99 sierra turns over but wont start

1999 GMC SIERRA

JMASCHLE

MEMBER
2 POSTS
FOLLOW

5.4L V8 98K Mi. we have fuel pressure, and spark. But this truck has always intermittently sported a 'Security' light on the message center. Didnt seem to effect anything.
But last time this happened, we used a different key - and the problem went away (still had intermittent security lights tho).
Right now it just acts like it starts, but then sounds fuel starved and dies.
I used to like this truck.

Aug 16, 2007 at 9:59 AM

SERVICE WRITER

CAR REPAIR CONTRIBUTOR
9,123 POSTS

I would start by checking for codes, in the event that it is an anti-theft mal-function.

IS the fuel pressure in specification, as it is critical; not just present?

Aug 16, 2007 at 10:10 AM

JMASCHLE

MEMBER
2 POSTS

thanks for your reply.

yes 60psi.

Also, after beating on it for about 30 minutes, i walked away - and an observer said the alarm turned on for about a minute then shut off. I dont think i had the fob in my pocket - and that is the only time it has done that that i know of.
Also, this does not use a chip key.

Aug 16, 2007 at 11:01 AM

SERVICE WRITER

CAR REPAIR CONTRIBUTOR
9,123 POSTS

[quote:571c906bd9="jmaschle"]t changed the tilt-wheel and it started right up!

Sure would like to see a detail drawing of the routing of the passlock system through that steering column…I suspect a bare wire rubbing on something…maybe I should disassemble myself?

Anyway – thanks again for your assistance.

(I think I will keep the truck a bit longer.)

Jeff
.[/quote:571c906bd9]

It's going to be a time bomb waiting to not start at a later date if you don't address it I would think.

Aug 16, 2007 at 7:58 PM

SERVICE WRITER

CAR REPAIR CONTRIBUTOR
9,123 POSTS

Aug 16, 2007 at 8:03 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.