Wont Start

30

Asked by Ryan Jul 22, 2018 at 05:12 PM about the 2007 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

I have a 2007 Chevy Tahoe LT, approx 200k miles.

Here is the story. My girlfriend was driving down highway, she heard a noise
like she ran over something and had a flat tire, immediately pulled over to
the side of the road at the same time Traction Control and Stabilitrack turned
off and the check engine light came on.

When she tried to start the car back up, nothing happened.
I arrived and checked engine codes before towed, came up CYLINDER #1
misfire. Plug, wire and coil are ok no breaks no burns.

Towed home.

Attempted to start, and you can hear the started want to engage, but you
either just hear the spin or a click. I took a breaker bar and turned crank
shaft while transmission is in neutral, it turns so I don't think the block is
seized. Checked all the hoses and vacuums, spark plugs and boots and
coils seem fine.

I erased codes and still nothing, no new codes either. Help would be great!

Also nothing wrong with fluids, oil clean and normal viscosity, coolant
DEXCOOL ok, muffler bearings and carb belts good to go too. Topped off
blinker fluids.

5.3L V8 4WD

12 Answers

27,570

Make sure the battery has a full charge and battery connections all good, at both ends, not just at the battery. Does the starter motor crank the engine or not? By reading your post, I'm not sure? If it cranks good but won't start, have a helper crank it while you check for spark at the plugs. Also, use a gage and check proper fuel pressure and fuel injector pulse. If you have serpentine belt, it's still there? Not carb belt. If you have distributor does the rotor turn when you crank it? I enjoyed the last paragraph in your post. lol

1 people found this helpful.
30

So far Battery was charged, but might have a bad cell so I am going to replace anyways. All wires seemed to have had a good connection. All you can hear is the starter try to turn but it is not cranking the engine. Serpentine belt intact. When I placed in Neutral I spun the crankshaft to check if engine seized and so far it turns I dont hear any knocking or odd sounds. Fuel pressure checks ok in the proper ranges I saw online.

30

BUt over all the started is not engaging the flywheel but never had a problem or struggle starting

27,570

It appears you have coil on plug or near plug ignition, so no distributor. You may need to check cylinder compression and timing chain?

1 people found this helpful.
30

yeah Im hoping its something simple. Im going to try to pull the started and have them bench test it to see if solenoid is bad. but it doesnt sound sluggish or anything

30

yes I have a coil on the top of the valve cover with a boot to coil on the spark plug

1 people found this helpful.
27,570

If you think starter motor problem, sometimes, you can take starter motor off, lay it on the ground, hook up jumper cables properly from charged battery to starter motor. It should kick out the drive gear and spin. You can check the teeth on flywheel and starter motor drive gear?

30

UPDATE: So recharged the battery, turned ignitiion, starter engaged and spun the flywheel & crankshaft. Pumped the gas pedal. nothing. as engine is turning I do not hear anything slapping like a timing chain or something. So now checking to see if I get spark or fuel

30

checked the pressure at the fuel rail on the top of the block. getting fuel. so perhaps no spark. im taking the battery right now to get it bench tested, although 12v is reading maybe a cell is bad not giving it enough cranking amps

2 people found this helpful.
30

UPDATE, so I ordered the Harmonic Balancer puller and removed. Opened up the timing chain cover and OOPS found the problem. The plastic guide for the tensioner and a few teeth on the upper sprocket (cam shaft sprocket) broke off. Now I am having the following problems and perhaps you know a technique since I have tried viewing YouTube videos, but people skip this step or they just talk too much about something other than the issue the video is on. So the oil pump on the crankshaft sprocket, is connected to the oil tube to the bottom of pan. Is there a way to remove the oil pump without removing the entire oil pan? Also from looking at the specs and such, I have used a wrench and turned the top sprocket over and over and over again and the position tabs (the dots) on the cam sprocket and crank sprocket never align, which leads me to believe that the chain has jumped the sprocket (although still attached) so of course once I replace the sprockets, chain, guides and all I would assume I have to manually align the sprockets to function properly, or is there another step Im missing?

650

Yes the chain has jumped over the sprocket ( that’s why teeth are broke off ) . Need to replace everything and yes the dots on sprockets have to match up if your not sure about the dots have someone who is look at it before you put the cover back on and you can line them up , then put everything else back and fire that mother up.

Your Answer:

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 904 nationwide Tahoe listings starting at $11,900.

Postal Code:

CarGurus Experts

  • #1
    John Carson
    Reputation
    3,580
  • #2
    Rowefast
    Reputation
    2,320
  • #3
    Gene Arnett
    Reputation
    2,170
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Yukon
19 Great Deals out of 915 listings starting at $1,225
Used Chevrolet Suburban
10 Great Deals out of 543 listings starting at $7,500
Used Cadillac Escalade
21 Great Deals out of 379 listings starting at $6,900
Used Chevrolet Silverado 1500
195 Great Deals out of 5,967 listings starting at $2,975
Used Ford Expedition
22 Great Deals out of 821 listings starting at $7,888
Used Ford F-150
321 Great Deals out of 15,103 listings starting at $1,712
Used GMC Yukon XL
15 Great Deals out of 671 listings starting at $13,950
Used Toyota Sequoia
4 Great Deals out of 72 listings starting at $16,489
Used GMC Sierra 1500
143 Great Deals out of 7,206 listings starting at $3,950
Used Toyota 4Runner
12 Great Deals out of 309 listings starting at $9,700
Used Dodge Durango
41 Great Deals out of 2,265 listings starting at $5,500
Used Ford Explorer
87 Great Deals out of 2,048 listings starting at $2,999
Used Jeep Grand Cherokee
122 Great Deals out of 3,221 listings starting at $4,995
Used Chevrolet Silverado 2500HD
18 Great Deals out of 1,279 listings starting at $9,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.