What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
3Original wording in English
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0604
This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB, SATURN
Reported code forms P0604
This informational bulletin communicates Information to technicians on control module Diagnostic Trouble Code(s) (DTC)(s) P0601, P0602, P0603, P0604, P0606, P062F, P06F3, P1621 which can be shared in multiple modules.
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SATURN
Reported code forms P0604
This Preliminary Information communication provides information to the technician about vehicle that have a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0601, P0603, P0604, P062F or P1621…
Check vehicle applicability
11A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | ESCALADE ESV | 2026 |
| Cadillac | ESCALADE ESV | 2025 |
| Cadillac | ESCALADE ESV | 2015 |
| Cadillac | ESCALADE ESV | 2014 |
| Cadillac | ESCALADE ESV | 2013 |
| Cadillac | ESCALADE ESV | 2012 |
| Cadillac | ESCALADE ESV | 2011 |
| Cadillac | ESCALADE ESV | 2010 |
| Cadillac | ESCALADE ESV | 2009 |
| Cadillac | ESCALADE ESV | 2008 |
| Cadillac | ESCALADE ESV | 2007 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.