20 Most Recent 1998 Chevrolet Express Questions & Answers


Ground problem more then likely . Looking at a wiring diagram turn signals an headlamps right front share common ground G-109 . Do you know anything about automotive electrical circuit testing ? Voltage drop testing ? Watch these videos .

Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

Electric Testing Techniques You Need to Know

Free wiring diagrams at http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on lighting ,then under subsystem click on headlamps .Click the search button ,then the blue links . Look at wiring diagram so you know which wire is which . Power , ground etc...
G109
In the right side of the engine compartment, near the fender well !

1998 Chevrolet... | Answered on Sep 02, 2017


The idle is computer controlled. Have a look for any disconnected/split vacuum hoses allowing unmetered air to enter the engine which will cause a high idle. Have a look inside the throttle plate and inspect for dirty/black. If so, clean with a carb spray and toothbrush. This can affect idle if the plate is sticky. You may also have a sticky idle air control motor causing this issue

1998 Chevrolet... | Answered on May 20, 2015


If it is the passlock, you will be getting a 'security' or similar light on your instrument panel. Then you can bypass the system fairly easily.
If you have a check engine light, Autozone or Advance Auto parts stores read them for free from the computer connection. You need an OBDII scanner to retrieve the engine codes.

1998 Chevrolet... | Answered on Jul 21, 2014


Those products do not work

Just make the proper repairs

Once you add them, they can not be removed,
short of a hot tank or acid bath during a rebuild

You can find anything you want on the internet

You will just ruin the vehicle for the next owner

1998 Chevrolet... | Answered on May 11, 2014


probably a fuse. if the fuses are good check the brake light switch on the brake pedal.

1998 Chevrolet... | Answered on Mar 10, 2014


not enough fuel pressure check filter could be bad pump

1998 Chevrolet... | Answered on Aug 28, 2013


There should be a sticker on the hood or radiator support with the size listed, and you can use the 8th digit of the VIN code on the windshield too.

1998 Chevrolet... | Answered on Jun 24, 2013


dislocate any wiring harness' (speakers etc.)take a 2x4 and set it up under the door with a floor jack holding it in possition under the door.
remove the 3 bolts on the bottom hinge.
remove the top bolts.catch the door ...
replace in reverse.

1998 Chevrolet... | Answered on Mar 27, 2013


if you have replaced ther speedometer sending unit then your dash cluster is the problem chances are that the sending unit was only part of the problem. the cluster is static sensitive so have a mechanic replace it for you, if your not familiar with newer dash clusters, static electricity can short not part but the whole dash unit which is quite costly, so be sure to have a shop replace it, if your not up to the task

1998 Chevrolet... | Answered on Jan 05, 2013

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