20 Most Recent 2004 Chevrolet Chevrolet TrailBlazer LS Questions & Answers

When you change air flow direction from defrost ,to floor ,to vent . does air flow change ? Where is the air coming out of ? Does it stay there ?

the following links explain the codes and practical and a procedural way of doing so as to not through parts at problem http://www.obd-codes.com/p0171 http://www.obd-codes.com/p0172

Relay module 45 ? You mean relay # 45 in the under hood fuse / relay power distribution box. It's just a relay , not relay module ! Having problems with your cooling fans ? 45 FAN Relay Engine Cooling Fan. If so it just pull's out , wiggle an pull

alternator is getting too much of a load

You need to check your main relay in the power distribution box in the engine compartment. Check the voltage with a DC voltmeter at the light bulb socket. If there is no voltage

With voltage present, get a voltage meter and put a probe on either side of the fuses. You should have 0 volts if the fuse is good. You will have supply voltage if the fuse is burnt.
If you check without power pull the fuse and use audible continuity or the ohms setting on the meter. You should read 0 ohms if the fuse is good. If it reads O.L. the fuse is burnt.

problem with the cam phazers causes cam sensor code. they tend to gum up but mostly when the oil is not serviced over time.

Only if the battery is dead

Fuse under the hood may have blown or a fuseable link along the wire has separated. Also check that isn't any corrosion at the plug sites. If you need further help, I’m available over the phone at https://www.6ya.com/expert/nathaniel_9ed79ef078a2f164

try with change the spark plugs

Tensioner pulleys are designed to be 'Self Adjusting'. These pulleys are on spring loaded arms so they automatically push against the belt keeping it tight. You use a socket or a spanner to swing the pulley arm back against this spring. *Note* This is a powerful spring so BE CAREFUL when your working on it! A lot of these tensioners have two small holes to help with installing a belt. When you swing the tensioner arm back these two holes line up with each other. You can then slide a hex key, or something similar, through both holes and it holds the arm back giving you space to get the belt on. *Caution* When your ready to release the tensioner DO NOT just pull the hex key out!! With the socket or spanner you used to swing the tensioner arm back push the arm against the spring again, carefully pull the allen key out then Carefully release the pressure on the spring so the pulley sits correctly and tensions the belt.

Help in the link. It may be a faulty switch, but you can test it. https://www.google.com/search?q=2012+Chevrolet+Orlando+open+jammed+hatch ..

check the abs system for relay and electrical problems the clicking can be from a cycling relay and the head lights flickering from the power draw for the abs away from the head lights.

You either replace the whole board as a module, or a company like RS Components, or even Amazon can sell you just the solder-on USB socket. https://www.google.com/search?q=usb+port+replacement ..