20 Most Recent 2003 GMC Envoy Xl - Page 5 Questions & Answers

unhook your battery for several minutes to reset the light. if it comes back on theres a problem somewhere. also advanced auto parts can hook up a scanner to tell you why it's on and they can also turn it off at the same time free of charge

yes it can a machine shop can repair this problem ask a auto parts store better with a local one than a box store one you can also get a remain head get new head bolts as well

take the breather off and take a 10 mm socket to take the coil off easy to get to then take a 5/8 plug socket to take out plugs easy to get to,

Having it flashed mean to have it reprogrammed for which you will need access to a GM factory scan tool your best bet is to bring it to a facility with the capability to perform the task.

very carefully call a mechanic. We have the proper tools.

have you checked for a vacuum leak?pcv attached,no leaks around plenum,engine coolant temp sensor reading right.

Hi Artunique, The body control module controlls windows doors mirrors, and maybe seats. It will control the preset settings for seats and sun roof and anything on the body which is electronically controlled. Regards John

cheak the brake pedel swich it work a swich in the gear seleter