I'm trying to set the timing on my 95 suburban. When I go to use the GMTD program the truck dies.

It is currently throwing a code saying the pump timing is off.

When I tried to do this a few weeks ago I started off with around a -.3 or something in that area. Then it went to a .5 and now it either will say 2.02 or 0 depending on what it feels like putting up.

I am getting very frustrated and am need of some help.

Thanks.

I rotated teh pump towards teh driver side and it doesn't die now.

-1.85

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