gm code p1518-----Need help fast! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

yellowGT · 11-23-2009, 08:11 PM

Here's is the situation.....We have a 2001 suburban 1500 with the 5.3 if that matters. We can turn the truck on and drive for a while and then it just shuts off. After waiting a while I can get it started but only with " reduced engine power" on the display screen on the dash. After waiting a while longer we can then turn it on and runs normal. I Researched the code and im getting that its the throttle actuator control module. How do I fix this or has anyone ran into this problem before. Need help pretty quick since its wifes truck and uses truck to bus our kids around. Thanks.

***Josh*** · 11-23-2009, 08:33 PM

Check the ground wire on the drivers side back of the head. They tend to brake and will set that code. Also check the yellow wire coming out of the throttle body from the connector to 12" or so back. I've had modules, broken wires, and the throttle body set that code before... The most likely is a broken wire.

***Josh*** · 11-23-2009, 08:34 PM

Also check your battery connections etc. Does it spin over after ti stalls out or does it just die completely?

yellowGT · 11-24-2009, 03:53 AM

Yes it will spin over after it dies but wont start. If it does it will be with reduced power so I shut it off and wait till it starts and revs up normally.

The ground to what head? Not sure what you are saying here.

Shon · 11-24-2009, 11:02 AM

Ground for all the sensors is on the passenger side head, back side of it next to firewall.

STOCKISH · 11-24-2009, 09:45 PM

See if this helps

http://www.identifix.com/hotline_for...&ROID=18443064

yellowGT · 12-03-2009, 09:46 PM

gave up and took it to the shop. After scanning and reading codes they concluded that the pcm is bad because its throwing random codes out and not communicating like it should. That being said I went and bought a pcm from a friend of mine for a real good price but not I dont know if I could just plug it in and it will work or if it has to be reprogrammed. If it has to be reprogrammed could anyone here tell me why and how that is done?

Shon · 12-04-2009, 10:02 AM

The only think you might want to do is to have the VIN set for your truck, that way if you have to take it in for anything they will match but if out of warranty that dont matter.

If the PCM is from the same type of truck you have then it will work, ie your truck is throttle cable, is the PCM from a DBW truck, if so, that is not a plug and play deal.

11-23-2009, 08:11 PM	#1
yellowGT Registered User Join Date: Jan 2006 Location: Garland, TX Posts: 970	gm code p1518-----Need help fast! Here's is the situation.....We have a 2001 suburban 1500 with the 5.3 if that matters. We can turn the truck on and drive for a while and then it just shuts off. After waiting a while I can get it started but only with " reduced engine power" on the display screen on the dash. After waiting a while longer we can then turn it on and runs normal. I Researched the code and im getting that its the throttle actuator control module. How do I fix this or has anyone ran into this problem before. Need help pretty quick since its wifes truck and uses truck to bus our kids around. Thanks. __________________ '84 swb chevy '69 swb chevy '68 swb chevy '95 Impala ss-sold '89 chevy crew cab dually 3+3

11-23-2009, 08:33 PM	#2
*Josh* He's got mean nasty FANGS! Join Date: Dec 1999 Location: Rockwell, NC Posts: 6,514	Re: gm code p1518-----Need help fast! Check the ground wire on the drivers side back of the head. They tend to brake and will set that code. Also check the yellow wire coming out of the throttle body from the connector to 12" or so back. I've had modules, broken wires, and the throttle body set that code before... The most likely is a broken wire. __________________ 2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com

11-23-2009, 08:34 PM	#3
*Josh* He's got mean nasty FANGS! Join Date: Dec 1999 Location: Rockwell, NC Posts: 6,514	Re: gm code p1518-----Need help fast! Also check your battery connections etc. Does it spin over after ti stalls out or does it just die completely? __________________ 2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com

11-24-2009, 03:53 AM	#4
yellowGT Registered User Join Date: Jan 2006 Location: Garland, TX Posts: 970	Re: gm code p1518-----Need help fast! Yes it will spin over after it dies but wont start. If it does it will be with reduced power so I shut it off and wait till it starts and revs up normally. The ground to what head? Not sure what you are saying here. __________________ '84 swb chevy '69 swb chevy '68 swb chevy '95 Impala ss-sold '89 chevy crew cab dually 3+3

11-24-2009, 11:02 AM	#5
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: gm code p1518-----Need help fast! Ground for all the sensors is on the passenger side head, back side of it next to firewall. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

11-24-2009, 09:45 PM	#6
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: gm code p1518-----Need help fast! See if this helps http://www.identifix.com/hotline_for...&ROID=18443064 __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

12-03-2009, 09:46 PM	#7
yellowGT Registered User Join Date: Jan 2006 Location: Garland, TX Posts: 970	Re: gm code p1518-----Need help fast! gave up and took it to the shop. After scanning and reading codes they concluded that the pcm is bad because its throwing random codes out and not communicating like it should. That being said I went and bought a pcm from a friend of mine for a real good price but not I dont know if I could just plug it in and it will work or if it has to be reprogrammed. If it has to be reprogrammed could anyone here tell me why and how that is done? __________________ '84 swb chevy '69 swb chevy '68 swb chevy '95 Impala ss-sold '89 chevy crew cab dually 3+3

12-04-2009, 10:02 AM	#8
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: gm code p1518-----Need help fast! The only think you might want to do is to have the VIN set for your truck, that way if you have to take it in for anything they will match but if out of warranty that dont matter. If the PCM is from the same type of truck you have then it will work, ie your truck is throttle cable, is the PCM from a DBW truck, if so, that is not a plug and play deal. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap



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