Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Saturn SLFACTORY OEM SERVICE PROCEDURE
Data Link Communication DTCS
DATA LINK COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC U1000 and U1255 | Module Communication |
| DTC U1016 | Lost Communications With Engine Control System |
| DTC U1040 | Lost Communicatons With Brake/Tractions Control Module |
| DTC U1064 | Lost Communicatons WIth Body Multiple Control Systems |
| DTC U1088 | Lost Communication With Restraint Control System |
| DTC U1096 | Lost Communication WIth Driver Information And Displays Control System |
| DTC U1300 | Class II Data Link Low |
| DTC U1301 | Class II Data Link High |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.