How to check codes on 2001 Tahoe got code P0332

[badmix]

There is a check engine light on my G/friends Tahoe. it has 125k miles. 5.3l

Is there a way to turn the couple a certain way to make the light blink and then dicifer the code?

 

[sweetk30]

1996 - up = scanner

prob going to be p0440 or p0442 evap lek detected.

vary comon

 

[Hogback Fabrication]

Yep, you need a scanner, any auto parts store should do it for free.

 

[dhcomp]

Autozone normally has the scanner to rent. Aamco will check it for free if you will listen to their "you must let us fix this or your car is going to blow up and kill your family" sales pitch. Just make sure to get the code from them, not just their diagnosis.

Really, i chose to just buy a basic ODBII scanner. Kragen or harbor freight has them, and they are $40-60 now. Money well spent towards diagnostic equipment that will help you with lots of GM issues on 96 and newer vehicles.

 

[badmix]

Ok, truck went to autozone. pulled a P0332 code. its a knock sensor code. There is a TSB on it, but now ive got questions

1) Will a TSB be taken care of at the dealership on a truck that is 2001

2) Will a fuel filter put in backwards trip this code, I just changed the filter and know it has a flow arrow but thinking back, I dont remember paying attention to this when I put it in. Truck runs fine but on occasion will stumble, could be the knock sensor

3) where is the knock sensor and what to check for on it.

4) Will bad gas and/or bad gas cap cause this code?


I guess its common for ppl to wash their motors to get this sensor wet, but I know for a fact this motor wasnt washed or cleaned. Ill check the connections when I get the chance, but what else to look for? Could the sensor itself just be bad?


Thanks

 

[dhcomp]

Really doubt putting the filter on backwards would cause that code. BUT, i would REPLACE that filter ASAP.

If you just turn it around, all the trapped contaminants will be released into the motor side of the fuel lines.

I would check wiring/mounting of the sensor, but also check the price.

No idea what those go for, but if its cheap, i'd replace it before spending much more thought on it.

Quick call to your dealer's service dept will answer your TSB question.

Good luck

 

[texas4x4rebel]

I used to see this all the time at gm the knock sensor is under the intake the rear hole fills with water and rust the sensor and sets the code. I had to replace it on my 01 serria it's an easy job just the intake gaskets are a little pricey. The tsb is not covered by gm.
Incase u didn't read the tsb it says to silicon the cover on the knock sensor and then silicon a damn around the front of it so that water foes around it.

 

[dhcomp]

I used to see this all the time at gm the knock sensor is under the intake the rear hole fills with water and rust the sensor and sets the code. I had to replace it on my 01 serria it's an easy job just the intake gaskets are a little pricey. The tsb is not covered by gm.
Incase u didn't read the tsb it says to silicon the cover on the knock sensor and then silicon a damn around the front of it so that water foes around it.

Ok, didn't realize where the sensor was located before my last post.

And a silicon dam? Really? Good recommendation gm Can we say bandaid

 

[chalet2506]

Silicone would be a bandaid, JB Weld on the other hand.....

 

[texas4x4rebel]

hope this helps
Document ID #
1999 GMC Truck GMC C Sierra - 2WD Audible Spark Knock (Detonation), MIL Illuminated, DTC P0332 Set (Replace Rear Bank Knock Sensor and RTV Area Around Sensor) #02-06-04-023A

Audible Spark Knock (Detonation), MIL Illuminated, DTC P0332 Set (Replace Rear Bank Knock Sensor and RTV Area Around Sensor) 1998-2002 Chevrolet Camaro, Corvette
1998-2002 Pontiac Firebird
with 5.7L Engine (VIN G -- RPO LS1)
1999-2002 Chevrolet Silverado, Suburban, Tahoe
2002 Chevrolet Avalance
1999-2002 GMC Sierra, Yukon, Yukon XL
2002 Cadillac Escalade, Escalade EXT
with 4.8L, 5.3L or 6.0L Engine (VINs V, T, Z, N, U -- RPOs LR4, LM7, L59, LQ9, LQ4)
This bulletin is being revised to add Cadillac Escalade and Cadillac Escalade EXT to the Models. Please discard Corporate Bulletin Number 02-06-04-023 (Section 6 -- Engine/Propulsion System).
Condition

Some customers may comment on a mild to severe engine ping (commonly referred to as spark knock), usually worse during acceleration and/or an illuminated MIL. Upon investigation, the technician may find DTC P0332 set.
Cause

This condition may be the result of corrosion of the rear bank knock sensor due to water intrusion into the sensor cavity. This condition is more apparent on vehicles in which customers frequently wash the engine compartment.
Correction

Replace the rear bank knock sensor and build a dam (wall) around the sensor using RTV to divert water away from the sensor. Use the procedure and part number listed below.

1. Remove the intake manifold. Refer to the Intake Manifold Replacement procedure in the Engine Controls sub-section of the appropriate Service Manual.
   
   
2. Remove the wiring harness assembly from the knock sensor.
   
   
3. Remove the rear bank knock sensor.
4. Install the new rear bank knock sensor. Tighten Tighten the knock sensor to 20 N·m(15 lb ft).
5. Install the wiring harness assembly to the knock sensor.
   
   
6. Apply a bead of RTV silicone sealant approximately 9 mm (3/8 in) wide and 6 mm (1/4 in) high along the outside edge of the ridge on the engine block valley cover around the rear bank knock sensor. DO NOT form a complete circle. Leave the rear section open as shown.
7. From the underside of the intake manifold, completely remove the rear intake manifold seal (foam material).
8. Install the intake manifold. Refer to the Intake Manifold Replacement procedure in the Engine Controls sub-section of the appropriate Service Manual.

Parts Information

Part Number
Description
Qty
10456603
Sensor, Knock
1
Parts are currently available from GMSPO.
Warranty Information

For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
J4437
(F-Car)
Sensor, Knock -- Replace
1.7 hrs
Add
(1998-1999 F-Car Only)
To Remove EGR
0.2 hr
J4437
(Y-Car)
Sensor, Knock -- Replace
1.6 hrs
J4437
(C/K-Truck)
Sensor, Knock -- Replace
1.5 hrs
Add
(C/K Truck Only)
With Three Piece Engine Covers
0.2 hr
Add
(All)
Diagnosis Time
0.3 hr
Add
(All)
To RTV Area Around Sensor and Remove Intake Manifold Seal
0.2 hr

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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Document ID #
1999 GMC Truck GMC C Sierra - 2WD