there are 2 tabs on the top of the housing, pull up on them to release the head light, pull the housing forward to remove.
2004 gmc envoy with code p0128
how to replace wheel bearings on 2004 GMC envoy?
Take your car to a GMC dealership and pay $850.
There is A White Star Type Screw on top of the headlight
2004 GMC Envoy is on page 28 http://documents.victorytechnologies.com//documents/product/929.pdf 2004 GMC Envoy is on page 28 http://documents.victorytechnologies.com//documents/product/929.pdf
How do you remove the fan shroud on a 2004 get envoy
On a 2004 envoy, open the hood and on the top of the headlight assy there are two tabs that you pull up allowing you to pull the headlamp assy forward and access the the bulbs. These are halogen bulbs so remember to wear gloves when handling the bulbs.
The Gmc Envoy has two engine types. Both the Inline six and the 5.3 V8 use a timing chain. They are a lifetime install unless there is a failure.
It sounds like you need to change the 02 sensors.
How do you change a serpentine belt on 2006 Envoy
Change oil pump 2003 Gmc Envoy
The AC recharge port on a 2004 GMC envoy is on the low pressure connection. It is the larger of two hoses near the firewall.