Hello - Cadillac XLR Forum: XLR and XLR-V Forums
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 03-18-2017, 03:23 PM Thread Starter
rmatt's Avatar
Join Date: Mar 2017
Posts: 1

Hello everyone. I just picked up a 2006 XLR with about 91,000 miles. Great looking car. Also runs great. It does however have some issues. The first one is that after driving it about 50 miles the gas gauge drops to empty, even tho it has a full tank, and the service fuel system alert comes on the DIC. The seller told me this would happen and said it had been that way since he purchased it. I would like to take care of this. Any ideas? Also, where can I get a decent repair manual for this vehicle. Look forward to any replies.
rmatt is offline  
Sponsored Links
post #2 of 2 (permalink) Old 03-22-2017, 06:40 PM
ccclarke's Avatar
Join Date: Mar 2008
Location: New England '13 XTS Platinum
Posts: 1,087
Hello and welcome to the forum! You are now authorized to post in all the forum areas.

Erratic fuel levels are normally caused by either - Sulphur deposits on the gas tank sending unit, or a bad sending unit. I recommend running a bottle of Chevron Techron fuel additive through the fuel system the next time you fill up. It has about a 50% success rate at cleaning the Sulphur deposits off. It's worthwhile to use fuel system cleaner at least twice a year -especially with 91k miles.

As for maintenance manuals, you can't beat the GM factory Service manuals for the amount of detail they provide. Available at helminc.com

If you need to troubleshoot any kind of electrical problem involving any of the many interconnected modules in the XLR, you'll need to buy a Tech 2 scan tool. Nearly every troubleshooting procedure begins with running a diagnostic test. Google for the best price. You'll need a pre-programmed 32M card and a CANDi interface module. Usually, they come with everything - but not always. . .

Keep the questions coming!

ccclarke is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Cadillac XLR Forum: XLR and XLR-V Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome