how do i fix this code? P1626

chevyDime98 · 09-16-2007, 04:13 PM

i scanned my truck and came up with this

P1626 Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction

what n the world does this mean and how can i fix it cause my truck runs like crap

chevyDime98 · 09-16-2007, 11:21 PM

mods or anyone who works at a gm dealership i could really use some help with this one.

rockyroad217 · 09-17-2007, 12:49 AM

here man..dont know if it will help, but looks useful http://www.gearchatter.com/viewpost14016.php

rockyroad217 · 09-17-2007, 12:51 AM

oh and this too lol http://findarticles.com/p/articles/m...1/ai_n15871185

chevyDime98 · 09-17-2007, 01:38 PM

wow thats some tuff stuff to understand.

ok so where is the
VTD?
BCM?
PCM?

ka_jd7and1 · 09-17-2007, 02:58 PM

body control module (BCM)
powertrain control module (PCM)

Those were in the 2nd article.

I'm guessing VTD would be Passlock, GM's Vehicle Theft Deterrent (VTD), but that's purely a guess.

chevyDime98 · 09-17-2007, 07:48 PM

haha i read the pages, i asked where? as in can i located them on my truck to see if anything is wrong. were are they located?

leroyme · 09-17-2007, 08:01 PM

The BCM and PCM are under your dash in the center. Its over the hump in your floor, directly under your stereo/ac area. I would bet your passlock is screwed up. Sorry I can't tell you where to go from there.

I got to mine from the driver's side, WAY up under there.

chevyDime98 · 09-17-2007, 08:19 PM

do i have to take the dash out or can it be reached from underneath. also what does it look like/what am i looking for?

leroyme......why did u have to/what did u do to yours?

lampug · 09-17-2007, 08:27 PM

itcould be your ignition, bcm, or wires. that code means that the pcm is not receiving the signal from the bcm to turn on your injectors. the bcm needs the signal from your ignition lock cylinder. if it doesnt see the same key on signal as the previous then the bcm will prevent the engine from starting. these parts are not cheap. i think the ignition goes for 400.00 and the bcm sells for 300.00-400.00. your most likely cause is the ignition.

chevyDime98 · 09-17-2007, 08:35 PM

my truck starts and runs great......until u go under a load or are on the freeway then it studders and seems to not get enough gas......n other words, im still driving it to school and work everyday, its just a pain in the ass cause its hard to get up to speed and merge. its also embarassing cause i have exhaust thats makes it noticable to others that it runs like crap lol

chevyDime98 · 09-17-2007, 11:04 PM

anyone have a pic or discription of the bcm? i need to know what im looking for lol. thanks

fishindabay · 09-18-2007, 06:34 AM

if you're having this stumble/hesitation problem at highway speeds, it's not caused by that DTC. the diagnostic for that DTC runs when the ignition switch is turned to crank. the BCM talks to the PCM and decides whether the PCM will provide fuel. if you have a remote start, this code is commonly in every PCM i've gone into.

as far as you problem with the truck... i'd check your fuel filter. you didn't mention if it is a 4.3, or 2.2... but either way i've seen a ton of drivability problems due to clogged fuel filters. if its a 4.3, i'd check the cap and rotor for a "snowstorm"... thats when all of the terminals in the cap and rotor have this white corrosion stuff all caked onto the terminals

chevyDime98 · 09-18-2007, 01:45 PM

well i got a 2.2 lol this is in the 2.2 section, and when my truck was scanned, it currently has this code P1626. i have replaced the fuel filter,cat, plugs, wires, coils, cleaned egr carbon...

either way id like to see what the bcm looks like. what am i looking for lol

illest G · 09-18-2007, 01:49 PM

hey chris you have a scanner? could it scan for why my abs light is on?

chevyDime98 · 09-18-2007, 02:20 PM

joe help me with the scan, his brother has one

ka_jd7and1 · 09-18-2007, 03:29 PM

Quote: Originally Posted by chevyDime98

haha i read the pages, i asked where? as in can i located them on my truck to see if anything is wrong. were are they located?

Sorry, reading > me.

lampug · 09-18-2007, 07:54 PM

bcm should be mounted under the drivers kick panel. its hiding under the steering column.

chevyDime98 · 09-19-2007, 01:56 AM

cool, what does it look like.

09-16-2007, 04:13 PM	#1
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	how do i fix this code? P1626 i scanned my truck and came up with this P1626 Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction what n the world does this mean and how can i fix it cause my truck runs like crap
	[Reply w/Quote]

09-16-2007, 11:21 PM	#2
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 mods or anyone who works at a gm dealership i could really use some help with this one.
	[Reply w/Quote]

09-17-2007, 12:49 AM	#3
rockyroad217 got me some 20s Age: 26 Join Date: Oct 2005 Posts: 4,005 Location: Pine Bluff, AR User is: OffLine	Re: how do i fix this code? P1626 here man..dont know if it will help, but looks useful http://www.gearchatter.com/viewpost14016.php
	[Reply w/Quote]

09-17-2007, 12:51 AM	#4
rockyroad217 got me some 20s Age: 26 Join Date: Oct 2005 Posts: 4,005 Location: Pine Bluff, AR User is: OffLine	Re: how do i fix this code? P1626 oh and this too lol http://findarticles.com/p/articles/m...1/ai_n15871185
	[Reply w/Quote]

09-17-2007, 01:38 PM	#5
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 wow thats some tuff stuff to understand. ok so where is the VTD? BCM? PCM?
	[Reply w/Quote]

09-17-2007, 02:58 PM	#6
ka_jd7and1 is a fungineer Age: 27 Join Date: Jun 2005 Posts: 6,080 Location: Bakersfield, CA User is: OffLine	Re: how do i fix this code? P1626 body control module (BCM) powertrain control module (PCM) Those were in the 2nd article. I'm guessing VTD would be Passlock, GM's Vehicle Theft Deterrent (VTD), but that's purely a guess.
	[Reply w/Quote]

09-17-2007, 07:48 PM	#7
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 haha i read the pages, i asked where? as in can i located them on my truck to see if anything is wrong. were are they located?
	[Reply w/Quote]

09-17-2007, 08:01 PM	#8
leroyme Blazin on 8! Age: 32 Join Date: Jan 2004 Posts: 1,781 Location: Wichita, KS User is: OffLine	Re: how do i fix this code? P1626 The BCM and PCM are under your dash in the center. Its over the hump in your floor, directly under your stereo/ac area. I would bet your passlock is screwed up. Sorry I can't tell you where to go from there. I got to mine from the driver's side, WAY up under there. Last edited by leroyme; 09-17-2007 at 08:02 PM.
	[Reply w/Quote]

09-17-2007, 08:19 PM	#9
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 do i have to take the dash out or can it be reached from underneath. also what does it look like/what am i looking for? leroyme......why did u have to/what did u do to yours?
	[Reply w/Quote]

09-17-2007, 08:27 PM	#10
lampug Registered User Join Date: Apr 2006 Posts: 476 Location: tampa User is: OffLine	Re: how do i fix this code? P1626 itcould be your ignition, bcm, or wires. that code means that the pcm is not receiving the signal from the bcm to turn on your injectors. the bcm needs the signal from your ignition lock cylinder. if it doesnt see the same key on signal as the previous then the bcm will prevent the engine from starting. these parts are not cheap. i think the ignition goes for 400.00 and the bcm sells for 300.00-400.00. your most likely cause is the ignition.
	[Reply w/Quote]

09-17-2007, 08:35 PM	#11
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 my truck starts and runs great......until u go under a load or are on the freeway then it studders and seems to not get enough gas......n other words, im still driving it to school and work everyday, its just a pain in the ass cause its hard to get up to speed and merge. its also embarassing cause i have exhaust thats makes it noticable to others that it runs like crap lol
	[Reply w/Quote]

09-17-2007, 11:04 PM	#12
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 anyone have a pic or discription of the bcm? i need to know what im looking for lol. thanks
	[Reply w/Quote]

09-18-2007, 06:34 AM	#13
fishindabay Registered User Age: 27 Join Date: Sep 2005 Posts: 647 Location: southold, NY User is: OffLine	Re: how do i fix this code? P1626 if you're having this stumble/hesitation problem at highway speeds, it's not caused by that DTC. the diagnostic for that DTC runs when the ignition switch is turned to crank. the BCM talks to the PCM and decides whether the PCM will provide fuel. if you have a remote start, this code is commonly in every PCM i've gone into. as far as you problem with the truck... i'd check your fuel filter. you didn't mention if it is a 4.3, or 2.2... but either way i've seen a ton of drivability problems due to clogged fuel filters. if its a 4.3, i'd check the cap and rotor for a "snowstorm"... thats when all of the terminals in the cap and rotor have this white corrosion stuff all caked onto the terminals
	[Reply w/Quote]

09-18-2007, 01:45 PM	#14
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 well i got a 2.2 lol this is in the 2.2 section, and when my truck was scanned, it currently has this code P1626. i have replaced the fuel filter,cat, plugs, wires, coils, cleaned egr carbon... either way id like to see what the bcm looks like. what am i looking for lol
	[Reply w/Quote]

09-18-2007, 01:49 PM	#15
illest G Negative 10 Age: 25 Join Date: May 2007 Posts: 22,345 Location: vacaville User is: OffLine	Re: how do i fix this code? P1626 hey chris you have a scanner? could it scan for why my abs light is on?
	[Reply w/Quote]

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09-18-2007, 02:20 PM	#16
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 joe help me with the scan, his brother has one
	[Reply w/Quote]

09-18-2007, 03:29 PM	#17
ka_jd7and1 is a fungineer Age: 27 Join Date: Jun 2005 Posts: 6,080 Location: Bakersfield, CA User is: OffLine	Re: how do i fix this code? P1626 Quote: Originally Posted by chevyDime98 haha i read the pages, i asked where? as in can i located them on my truck to see if anything is wrong. were are they located? Sorry, reading > me.
	[Reply w/Quote]

09-18-2007, 07:54 PM	#18
lampug Registered User Join Date: Apr 2006 Posts: 476 Location: tampa User is: OffLine	Re: how do i fix this code? P1626 bcm should be mounted under the drivers kick panel. its hiding under the steering column.
	[Reply w/Quote]

09-19-2007, 01:56 AM	#19
chevyDime98 Sik-98 Age: 26 Join Date: Jul 2004 Posts: 3,809 Location: SJ, Ca. (408) User is: OffLine	Re: how do i fix this code? P1626 cool, what does it look like.
	[Reply w/Quote]