HOME
ASK A QUESTION
REPAIR GUIDES
BECOME A MEMBER
LOG IN
Login with Facebook
OR
Remember me
NOT A MEMBER?
FORGOT PASSWORD?
CONTACT US
PRIVACY POLICY
TERMS AND CONDITIONS
☰
Home
GMC
All
Trouble Codes
P Codes (Powertrain)
P0300 - P0399
P0300
GMC P CODES (POWERTRAIN) P0300 - P0399 P0300
Select Make
All Makes
Acura
Alfa Romeo
AMC
Aston Martin
Audi
Bentley
BMW
Buick
Cadillac
Chevrolet
Chrysler
Citroen
Daewoo
Daihatsu
Datsun
Dodge
Eagle
Ferrari
Fiat
Fisker
Ford
Geo
GMC
Holden
Honda
Hummer
Hyundai
Infiniti
International
Isuzu
Jaguar
Jeep
Kia
Lancia
Land Rover
Lexus
Lincoln
Mazda
Mercedes Benz
Mercury
Merkur
MG
Mini
Mitsubishi
Nissan
Oldsmobile
Opel
Peugeot
Plymouth
Pontiac
Porsche
Proton
Ram
Renault
Rolls Royce
Rover
SAAB
Saturn
Scion
SEAT
Skoda
Smart
Subaru
Suzuki
Tesla
Toyota
Triumph
Vauxhall
Volkswagen
Volvo
Select Model
All Models
Acadia
C1500
C2500
C3500
Canyon
Envoy
Jimmy
S15
Safari
Savana
Sierra
Sierra Hybrid
Sonoma
Sprint/Caballero
Suburban
Syclone
Terrain
Truck
Typhoon
Van
Vandura
Yukon
Yukon Hybrid
Found 20 results
Codes U0073 And P0300?
Please Help. Need The Engine Ground Wiring Diagram Or Really The All Of The Engine Wire Diagram To The Pcm. I'm Thinking It Has A Bad...
Asked by
Earl91
·
1 ANSWER
12 IMAGES
2009
GMC SIERRA
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
How To Fix Dtc P0101&p0300
Wasrunning Rough And Had Dtc P0101and P0300. Tuned It Up And Replaced Massair Flow. Cleared Codes. Started Van Cel Started Flashing Has Same...
Asked by
motor1
·
2 ANSWERS
5 IMAGES
2002
GMC SAVANA
2002 GMC Denali Is Throwing A PO300 Code After...
Thought It Was A Good Idea To Go Ahead And Replace Plugs And Wires But Now I Dont Know So Much. I Have A 6.0 With 175,000 Miles. About 2...
Asked by
Oldhammer47
·
9 ANSWERS
2002
GMC YUKON
Dreaded Code P0300
Purchased Used For $2,000.00 At An Auction. When I Brought It Home I Changed The Oil Saw It Needed Plugs And Changed Them And One Of The...
Asked by
TonyNeal
·
5 ANSWERS
3 IMAGES
2002
GMC ENVOY
VIDEO
How to Read Trouble Codes
Instructional repair video
Code P0300 Misfire
I Bought The Car Used From A Friend. I Did A Complete Tune-up With New: Spark Plugs And Wires Cylinders 4 And 6 New Coils All Four O2...
Asked by
Paulo Rodriquez Salazar III
·
1 ANSWER
3 IMAGES
2001
GMC SIERRA
1998 GMC Envoy P0300 Code
Engine Performance Problem 1998 Gmc Envoy 6 Cyl Four Wheel Drive Automatic 159k Miles The Engine Misfirines Underload. It Idles Smooth...
Asked by
Lazair
·
5 ANSWERS
1998
GMC ENVOY
GUIDE
Check Engine Light Safe to Drive?
We are a team of ASE certified mechanics that have created this guide to help you understand if your car is safe to drive with the check engine or service engine soon...
Code P0300?
I’ve Got The P0300 Trouble Code For Multiple Cylinder Misfire. I’ve Got Rough Idles, Misfires, Backfiring Especially While Driving...
Asked by
Caitlyn Brimer
·
5 ANSWERS
8 IMAGES
1996
GMC JIMMY
P0300 Code Fluctuating Rpm's Worst Between 1500-...
Car Starts Fine. When Accelerating When Cold, Engine Chugs. Rpm's Fluctuate While Driving From A Stop And At Cruising Speeds Even With...
Asked by
Bobbie Storrs
·
5 ANSWERS
1998
GMC JIMMY
1996 GMC Sierra P0300
The Truck Starts Fine And Runs Well. If I Drive It 20 Plus Miles And Let It Cool Of Just A Little (time To Shop At Lowes 20 Min) It Starts...
Asked by
dabaker
·
2 ANSWERS
1996
GMC SIERRA
2001 GMC Jimmy PO300 Code
I Have Replace The Motor In My Jimmy. I Keep Getting The Po300 Code I Change Every Thing Plugs, Cap, Rotor, Wires, Fule Fileter, Even The...
Asked by
evolution46
·
1 ANSWER
2001
GMC JIMMY
PREV
1
2
NEXT
Ask a new GMC question
Sponsored links
Ask a Car Question. It's Free!
SPONSORED LINKS
Online car repair manuals
