Top 10 2002 Chevrolet Suburban Questions & Answers

go to the back of the truck near the gas tank and listen for the pump to run while some one turns the key to the on position not Start but on. If you do not hear the pump it is probubly bad.

my keyless entry does not work and i change my battery for both the remote is there another battery or fuse

Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.

This code is a processor error code indicating a problem with teh PCM.
Most likely you will need to replace the pcm. Factory warranty (if it applies) is 8 years 80,000 miles.

Unfortunately, this problem could be caused by a number of things. A fuel pressure regulator is not usually one of them. The fuel pressure regulator will help to, essentially, regulate and change the pressure of the fuel in the fuel rail as the engine RPMs change. This change is usually minor, however, and will not interfere with the initial startup of the vehicle. I can give you a few basic ideas of where to look, I have seen this same problem on other 5.3L motors, but I have also seen it on many other cars as well, and the problems never seem to be consistent. If the truck has had a fresh tune up, and the filters have all been changed (most notably, the fuel filter) then the first thing to look at is going to be the throttle body. On the intake, there is a butterfly valve- if this is all gummed up with carbon or other deposits, clean it! (Note, it is best to wipe down well with a clean cloth, be as gentle as possible. Hold the butterfly valve open by hand or have a friend hold the gas pedal down (with the truck off, of course), and wipe this down thoroughly. You will have to take off the air cleaner and tubing first, in order to reach this. If this doesn't help, you could have a vacuum leak. You could have a bad Throttle Position Sensor, or a bad Mass Air Flow sensor. If your fuel return line is clogged or vapor locked, it will make it harder to start the vehicle. If the fuel pump is putting out sufficient pressure, but not the intial sufficient volume you need, that could also be a problem. There are a LOT of things that could cause this realistically, but the best thing to do is to eliminate the easiest problems one by one. Keep up on the maintenance, routinely check your filters and spark plugs, and DO NOT use cheapo parts. If you determine that it is not a simple failure, or are not comfortable with testing fuel pressure or volume output, checking the intake manifolds for minor vacuum leaks, etc. it may be best to take it to a professional who is trained to do that. Look for a shop in your area with a good reputation, as this isn't just a routine problem, and will take good diagnostic abilities and a skilled technician to fix it.

Thanks for asking!

I think that you are talking about the OBD Code P0446, here's the "official" word on the subject. I'm sure this will take care of it for you.

Subject: LR4, LM4, LM7, L59, LQ9, LQ4, L18 DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Service Engine Soon (SES) Lamp Illuminated (Replace Vent Solenoid and Bracket) #04-06-04-055A - (03/20/2006)

Models:
2000-2003 Cadillac Escalade
2002-2003 Cadillac Escalade EXT
2003 Cadillac Escalade ESV
2000-2003 Chevrolet Suburban, Tahoe
2002-2003 Chevrolet Avalanche
2000- 2003 GMC Yukon, Yukon XL

with 4.8L, 5.3L, 6.0L, 8.1L Vortec™ V8 Engine (VINs V, P, T, Z, N, U, G -- RPOs LR4, LM4, LM7, L59, LQ9, LQ4, L18)
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This bulletin is being revised to add updated warranty information and enhance the content. Please discard Corporate Bulletin Number 04-06-04-055 (Section 06 -- Engine/Propulsion System).
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Condition
Some customers whose vehicles are operated in dusty type environments, such as farming or mining off-road type applications, may comment about the illumination of the instrument panel SES light, with a DTC of P0446 (Restricted/Blocked EVAP Vent Path) being set.

Cause
Dirt and dust intrusion into the EVAP canister vent solenoid, resulting in restricted air flow, may cause this condition.

Correction
DO THIS: Replace the EVAP vent solenoid with a more robust vent solenoid.

DON'T DO THIS: DO NOT Replace the EVAP canister or other EVAP parts.

After following the Service Manual diagnostic P0446 and determining that the EVAP canister vent valve is the cause of the SES light, replace the existing EVAP canister vent solenoid and bracket. This new vent solenoid has an enhanced filtering capability and a filter element that can be easily removed and cleaned. To ensure correct installation, follow the procedure below.

Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Remove the bolt retaining the vent valve bracket.
Disconnect the electrical connector.
Disconnect the canister vent valve hose.
Install the new vent valve bracket, P/N 15105605, to the vehicle with the retaining bolt.
Tighten
Tighten the bracket mounting bolt to 12 N·m (106 lb in).

Install the new vent valve, P/N 10382105, to the bracket.
Reinstall the electrical connector.
Reinstall the canister vent valve hose.
Lower the vehicle.
Clear the DTC.
Parts Information
Part Number
Description
Qty

15105605
Bracket, EVAP Emission Canister Purge
1

10382105
Valve, EVAP Emission Canister Control
1


Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time

J6441
Valve, Evaporative Emission Canister Vent Solenoid and Bracket - Replace
Use Published Labor Operation Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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© Copyright General Motors Corporation. All Rights Reserved.
END QUOTE

Hope helps with this (remember rated this) Good luck.

I would use the recommended oil witch I believe is 5w30w oil.

First you need to program the car with garage door remote, then program the garage door unit to the car. Hold Down garage door remote button and button of your choice in the car, the small light on the car will blink when it has learned it's code. Then press program button on garage door unit , within 15 seconds press and hold the button in the car that you programmed , when the the light starts to blink again, it should work.

It is possible that while making the knock sensor repairs you damaged a spark plug wire. Folks don't change these often, and with the high temps under hood on modern lean running engines, these should be changed every three or four years.

their is no reset / inertia switch on suburban only fuses and relays ---will need to test fuses relays wiring connections and or pump for where failure is