift points, etc.)
- the Readiness code will be erased, which may prevent your car from completing an emissions test. (Readiness code is an indication that certain emission control components of your car have been self-tested)
- the radio, if code-protected, may be locked after disconnecting the battery
- the "check engine" light will come back anyway if the problem still persists. Thank you.

Sep 18, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Check Engine light stays on /engine idles to fast


YOU MUST GET THE COMPUTER CODES FIRST TO SEE WHAT THE AREA TOO LOOK FOR COULD BE SIMPLE LIKE A VACUME HOSE/ INTAKE LEAK/ BAD MASS AIR METER . LOTS OF STUFF GO TO PARTS HOUSE MOST OF THEM OFFER FREE SCANS THEN REPOST YOUR CODES THEN WE CAN HELP

Aug 24, 2009 | 1999 Dodge Durango

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GMC Jimmy 1999


disconnect the negative cable but leave the positive cable on
if this does not work then it will have to be scanned

Nov 10, 2008 | 1999 GMC Jimmy

1 Answer

Vehicle


This image applies to engines with A.I.R. system
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This image is for vehicles without A.I.R.
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Hope this helps.

Nov 09, 2008 | 1999 Chevrolet Silverado 1500

6 Answers

1997 Chevy Silverado problem


hi, ok I'm sure you tried alot of solutions, I think the ECU has governed the engine must have sensed a previous problem or its just a malfunction from a sensor, important sensor to check is the 'engine knock sensor' try disconnecting and reconnecting it or test with multimeter and compare all readings with a new engine knock sensor or disconnect and reconnect battery, the other way might be to reset the engine managment system, this however I dont know but your dealer can do this for you.

May 25, 2008 | 1999 Chevrolet Silverado 1500

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