when I start my truck it idles fine for 30sconds or so then dies also dies as soon as I press the brake pedal?

Asked by Mar 26, 2015 at 09:49 PM about the 1994 GMC Sierra 1500 C1500 SLE Standard Cab LB

Question type: Maintenance & Repair

I have a 1994 GMC sierra c1500 with the 5.7l All of a sudden now when I start it up it idles
but once I go to step on the brake to put it in gear it imedietly dies on me. I thought it was
fuel pump but I changed pump and fuel lines and it still doing the same thing also if I just
let it sit and idle it will dies within a minute or so but like I said it dies as soon as I touch
the brake also

8 Answers

39,925

Sounds like your torque converter is bad. Generally when you put a vehicle in gear and it dies, it's a bad torque clutch solenoid. Is it actually dying as soon as you hit the brake, or is it when you hit the brake and shift it into gear? Does it also die if you just start it and let it idle for a while?

Thank you but Yes I can get it into gear but dies immediately. Also if I just let it idle in park it will die in a minute or so. But will start right up

50

Dose your truck have a engen computer it would be called an ecm that will cause that problem

1 of 1 people found this helpful.
39,925

Okay, your idle and die issue may be a couple of things. Remove your throttle body and spray it down with throttle body cleaner and remove your IAC and tear it down and clean it also. Remove your MAF and clean that with a can of MAF cleaner. Don't use throttle body cleaner. Just to be safe, I would change out my Engine Coolant Temp sensor also. See if your truck will at least idle and not die after doing that. It may just solve your putting it in gear and die issue as well. Post back with results.

Do you know where the torque converter control solenoid is located on this vehicle? In side trany pan?

39,925

I don't think it's a job you will want to tackle yourself. Here's a link that kind of explains it. http://autorepair.about.com/cs/doityourself/l/aa011703b.htm

39,925

I don't think the older models like you have, have a MAF. Mass Air Flow sensor. Here's a video on things to check and or replace. Pretty good. https://www.youtube.com/watch?v=TDbRw-xEtyI

Sorry guys it took so long to respond and thank you for all the help sad to say it ended up being the fuel pump the first one I put in must of been bad so I took the chance on replacing it and now is running great!

Your Answer

Add photo

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,507 nationwide Sierra 1500 listings starting at $1,800.

ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,260
#2 John Saffrahn
John Saffrahn
Reputation 3,640
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,330
View All

Related Models For Sale

Used Ford F-150
2,127 Great Deals out of 193,349 listings starting at $290
Used Dodge Ram 1500
403 Great Deals out of 10,928 listings starting at $1,000
Used Toyota Tacoma
531 Great Deals out of 42,958 listings starting at $1,995
Used GMC Yukon
405 Great Deals out of 20,427 listings starting at $1,495
Used Chevrolet Tahoe
584 Great Deals out of 32,918 listings starting at $1,500
Used Chevrolet Camaro
354 Great Deals out of 31,326 listings starting at $2,200

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
81 Great Deals out of 44,075 listings starting at $23,368
2016 GMC Sierra 1500 For Sale
88 Great Deals out of 3,510 listings starting at $17,670
2015 GMC Sierra 1500 For Sale
93 Great Deals out of 4,281 listings starting at $16,291
2014 GMC Sierra 1500 For Sale
93 Great Deals out of 4,195 listings starting at $13,995
2013 GMC Sierra 1500 For Sale
55 Great Deals out of 1,944 listings starting at $8,999

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.