GPCM RELAY?

[01Landyacht]

01 X wouldnt start this morning, good crank, good batteries, just woudlnt start. It was 20 deg. out this morning, ses lightn on - scanned it - throwing code PO684 GPCM implausible signal.

my question is , is there a relay for the GPCM ?


thanks in advance for any info...


also, im in El Paso , TX. if anyone knows of a good shop round here(for this sorta thing) please advise...

 

[Arisley]

Nope, the GPCM replaced the glow pug relay. GPCM = Glow Plug Control Module. There is probably a fuse for it.

Until you get it fixed, plug it in at night.

 

[SkySki Jason]

Unplug the harness(es) from the GPCM and inspect the pins on the harness-side. These can get messed up, usually from not being all the way plugged in and/or from getting wet. If any of the plastic looks melted around the pins - there is an Int'l part # for a 'repair kit' to replace the pigtails...

If pigtails look OK, ohm out the GP's thru the harness/pigtails right at the GPCM (this part is soooo much easier than the GP relay guys have it!) IIRC, anything under 2 ohms is a good GP.

If all the GP's are good, ya prolly need to replace the GPCM. I think I paid $130ish for my last one...

FWIW, I know my junk still starts OK down to about 40*F without GP's and to below freezing with only 1/2 of them working.

Here's a pic of a bad pigtail (blue) next to the 'repair' pigtail (pink):

 

[buschpoweredstroker]

Is the X originally from tx? Are you running a chip with custom tunes? I brought an O3 350 back from cali and it had the GPCM and not the relay. I needed special tunes to operate the GPCM even though my wts light came on because the glow plugs weren't actually working. Hope this helps

 

[01Landyacht]

gpcm relay

Thank yall for the replies. So i went out last night and messed with it a little, the plug on the gpcm was loose so i took it off and cleaned it up. Went out this morning and she started up just fine... i appreciate the help, pics and all helped out greatly. Thanks again