Sign up to remove ads. We'd love to have you amongst our ranks! Just Click here!

gmc forums   gmc forums

Go Back   GMC Forums > GMC Vehicles Currently In Production > GMC Yukon Forum


GMC Yukon Forum Forum for discussions regarding the GMC Yukon

GMC Forum: 1999 GMC Yukon
Thread Tools
Old 08-20-2019, 05:16 PM
jsavitiaz jsavitiaz is offline
Junior Member
Drives a GMC Truck
Join Date: Aug 2019
Posts: 1
Red face 1999 GMC Yukon

Hey guys, new here and new to the GMC Yukon. Well my wife's Yukon (1999 V8 5.6L) needed some much needed work. I replaced spark plugs, U-joints (super tough for a beginner), distributor cap, alternator, and light all around. However, when we start the Yukon and we try to accelerate, it seems like it wants to die on us. I discovered a "hole" on the passenger side of the motor (pics coming soon, I need to get to it later) that is 20mm is diameter. The hole was covered in duck tape, lots of duct tape and now that we removed it, the truck is acting up. Any suggestions on what it could be missing? It has a gasket there too. I know its not the PCV valve because that is in the other side of the motor and I replaced that too. I will post pics later tonight, but any guesses or suggestions would be nice.

Thank all.
Reply With Quote

Registered members see less ads. Please sign up! We'd love to have you...

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 06:09 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc. recognizes that "GMC", it's logos and various model names and numbers are registered trademarks of the General Motors Corporation. These terms are used for identification purposes only. is not affiliated in any way with the General Motors Corporation, GMC or any other company listed herein. All information on this site is the opinion of its members and not the opinion of the site itself. 2017 Madison Ross Media Group. All rights reserved. Content published on requires permission for reprint.

Need products for your GMC Truck? Check out your options at the links below:

Looking for something a little sporty? Believe it or not, Kia may have something for you. The Kia Stinger is a large sport-oriented hatchback sedan in the mold of the Audi A7. The Kia Telluride is a mid-size SUV similar to the BMW X5...