Jul 312019
 

cracked-flex-plate

I’m hearing a clicking noise in my transmission. Is it supposed to be there because the bottom of the trans is open I can see the flywheel spinning?



No it is not supposed to. This noise can be common to several things.

  • A rock or piece of debris is lodged near the flywheel/Flex-plate
  • One of the torque converter bolts is loose and rubbing against something
  • The flywheel/Flex-plate is cracked

Example of Cracked Flywheel Noise

Jul 312019
 

Chevy Malibu

How do I find an electrical short? The cruise control, radio buttons and headlights go off and on randomly. not always at the same time. Once when I was driving with the cruise on it just stopped working while I was driving. The radio button wont work when the cruise is out. The drivers side low beam light was out for a week, I took it in to get replaced the tech came out and said all the lights are working fine! No explanation or reason why. That is why I believe it is a lose connection or short. Any Ideas? please advise


 

Look for corrosion around the battery and check for loose connections.

Jul 302019
 

Chevy truck

Going down the hwy suddenly oil pressure kinda jumped around a few times then hit 0 had no response from throttle so I put it in neutral and shut her down … since then I have replaced fuel pump relay and oil sending unit and both were bad. Now it will start with starting fluid or gas then die. No pulse from injectors but I do get 12v on them both. I think its worth mentioning a few months prior I noticed a broken ground strap. The one from firewall to back of motor. Was unable to access it and ran the ground up top where the battery ground goes. Have since got it back where it belongs. Had an extra battery cable and used that. Should I swap it for an actual ground strap? And shouldn’t there be 2 grounds back there?



Just need one good ground to engine and one from engine to frame.

As for the injectors. They should have 12V with ignition key on at all times. The ECM sends a negative pulse signal to trigger them on. Check the ECM fuse. And if it checks out OK the next thing to try would be a new ignition control module in the distributor.

How to check injector pulse on your TBI

Jul 292019
 

Chevy Classic

I’m wanting to replace the drivers and passengers airbags on my own. I have took the drivers and passengers airbag out allready. I’m thinking just take the battery out of the car and pulling the fuses that have to do with the airbag. Then reinstall !!! But I want the Airbags to Reset the way they’re suppose to. Could you help me out, it would be greatly appreciated. Michael



Here is what I found in one of the manuals:

Air Bag System Disarming & Arming

Disarming

Zone 3
1. Ensure front wheels are pointed straight-ahead.
2. Turn ignition key off and remove ignition key from switch.
3. Remove access panel from lefthand instrument panel wiring harness junction block.
4. Remove AIR BAG fuse from junction block.
5. Remove CPA cover from steering wheel module coil connector. Connector is located above lefthand instrument panel wiring harness junction block.
6. Disconnect steering wheel module coil connector.
Zone 5
1. Ensure front wheels are pointed straight-ahead.
2. Turn ignition key off and remove ignition key from switch.
3. Remove access panel from lefthand instrument panel wiring harness junction block.
4. Remove AIR BAG fuse from junction block.
5. Remove access panel from righthand instrument panel wiring harness junction block.
6. Remove CPA (CPA) cover from instrument panel module connector. Connector is located above righthand instrument panel wiring harness junction block.
7. Disconnect instrument panel module electrical connector.

Arming

Zone 3
1. Connect steering wheel module coil connector.
2. Install CPA cover onto steering wheel module coil connector. Connector is located under lefthand side of instrument panel.
3. Install AIR BAG fuse into junction block.
4. Install junction block access panel onto lefthand side of instrument panel.
5. From a safe position at sides of or below air bag modules, turn ignition On.
6. Ensure SIR lamp flashes seven times and turns off.
Zone 5
1. Connect instrument panel module electrical connector.
2. Install CPA cover onto instrument panel module connector. Connector is located above righthand instrument panel wiring harness junction block.
3. Install junction block access panel onto righthand side of instrument panel.
4. Install AIR BAG fuse into lefthand junction block.
5. Install junction block access panel onto lefthand side of instrument panel.
6. From a safe position at sides of or below air bag modules, turn ignition On.
7. Ensure SIR lamp flashes seven times and turns off.
Jul 252019
 

2008 Chevy ImpalaLast week something was put in my gas tank while I was at work. I am wondering if there is a way to get my car back up and running. I drove it for approx half a mile before it stalled out. Not sure what was put in it, could of been a number of things. But I do know that it was fluid because my gas gauge was about a quarter of a tank more than what I had in it before this occurred.



First of all sorry to hear that. To be on the safe side, you would need to have the fuel tank drained and the fuel filter replaced. The fuel tank may need to be flushed and the fuel lines flushed as well. Then of course fresh fuel put back in the tank and the fuel injectors tested.

Jul 122019
 

2001 Chevy Silverado

Replaced ignition lock cylinder and housing security light came on. Reset the passlock, now it cranks but won’t start. And I still have to take the key in and out and play with it to work even though I have a brand new switch. Also when we shut the door the odometer and battery light stays on. It stays on while driving the battery light.



I am thinking the when you turn the key and it will not crank that may be getting to the starter but not cranking. (bad starter) and it is just coincidental that playing around with the key appears to be the solution to get it to crank. This is assuming the ignition key does not have a chip in it.

The good news is that you can test to see if this is the case. Confirm a good battery ground on the starter. Have someone hold the ignition key in the start position the next time it will not crank. Then check for battery positive at the “S” terminal. If you see battery positive, replace the starter.

The battery light being on while driving would indicate and fault in charging the battery. This can be from a bad cell in the battery, poor connections between the battery and alternator or a faulty alternator.

Jun 272019
 

2006 Chevy Silverado

2006 Chevy Silverado extended cab, 4×4 5.3L v8 with flex fuel would turn over, but not start or die immediately. Looked online and said to disconnect battery and turn key to run a couple time. Vehicle started after, however windows, AC and radio still do not work. Tried two different BCM’s and did not fix the problem. Also looked for the master fuse, however, even though there is a slot for one, it is not installed. The fuse diagram shows it, however it is outlined in dashes, which I take to mean there may not be one equipped. Am I correct on that? Also any ideas on what else could be causing the issue? Could sure use the advice, it’s my sons truck and he just started working



Fisrt I like to check the each system curcuit for anything that is common.

  • Air Conditioning fuses – hvac 1, hvac/ecas, blwr, IGN E, a/c comp, ign B, stud#1, htr a/c, blower – Ground G203, G200, G104 – HVAC Control Module and BCM
  • Windows only get power from BCM. No fuses involved. Ground- G306, G305
  • Radio – radio fuse, radio amp,  powered thorugh BCM – Ground from G203

FUSES YOU NEED TO CHECK

So you are right in thinking BCM as this is the common between these systems. The BCM Has several fuses TBC ASSY, TBC IGN 0, TBC IGN 1,  TBC 2C, TBC 2A and TBC BATT

Fuse Location

Inside Panel fuses: TBC 2C, TBC 2A, TBC 2B, TBC ACCY and TBC IGN 0

Underhood Fuse Block fuses: TBC IGN 1 and TBC BATT

May 072019
 

Chevy Astro

I need to replace the fuel pump. Is there an easy way to do this on my Astro van ?



Sure. Pay someone else to do it would be the easiest way. There are some that will cut a hole in the floor, but I do not recommend it.

To do it yourself you will need to drop the gas tank. This will allow access to the fuel pump module located in the top of the gas tank.

Fuel Pump Replacement

Astro & Safari

  1. Release fuel system pressure.
  2. Empty fuel tank into a suitable safety container, then support tank with suitable lowering equipment.
  3. Disconnect fuel tank attaching straps.
  4. Lower tank slightly, then disconnect all electrical connectors, ground strap and hoses from fuel tank.
  5. Lower fuel tank from vehicle.
  6. Remove sender unit and pump assembly by turning lock ring counterclockwise using cam lock removal tool No. J-36608 and J-24187, or equivalent.
  7. Lift sender/pump unit from tank, then remove pump from sending unit, using caution not to damage the rubber insulator or the strainer.
  8. Reverse procedure to install.

Fuel Pump Replacement Labor Hours

 
  Model Year Skill Code Factory Time LABOR Time  
FUEL PUMP, R&R          
 Astro, Safari,          
  In Tank …………………………. 1996-00   1.5 2.1  
 
NOTES FOR: FUEL PUMP, R&R
Does Not Include: Drain & Refill Fuel Tank.
May 032019
 

 Chevy Malibu

About 3 months ago started acting like no power for about one second then would kick back in. About two weeks ago it started not wanting to shift into 4th gear and after two less than a mile drives since it jerks like a manual first time learning driver shifting into 4th gear (mostly in auto not so much when in manual mode). Once into 5th gear it’s fine as like 1-3rd gears. Just going into 4th. I’m disabled and need to get this fixed doe my weekly doctor’s visits. One mechanic said need new transmission, another said “it’s normal and gas saver lol” which we know that’s not the case if it’s never done it before. Ive read a wave plate or solenoid. Did find one very very very small hose leaked front drivers side lower hose by front quarter panel / bumper area but it’s so minute it’s not low. Don’t want to buy new transmission if not necessary. Thank you for your time. Exhausted Grammy.



The best first course action would be to have the transmission codes read at a Transmission specialty shop. This should tell you the exact problem area. If the transmission fluid color looks good, my guess would be a faulty/sticking solenoid. This is a common failure part that exhibits the symptoms you are describing.