20 Most Recent 1998 GMC Suburban Questions & Answers

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1998 gmc suburban coolant system

I really hope that when you were doing this job that you relieve pressure from your cooling system you have trapped air in there that needs to be released the only way they release that air after that job is electric car run until your fans kick on by themselves then your system has been thoroughly thoroughly Purge of air
2/6/2018 6:46:35 PM • 1998 GMC... • Answered on Feb 06, 2018
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Car appears to be flooded all the time. Keeps stalling, has no power. Car runs on gas and petrol but does the same thing on both fuels. The car has been taken to several mechanics who say they've

any body bothered to read the fault codes to find out the area of the problem has anybody bothered to check for blocked cat converters has the engine coolant temp sensor being checked as it may be still telling the ECM that the engine is cold and the air/fuel mixture is for a cold engine so it is running too rich when hot
12/17/2017 6:10:50 AM • 1998 GMC... • Answered on Dec 17, 2017
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1998 GMC Suburban 4x4 problems

Don't worry I'm sure you will get the solution of your problem, just check the link I attached Best Manuals
10/24/2017 6:36:51 AM • 1998 GMC... • Answered on Oct 24, 2017
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1998 gmc suburban 4x4: where is the flasher/hazard relay? Turn indicators stay on solid and don't blink. Bu lbs stay on solid too.

most likely not a relay but a failed flasher can as the lights are on but not blinking a relay would not have the lights on
12/21/2016 5:19:52 AM • 1998 GMC... • Answered on Dec 21, 2016
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1998 suburban security light

This may be related to the antitheft system The system is known for turning off the starter and/or injectors when it fails. Normally when the injectors are turned off, the car will run for a second or two, and then stall. Is there a light on the dash that says SECURITY or a picture of a car with a lock through it? This is a common problem worth looking into. http://www.diy-gm-security.com/ 26230199-v1a43n2rm1ow1ti02vccuiea-5-0.jpg
7/21/2016 8:23:40 PM • 1998 GMC... • Answered on Jul 21, 2016
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When driving the serpentine came off, checked the belt alls good. want to in stall a new one but want inspect to see the reason it came off, what should i be looking for besides the tentioner,how to t

spin each pulley individually make sure they are all straight and bearings are good and quite also make sure there is nothing loose that can make contact with the belt if any of the pulleys are loose or noisy or if they don't turn freely they will need to be replaced
10/31/2015 6:19:15 PM • 1998 GMC... • Answered on Oct 31, 2015
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Turn signals, hazard and brake lights work intermittently or not at all. Solutions?

Check the rear ground connection for corrosion or a loose crimp connection.
5/31/2015 2:43:22 AM • 1998 GMC... • Answered on May 31, 2015
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I have a 1998 Chevy Suburban.whenever it rains the driver side floorboard becomes wet. door seals are good. where could the leak be coming from?

Possibly from the windshield. Is there any rust around the windshield area? Check for debris in water drain outlets under the wiper arm cowling.
5/9/2015 5:29:48 PM • 1998 GMC... • Answered on May 09, 2015
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No brake lights on a 1998 gmc k1500 suburban

check the switch on the brake pedal.
3/4/2015 2:38:01 PM • 1998 GMC... • Answered on Mar 04, 2015
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When I try t accelerate to pass or go uphill the rpms increase but the vehicle does not accelerate. Tranny fluid is full.

Sounds like either a bad transmission pump or torque converter. Have the vehicle evaluated by a transmission shop.
1/19/2015 7:23:39 AM • 1998 GMC... • Answered on Jan 19, 2015
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My vehicle starts but when I step on the gas it dies.

After it starts does it idle good before you step on the gas , will it keep idling before you step on the gas ? Is the check engine light on ? What engine does the vehicle have ? This vehicle came with 5.0 L ,5.7L ,6.5 L , 7.4 L engines ,gas or diesel ? Three specific data sensors provide the vehicle control module (VCM) with the basic information for the fuel management portion of its operation. Three specific signals to the VCM establish the engine speed and air density factors. The engine speed signal comes from the distributor high resolution circuit. The VCM uses this information to determine engine speed (RPM). Air density is derived from intake air temperature (IAT) and manifold absolute pressure (MAP) sensor inputs. The IAT sensor measures the air temperature that is entering the engine. The IAT signal works in conjunction with the MAP sensor to determine air density. As the intake manifold pressure increases, the air density in the intake manifold also increases and additional fuel is required. This information from the IAT and MAP sensors is used by the VCM to control injector pulse width. One of these sensors could be bad or a plugged catalytic converter .
12/27/2014 10:11:55 PM • 1998 GMC... • Answered on Dec 27, 2014
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How do I change the inside headlamps on my 1998 Suburban?

It depends, if you have sealed beam headlamps, there should be a frame around headlamp, remove it. If composite headlamps, there are two hex headed pins in top radiator support, remove those pins. Take out lamp assembly so you can get at bulbs.Don't touch new bulbs with bare hands.
12/17/2014 6:19:50 PM • 1998 GMC... • Answered on Dec 17, 2014
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How do I replace the high/low beam switch in my 98 Suburban?

The switch is bolted to the left side of the steering column under the dash. Make sure you have good lighting look under and pull the leaver as you would to turn high beams on. The switch is connected by a metal rod that runs up the steering column. You'll see it moving. Use the proper tool to remove the two bolts that bolt the swith to the column. Unplug the wire harness and angle the switch and it will release from the metal rod. Do not bend the rod! Be safe don't do this with your legs sticking out into traffic. Reverse the steps to reinstall. Good luck
12/14/2014 12:52:14 AM • 1998 GMC... • Answered on Dec 14, 2014
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The high beams on my 1998 Suburban do not work

You need to check for power and ground at the headlamps I have ran into situations where you think their is a problem with headlamps when just both bulbs have burned out
12/13/2014 9:23:09 PM • 1998 GMC... • Answered on Dec 13, 2014
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High beams do not work

I had this issue as well. My headlights did work but the high beams didn't. I replaced the high low beam switch under the dash bolted to the steering column. Go to rockauto.com and it'll be under your vehicle under electrical switches. The switch heats up and gets stuck in high or low. Common problem. Good luck!
12/13/2014 8:00:31 PM • 1998 GMC... • Answered on Dec 13, 2014
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Truck was running great next morning went to start,it cranks & cranks then backfires.Sound like timimg?

the backfires occurs in airfilter assembly as it was remain opened from somewhere fix it properly
12/8/2014 2:38:04 PM • 1998 GMC... • Answered on Dec 08, 2014
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I have a 98 GMC Suburban K2500 3/4 ton 5.7 engine, Auto, 4wd (Push Button) The Transfer case has just had a complete rebuild. I have installed a new dash switch for the 4WD, & also a new Contr

The selector drive mtor mounted on the transfer case had alot of problems with water getting into the circuit board and also the mtoro drive getting stuck. At the dealership I have replaced hundreds of these over the years.
11/30/2014 3:48:09 PM • 1998 GMC... • Answered on Nov 30, 2014
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