20 Most Recent 1999 GMC Suburban Questions & Answers

Yes, there is no real difference between the body or frame of a 2whl and 4whl as long as they are the same length, IE standard cab, crew cap, long bed, short bed... If it is a HD 4x4 you might have an extra hole in the floor of the cab for the shifter lever, but the 2whl should have a block off plate for this. If not, you might need to fab up a patch.

1999 GMC... | Answered on Jan 07, 2020

Some of the V-8 engines like to leak out the back of the intake manifold. It then drips onto the exhaust and evaporates so you never see it, you just smell it. Look for it back there. You may want to have the system pressure checked too. If it is leaking out the intake, it is not an easy or cheap fix. I just did my 96 Yukon and it was not fun.
Good Luck and hope this helps.

1999 GMC... | Answered on Oct 02, 2019

How long are the trannys lasting between changes?

1999 GMC... | Answered on Jun 28, 2019

My tail lights and instrument panel lights are out and fuse keeps blowing need to fix it any ideas

1999 GMC... | Answered on Apr 27, 2019

don't know what your problem is. we cannot see your history of questions. this web site has volunteers that offer support for people with problem. I specializes in electrical issues. If your question isn't electrical then you can submit your question again. or replay to my thread. or if you need instant answers the you can go to the one on support room where they get paid from you for the answers they give. I help poeple for free and expect people to give a fair score in return. \hope \i have answered your questions and will wait for you to send me your question. have a great day.

1999 GMC... | Answered on Dec 15, 2018

Well it could be the selector switch, but I doubt it.
Generally, the service light means something is not working that the computer controls. Solenoids and valves are a couple of possibilities.
The transfer case is shifted by solenoids commanded by the body computer based on the switch position on the dash.
You should be able to have a shop scan the body computer for trouble codes and proceed from there.
A basic code reader may not access the body computer.

1999 GMC... | Answered on Nov 12, 2018

Don't know that much about 99 Surburbans but you may won't to see if you could just unplug it from the cluster or maybe see if thiers a fuse for your lights that you can take out

1999 GMC... | Answered on Nov 12, 2018

I had this exact problem on my 2005 5.3L Suburban... It would shift into 1 and 2 and reverse, but not 3 and 4.

I took it into a transmission shop, and he said the 3-4 shift solenoid was burned up. Wanted 1500 to fix it. Far from home, so I have to pay it.

1999 GMC... | Answered on Oct 21, 2018

VERY common issue.. the handle being replaced is ok.. but the actual metal rod that connects it to the latch needs bent a little to make it more responsive, what happens is over time this rod (which is bent slightly) will straighten, and the operator pulls harder on the handle which eventually brakes.. then replacing the handle will solve it for a while, until the trend repeats itself... VERY common, I have fixed hundreds in the shop so far...

1999 GMC... | Answered on Sep 29, 2018

Check right behind glove box, there should be a slotted area to remove the filter.

1999 GMC... | Answered on Aug 04, 2018

Anywhere from 100 usd to 300 usd.

Google ecu 1999 chev suburban k1500 5.7

And you will get some suggested locations and price.
Good luck
Semper Fi,

1999 GMC... | Answered on Feb 18, 2018

Check your temp control switch the control is not sending the correct signal to the actuator. Try turning on the heater an then dial it up/down temp and see if that works


1999 GMC... | Answered on Feb 03, 2018

randomly will not start 3 times?????? Won't start how ? When you turn the key to start ,nothing happens or the starter engages an spins the engine but won't start an run ?

1999 GMC... | Answered on Jan 17, 2018

Yes add oil,it is hard to say how much without knowing how much you lost. I would guess 4oz of pag oil. And yse vacuum and charge the same. Find out how much freon to add.

1999 GMC... | Answered on Dec 12, 2017

I looked at info for 1500--5.7L engine.
6 psi @ 1000 rpms
18 [email protected] rpms
24 psi @ 4000 rpms

Sometimes, you can use analog gage in place of oil pressure sending unit and double check oil pressure that way. If oil pressure is actually low, if high mileage engine, I doubt replacing oil pump will help. I just wanted to add, check oil pressure engine warmed up.

1999 GMC... | Answered on Oct 15, 2017

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