can the air intake heater be eliminated on 2002 duramax

Asked by Jul 08, 2015 at 03:59 PM about the 2002 Chevrolet Silverado 2500HD 4 Dr LS 4WD Extended Cab LB HD

Question type: Car Customization

I have removed the air intake heater and put a plug in it's place. The "service engine soon" light was cleared, but it came back on later.  Is it possible to stop the light from coming on permanently and still diagnose other engine problems?

5 Answers

26,525

did you put in the right plug?something has to flow thru it. >This plug replaces the air intake heater for less restriction in your intake. The '99.5 and up 7.3L Powerstrokes and the 2001-2005 6.6L Duramax engines are equipped with a Air Intake(Grid) Heater as well as a glowplug circuit. The Air Intake heater is not needed in most cases and was designed for extended idleing. This Air Intake heater blocks approximately 20% of the airflow through the intake manifold. By replacing the Air Intakeheater with this plug, you increase airflow -- allowing better combustion. This WILL NOT affect cold starts. This fix does NOT cut off heat to the cab.

2 of 2 people found this helpful.

Initial problem diagnosed as being AIH relay and since I didn't need the AIH I replaced it with a drain plug. Trying to save money and improve performance.

26,525

Remove the black wire (ground). You can leave this hanging in the valley as it is only a ground wire or you can trace it back to its origin and remove it completely. Remove the red wire (hot) from the air intake heater. Follow the red wire back to where it terminates at an electric solenoid. You'll need to remove this end of the red wire as well. did you >>>> There is a blue wire attached to the same terminal post on the solenoid. Leave this blue wire attached. If you do not leave the blue wire attached, a diagnostic scanner cannot do a full contribution test on your vehicle. Do not ignore this.

1 of 1 people found this helpful.
Best Answer

Attempted to follow your directions. This is what I seen - wire connected to top of air intake heater is black and it terminates at a solenoid located below a solenoid with large red cable attached to it, where it connects with a small pink wire, with a blue sheath covering and a plug in connection on it. The solenoid with the red wire attached has 2 blue wires connected to it coming from the relay box. I am confused!

Why doesn't my duramax 6.6 not want to start after 0 degrees.

Your Answer

Add photo

Related Questions

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 29,344 nationwide Silverado 2500HD listings starting at $2,650.

ZIP:

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 480
#2 piocon
piocon
Reputation 280
#2 Tom Demyan
Tom Demyan
Reputation 280
View All

Related Models For Sale

Used GMC Sierra 2500HD
113 Great Deals out of 13,169 listings starting at $3,900
Used Ford F-250 Super Duty
328 Great Deals out of 43,283 listings starting at $1,250
Used Chevrolet Silverado 1500
2,123 Great Deals out of 183,385 listings starting at $1,900
Used Dodge Ram 2500
154 Great Deals out of 5,098 listings starting at $2,999
Used Ford F-150
2,215 Great Deals out of 180,841 listings starting at $1,500
Used GMC Sierra 1500
780 Great Deals out of 67,901 listings starting at $1,800
Used Chevrolet Silverado 2500
8 Great Deals out of 243 listings starting at $3,995
Used Ford F-350 Super Duty
347 Great Deals out of 23,479 listings starting at $2,990
Used Chevrolet Silverado 1500HD
10 Great Deals out of 267 listings starting at $4,300
Used Toyota Tundra
415 Great Deals out of 33,614 listings starting at $1,999
Used Chevrolet Silverado 3500
33 Great Deals out of 567 listings starting at $3,990
Used Dodge Ram 3500
95 Great Deals out of 2,191 listings starting at $4,993

Used Cars For Sale

2017 Chevrolet Silverado 2500HD For Sale
6 Great Deals out of 15,955 listings starting at $26,729
2016 Chevrolet Silverado 2500HD For Sale
11 Great Deals out of 1,677 listings starting at $25,900
2015 Chevrolet Silverado 2500HD For Sale
45 Great Deals out of 1,761 listings starting at $18,900
2014 Chevrolet Silverado 2500HD For Sale
8 Great Deals out of 510 listings starting at $17,695
2013 Chevrolet Silverado 2500HD For Sale
16 Great Deals out of 899 listings starting at $7,200

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.