This sticky is for links to the most asked about questions, info, specs and general knowledge of the Vortec 5.3L V8.
If you see a thread that should be considered to be added here, click on the <Report> button with a note indicating that it should be added.
General
A Nice Variety of GM V8 Engine "How-To" Articles
Ordered a tune from PCM of NC
What other vehicles have a compatible 5.3L DOD?
No Start, Multiple U1000 codes, Class 2 Serial Communication Problem
5.3L no crank, no start, codes P0335 and P0340
Using ACDelco Top Engine Cleaner
Carbon cleaning the 4.2L
Using TEC
Questions and using TEC
Cooling
How to test the electro-viscous fan clutch
Best brand for new thermostat
Bad thermostat? (Cooling system bleeding)
Fan clutch-AGAIN (Going to efans)
2006 Envoy Denali - 5.3 water pump replacement
Overheating problem solved
Jet Sound When Starting
Engine sounds like plane on take-off (Efan discussion)
Engine Mechanical
Valve-train Noise Questions
Low oil pressure (5.3) andP0521
How-to Envoy 5.3 starter replacement
Spark plugs....
Valve covers
Plug change on the 5.3 demystified
Changing plugs on the Envoy 5.3L
Cylinder head casting number for 5.3?
Suggestions for Performance Camshaft for 2005 Trailblazer EXT 5.3L V8
oil pan is leaking how do I remove pan?
Oil Change Tricks?
Low oil pressure / stop engine warning
Removing Trans for main seal leak.
Flex plate cracked: do I need to pull
AFM (Active Fuel Management) / DoD (Displacement on Demand)
AFM/DOD issues
06 5.3 VIN M, Lifter Noise, Zero Compeession Cyl #1. DOD Delete help
Collapsed lifter.......
AFM/DOD issues
How to disable AFM/DOD at no cost
Collapsed a lifter and feeling out the options
06 Denali 5.3L: Misfire #6 Collapsed DOD Lifter
AFM deactivation device
How to fix collapsed lifter on DOD/AFM easier
Fuel System
AC Delco fuel pump made by Bosch?
Bosch fuel pump in an ACDelco box
Emissions Systems
Writeup: O2 Sensor GMC '06 Envoy 5.3 (Replacement)
Exhaust
Exhaust Manifold Clamps (Dorman clamps)
5.3 EXHAUST MANIFOLD BROKEN BOLT FIX (Dorman clamps)
Exhaust Recommendations?
If you see a thread that should be considered to be added here, click on the <Report> button with a note indicating that it should be added.
General
A Nice Variety of GM V8 Engine "How-To" Articles
Ordered a tune from PCM of NC
What other vehicles have a compatible 5.3L DOD?
No Start, Multiple U1000 codes, Class 2 Serial Communication Problem
5.3L no crank, no start, codes P0335 and P0340
Using ACDelco Top Engine Cleaner
Carbon cleaning the 4.2L
Using TEC
Questions and using TEC
Cooling
How to test the electro-viscous fan clutch
Best brand for new thermostat
Bad thermostat? (Cooling system bleeding)
Fan clutch-AGAIN (Going to efans)
2006 Envoy Denali - 5.3 water pump replacement
Overheating problem solved
Jet Sound When Starting
Engine sounds like plane on take-off (Efan discussion)
Engine Mechanical
Valve-train Noise Questions
Low oil pressure (5.3) andP0521
How-to Envoy 5.3 starter replacement
Spark plugs....
Valve covers
Plug change on the 5.3 demystified
Changing plugs on the Envoy 5.3L
Cylinder head casting number for 5.3?
Suggestions for Performance Camshaft for 2005 Trailblazer EXT 5.3L V8
oil pan is leaking how do I remove pan?
Oil Change Tricks?
Low oil pressure / stop engine warning
Removing Trans for main seal leak.
Flex plate cracked: do I need to pull
AFM (Active Fuel Management) / DoD (Displacement on Demand)
AFM/DOD issues
06 5.3 VIN M, Lifter Noise, Zero Compeession Cyl #1. DOD Delete help
Collapsed lifter.......
AFM/DOD issues
How to disable AFM/DOD at no cost
Collapsed a lifter and feeling out the options
06 Denali 5.3L: Misfire #6 Collapsed DOD Lifter
AFM deactivation device
How to fix collapsed lifter on DOD/AFM easier
Fuel System
AC Delco fuel pump made by Bosch?
Bosch fuel pump in an ACDelco box
Emissions Systems
Writeup: O2 Sensor GMC '06 Envoy 5.3 (Replacement)
Exhaust
Exhaust Manifold Clamps (Dorman clamps)
5.3 EXHAUST MANIFOLD BROKEN BOLT FIX (Dorman clamps)
Exhaust Recommendations?
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