answersLogoWhite

0


Best Answer

If you look under your hood you will see an evaporitive fuel canister on the drivers side. Towards the front of the vehicle on the canister is a cap you can pull off and if you look inside it's probably plugged. I had the identical problem on my 98 GMC and after taking a shopvac to the canister I solved the problem. GM wants a couple huindred bucks for it if you just want to get a new one but if it's plugged it creates a vacuum in your tank.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is causing my 1998 GMC Sierra Pickup's gas tank to collapse?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

When was Fourth Floor Collapse created?

Fourth Floor Collapse was created in 1998.


What is the spark plug gap size for 1998 gmc sierra?

I have a 1998 GMC 1500 sierra 5.7 350 4x4 and it is 0.060


What is a CK Truck?

C/K was the designation of Chevrolet and GMC 1/2, 3/4, and 1 ton pickups from 1975 through 1998 (during this time, names such as Silverado, Sierra, Scottsdale, etc. just denoted trim packages, and not actual models).


How do you change ash tray light bulb in 1998 GMC Sierra?

how do you change ash tray light bulb in a 1998 GMC Sierra 1500


Will a transfer case from a 1998 GMC Sierra fit a 2003 GMC Sierra?

NO.. They are a different type.


What is the difference between a 1998 GMC Sierra C3500 and a 1998 GMC Sierra K3500?

The C3500 is rear wheel drive. The K3500 is 4 wheel drive.


Which country faced financial collapse in 1998?

Russia


When was Sierra Marcoux born?

Sierra Marcoux was born on January 29, 1998, in Irvine, California, USA.


What is the horsepower of a 1998 GMC Sierra?

250 hp


What type of freon is in a 1998 GMC sierra?

R134a


What actors and actresses appeared in El chacal de la sierra - 1998?

The cast of El chacal de la sierra - 1998 includes: Alberto Estrella


What vehicles have a 5x127 bolt pattern?

1988-1998 Chevrolet 2 wheel drive C1500 pickups