20 Most Recent 2007 Chevrolet Avalanche LTZ - Page 9 Questions & Answers

wire from feed come off the light switch inside the dome light ,

are you still using e85?? if so stop the higher alcohol content can cause some cold weather starting issues. I would recommend running regular fuel and not using e85.I know your vehicle is a flex fuel vehicle and can run it,but the fuel is ****!!!!! for one the shelf life is very short and most of this sets in the storage tanks a good while since most people dont run it.also the mileage is decreased so much if you do the math you will find it is probably cheaper to run regular gas. if your running regular gas now and still having problems have fuel pressure checked try cycling the key on and off a couple times and see if it starts quicker this may show signs of a pump aloowing fuel to leak out of lines and having to prime up before getting to cylinders.this is my opinion of the e85 fuel but i believe you will find 99% of technicians will back me up on this.thanks for using fixya

Try to get work done under Warranty as you have about a 3 Year old truck. For this kind of oil loss you must have bad piston rings or valve stem seals or a leak. The best exam for your truck would be to pull the sparkplugs and check their condition, then do a compression test.

A quick test, an Electronic cylinder balance test would only give minimal information for weak compression but is not intrusive. When Piston rings are installed their ends are staggered to seal in oil and compression. If they were not staggered when installed or if they rotated by themselves; all the gaps will line up and you have problems.

Another non-intrusive test is a chemical tracer test. Some Autoparts stores may carry kits for this. The kit has an Ultraviolet pen flashlight, colored Goggles, and a chemical additive for the oil.
You add the chemical to the oil, run the vehicle, then use the penlight and Goggles to see if the oil is coming out of the engine. There will be a Glow and you can see oil everywhere.

When you contact the Dealer you can also ask about Service Bulletins for your particular Model. I hope my Suggestions have helped you. Would be interested in your results.

Look inside your owners manual in the service and appearance care section, in this section the manufacturer specifies what mileage to perform certain tasks, leaving worn spark plugs in your engine could cause gas mileage to suffer, poor engine performance, cylinder misfires which can cause damage to the catalytic converter assembly, if your manual says to change them at that mileage change them with a good quality spark plug that has the ability of doing the same mileage interval of the original ones....

Check the battery in the key fob.

Sounds like low charge in battery. Try charging battery or jump start vehicle. If one of these work then you have to find out why the battery went low or dead. For a 2007 you may just need a battery but test have to be run to find the problem there is no magic wands that will pin point this problem.

If it had four or five prongs coming out of the bottom it is the relay. There should be a part number on it. If there is you can have any parts store cross that number. If not bring it in and they should be able to match it up. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Wrong battery. Burn out chip. Misplace battery.damage connection piece.

you may have bad horn, take a test light and see if power is going to horn when horn is pushed, if theres power going to it then you have a bad horn,if theres no power to it then check the horn relay. but il bet if the fuse is good then the horns are bad.

You are on the right track, the problem which is common is the fuelpump, the problem is , theres an internal antiflow valve the goes bad inside the pump, what happens is the fuel runs back into the tank and empties the lines and injector rail, when you go to start the truck it now take time for it to pnump fuel back through the lines to fuel rail and injectors and pressurize, so it take so cranking to get going. a little neat trick to be sure is to turn key on then off three times and then it should fire up, if it does then its the fuelpump, you will need to drop the tank and replace the fuelpump asm, the pump will still operate, we have customers that have had this problem for a couple of years and still havent repaired it due to the cost, they dont mind the long crank time to start, if you are going to repair drive until gas is about empty, this will help alot when its time to drop the tank,heres a picture of the fuelpump asm, hope this is helpful, have a good day.

if the battery is constantly discharged/recharged it will last 3 to 5 years (on average)but car makers are famous for using the "cheapest" they can get ($1 per car adds up) and so many are produced in 3rd world countries with a domestic makers name on them.in todays real world the answer in NOBODIES GOT A CLUE......my old car has an "EXIDE" BATTERY THAT IS 10 YEARS OLD.(they send all the old batteries to INDIA for reprocessing.........)

is the chech engin light on

Charge the battery up fully over 3 days with a slow charger.
or
Change the battery to a new one, if the only thing that happened was to run the battery down.

Batteries only last an average of 3 years I learned working at Sears Robeuck & Co.

If the 2007 battery was in it, and it is 2010, I would say it's due for a new one for reliability.

Good luck.

buy a haynes manual at discount or zone

Hi,

#1) Oil and Filter Change.

#2) Transmission Filter & Gasket Also Transmission Flush and new transmission fluid.

#4) Complete Brake Inspection Replace if Needed. Also Flush out Brake System with new Fluid.

#5) Inspect Front End for Worn Parts, Check for Alignment--Inspect Tires .Replace if Nessary otherwise Rotate.

#6) Check Wheel Bearings Front and Rear.or Struts -Shocks-

#7) Check and Flush out Power Steering Fluid. with new Fluid. Change power steering filter if Equiped.

#8) Inspect. ignition System, Replace all replaceable Parts. Or only the Damaged.

#9) Replace wiper Blades w/New

#10) Replace PCV Valve--Air Filters-Fuel Filter-Replace any Breather Elements and Check Vacum Lines for Cracks .Replace if Needed

#11) Inspect Radiator and Heater Hoses .Replace.

#12) Inspect Battery Condition, Check Battery Cables for Corrosion -Replace if needed.

#13) Remove and replace Spark Plugs.Cap & Rotor.

#14) Replace Spark Plug Wires,

#15) Check all Lights ,replace Bad lights.Interior and Exterior.

#16) Check Rear End/Diferrential if Equipted.Change out Oil (90) Wt.

#17) Replace Drive Belt (Serpitine) or Drive Bels.

This is what i recommend to reduce Uneccessary Break Downs,And Yhis is A Excellent Preventive Maintence.

By running through this list and replacing the neccesary parts. will also save in Future Everything gets more Expensive as the Days Pass.

Hope i've given what you needed.Please let me Know by Voting for the Quality of My Solutions and a Testamony would be Greatly Appreciated.

Thanks From ==d_hubbs

check all the flasher bulbs if one is not working or is faulty the flasher will flash fast change one bulb at a time only,,,,if all the bulbs are good after testing them you need to change the flasher unit as its gone faulty