Recent content by grw800

I replaced the front output shaft seal on a customer's M1009, and thought I would post up what I learned. And learn I did, since I had to do the job twice! Remove transfer case shield (skid plate). Disconnect front driveshaft from front output yoke. 4 bolts, 5/8" hex size. A big screwdriver...

Excellent; thank you!

+1 on the reverse (left hand) drill bit. Works like a charm for me every time. Another must-have tool for this job is a set of transfer punches to mark the exact center of the bolt. And yet another handy tool is a 3/8" end mill. You can chuck this in your drill and make a nice flat surface on...

Still no improvement. I had hoped that the problem was just temporary. I've only been visiting this site since last November, so I didn't know what was normal. Pages on this site still take about 50 seconds to load vs. 2-3 seconds on other vBulletin sites. I don't understand why this site should...

Take a good look at your left rear taillight/turn signal/brake light socket and bulb. Make sure there is no short there between the taillight terminal and the turn signal/brake light terminal of the socket. Also look at your left front side marker light socket and bulb. Here's what I am...

The rear turn signals and brake lights are one and the same: the same filament in each rear bulb serves as both the turn signal and brake light. So I think you mean that the front driver side turn signal and indicator are lighting when you step on the brake. The turn signal switch also acts as a...

Right. But once the circuit is complete, the GP module will sense the voltage going to the glow plugs, and will cycle off if the voltage exceeds 12.5. So I can see that the glow plugs might see a higher than normal voltage momentarily. Is that enough to damage the glow plugs? Or perhaps it's the...

OK, I understand how the source voltage can be higher than 12.5 volts, but if the GP module is functioning correctly, would it not prevent the glow plugs from receiving the higher-than-normal voltage? Just today I replaced all 8 glow plugs which had gone to an open state. The truck was not...

I have literally spent hours reading previous threads on glow plugs, and I'm still puzzled about something. The document in antennaclimber's GP Module Theory of Operation sticky says this: Glow Plug Protection. If the voltage on the glow plug side of the relay exceeds approximately 12.5 volts...

The schematic shows the voltage monitor circuit (503A) connected to the resistor (input) side of the GPR. Is this incorrect?

Point taken. You're right; I could have posted in an existing thread.

How about a MANDATORY spell check before a new post? Sorry, couldn't resist. ;) I did think about the fact that there are already many threads on this subject, and I have looked at them all. The reason I started this new thread is because I didn't find the bolt part number, thread size, and...

I just replaced a broken starter bolt on a CUCV and thought it would be helpful to post the info here. The bolts are GM P/N 15544950 (this part number supplies one bolt). The size is M10X1.5 X approx. 111mm length. The strength grade is 9.8. I had the threaded portion of one bolt broken off in...

The more I looked at it, the more obvious it was that the leg had been cut off for some reason. I made an extension from a piece of scrap and welded it onto the leg. Now it's nice and solid.

I'm working on a customer's M1009 that needs some TLC. Both batteries are crammed onto the front tray, and have bungee cords for hold-downs. The unused rear tray was halfway bolted in place, but sideways!? I want to mount the batteries properly. When I set the rear tray in place on the inner...