2004 GMC Yukon Denali XL 6.0 V8
05-18-2022, 03:15 PM
#1
Junior Member
Posts like a Ricer Type-R
Thread Starter
2004 GMC Yukon Denali XL 6.0 V8
Hi All,
I have two error codes P0300 and P0446. For P0300 i have replaced the spark plugs and wires and for P0446 i have replaced the gas cap but the code is still there.
Thank you.
I have two error codes P0300 and P0446. For P0300 i have replaced the spark plugs and wires and for P0446 i have replaced the gas cap but the code is still there.
Thank you.
05-18-2022, 03:31 PM
#2
Retired
Certified Car Nut
Did you CLEAR the codes?
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
05-18-2022, 05:40 PM
#4
Senior Member
True Car Nut
What code is still there the misfires or the evap?
05-18-2022, 10:37 PM
#6
Senior Member
True Car Nut
How does it run? History? Give us some info or we will not be able to help you.
05-19-2022, 02:17 AM
#7
Junior Member
Posts like a Ricer Type-R
Thread Starter
The truck runs fine it is as smooth as when I bought it new in 2004 it only has 107000 miles and always being serviced at GM dealership I replaced the spark plugs and wire and the gas cap over the weekend.
05-19-2022, 09:26 AM
#8
Retired
Certified Car Nut
Just to verify...
Key On, Engine Off... clear faults
Key Off.
Key On, Engine Off, READ faults.
Report back.
Key On, Engine Off... clear faults
Key Off.
Key On, Engine Off, READ faults.
Report back.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
05-19-2022, 09:29 AM
#9
Retired
Certified Car Nut
If the faults are still there after reading them again, something is wrong with your scanner and its not clearing them.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel