Top 10 1999 Chevrolet Silverado 1500 Questions & Answers

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where is fuel pump relay for 2003 chevy silverado

where is fuel pump relay for 2003 chevy silverado location?

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Answer

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Hi, it's in the middle of the underhood fuse box. Please let me know if you have more questions, and thanks for using FixYa.

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Posted on Jan 23, 2011

Question

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NO Heat in 1999 CHevy SIlverado

I have no heat in my truck. Blows plenty of air but no hot air. I have changed the thermostat but this did not help. I cannot locate any valve on the heater lines going into the cab. Any ideas?

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Answer

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flush the heater out with a hose.   the fastest and cheapest.   if that dosen't work then replace the Air blend actuator motor.  $59.99 at Auto Zone  part    # 604-101

Posted on Feb 27, 2009

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can not lower spare tire

can not lower spare tire

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Answer

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intl190 is the man! This solution solved my problem. I followed his instructions and used a super long screwdriver to push the j-hook in. My latch on a 2003 Tahoe works fine now after a thorough cleaning. I agree that regular cleaning will keep it functional. Thanks again, intl190...you save me at least a couple hundred dollars that the tire store wanted to replace the latch, etc (which is a special order item).

Posted on Jul 01, 2010

Question

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5.3 L Missing and Rough Idle Intermittently

I have changed Spark Plugs,Wires ,Coil Packs, and removed Fuel Injectors and soaked overnight. Engine code is a P0304. Misfire Cylinder #4. Most of the time around town is alright. When i put it on highway, it will surge like its cutting off and then pick right back up and be fine. Fuel Presure is 55 psi. Fuel Pressure Regulator is good. I do have faulty gas gauge but I replace fuel pump about 2 years ago. Sometimes when sitting at stop light you can feel motor lope a little and RPM's fall to about 300. I am running out of ideas. I swapped fuel injector on 4 cyclinder thinking the misfire might follow injector for trouble shooting. So far no codes.....

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i have a 2001 chevy z-71 5.3L. I keep getting a random/multiple misfire code for cylinder 1 . I have replaced plugs, wires, coil pack(only on #1 cylinder)., and fuel pump. I still keep getting the cylinder 1 misfire code. I put truck on a scanner and watched the cylinders. # 1 misfires at idle but quickly stops misfiring at around 1000 rpms. you can here the engine miss at idle but truck runs great on road . anyone else ever had this problem?

Posted on Jun 09, 2010

Question

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Humming noise in front end of truck

Upon reaching a speed of 25 mph I hear a humming/growling noise from the drivers side front end of my 1999 Silverado 4 X 4. Noise gets louder with increased speed. Replacement of the front axle hub did not help. Fluid level is OK in front differential.

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Answer

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I'm having the same problem with my 2006 Chevy 2500 duramax...The humming starts at 25mph and then gets less prominent and then at 50mph it gets more prominent and louder, then at 60mph you can hardly hear it.....I did notice a little bit of leakage where the front axel meets the from diff on the drivers side.
Any suggestions?

Posted on Aug 09, 2008

Question

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Wiring 7 pin trailer plug for 1998 C1500 pickup truck Z71

At the back of the truck I have white, blue, and orange wire. Can you tell me which one goes to AUX, Brake control?

Also does chevy sell a wiring harness to plug in to the truck so I can wire up the brake controller?

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Answer

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Here is some information that I find useful when wiring trailer connectors, and the brake controller should be wired into the vehicles wiring according to the instructions that came with the brake controller and that identifies each wire from the brake controller.

Be sure that you solder all connections well for the best operation, and you should use 10 or 12 ga. wire for the Pos. (+) connection, and the ground or Neg. (-) connection, and you should run both wires all the way out to the battery, and about one foot from the battery on the Pos. (+) wire to the battery, make sure that you use a 20 or 30 amp Circuit Breaker and Do Not Use A Fuse.

The rest of these diagrams should help you to get your trailer properly wired up.





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Posted on May 15, 2010

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abs codes co281 & co265

parking brake & abs lights come on . 1999 chevy silverado abs codes co281 & co265

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the first of the two codes is for the brake light switch, the one that is under the dash attached to the brake rod and brake peddle. Not much to diag on that one, if its bad it's bad, and when it sets the code that means it's bad.
The second one is for the abs modual, it's under the truck on the drivers side. It is bolted to the top of the thing that has all of the brake lines going to it. MOST all of the time that code is set the modual is bad. It can be a little hard to get the bolts out they are torqs 20 or 25(i'm getting old). There are four of them holding down the modual. There are also a couple of connectors going to it. And some of the time it will blow the fuse for the abs under the hood(its in the underhood fues block). Make sure to clean off the modual before you pull it out. You don't want dirt getting in the solinoids for the BPMV(that's the thing it's bolted to).

Posted on Oct 20, 2009

Question

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99 Chevy Z71 heater core inlet hose male fitting broke

There are 2 hoses inlet/outlet into the heater core from the engine side at the firewall, and the hose on the right side broke off with the male plastic nozzle type fitting still in the hose. Can I replace that male nozzle fitting, I think it may be an Inlet or Outlet Nozzle Adapter? Do I need any special tools.

I really appreciate any help or suggestions.

Thank you,

Roxanne

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Answer

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This is an easy $7.00 fix. Go to your local auto parts store and get a GM Heater Hose Fitting. I went to NAPA, part #730-5631. Cut of the old fiting with a hack saw blade, being careful not to damage the pipe from the heater core, put the new one on. Total time takes less than 10 minutes, make sure you fill your coolant resevoir.

Posted on Nov 22, 2009

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99 chevy silverado 1500 running lights.....

Is there anyway to turn off running light on my 99 silverado 1500? I know if you apply parking brake before starting they won't come on, but when you release brake they come on!

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Answer

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Remove the fuse! The fuse box under the hood has the DRL (daytime running light) fuse. The underside of its lid should tell you which one. Either that, or just remove the bulbs from their sockets.
If ALL the lights (head, tail, dash,etc. are coming on all the time), then those aren't DRL's. There's a light sensor (little round black dome) on top of the dashboad in the middle front nearest the windshield. They sometimes fall down inside the dash (where it's dark!) and this triggers all the lights to come on when the ignition is on.

Posted on Apr 03, 2009

Question

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chevy silverado 2006 lights "service air bag"

I have a 2006 Chevy silverado, and I bought 1 week ago, and now the air bag light came on and says service the air bag. what could I do?

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First of all you need to get this problem fixed ASAP. While the airbag light is illuminated, your SDM (Sensing and Diagnostic Module aka: the brain of your airbag system) shuts of power to the airbags. In which, if you are in an accident your airbags will not deploy while this light is illuminated. You need to take your vehicle to a GM dealership. A Tech 2 scantool is needed to retrieve the code from the SDM. Hopefully it won't be a costly repair, but is something that defineatly needs to be corrected soon. Good luck and hope all works well.

Posted on Jul 04, 2009

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