Diagnostic system '04 tahoe

[XR4Ti]

What type of diagnotic system is on board a '04 Tahoe? Anyway to pull codes without computer code reader?

[Jimmiee]

What type of diagnotic system is on board a '04 Tahoe? Anyway to pull codes without computer code reader?

Your Tahoe has a PCM which controls the Powertrain. Since the trouble codes are in OBDII format they contain 5 digits for each code. You will need a code reader to retrieve your codes. You can get your truck scanned for free at Autozone parts stores.