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Prev Professional Automotive Repair Technical Discussions for April 17, 2011
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Open Help Requests for GM
Help Request Answers
1999 Cadillac DeVille 4.6L engine VIN: 1G6KD544XX
Vehicle was brought in for cooling system flush.Then customer said was losing coolant and overheating.Pressure test cooling system shows a leaking water pump and by-pass hose and a defective radiator cap.All replaced including t-stat.Road test @ 55mph shows co...
2001 Cadillac Seville SLS 4.6L No Start, MIL Lamp on VIN: 1G6KS54YX1
Sorry for typos and all im having to do this on my phone so sorry... Here we go... I think i have two problems here with this one. Got a call from another tranny shop i do a lot of work for and he told me he had this custoemr with a cadi that he didnít wanna ... Trouble codes: B1004 (U1255 b2734 b1009 u1016 u1040 u1000 u1064 b3832 b3833)
2004 GMC Sierra 2500 HD 6.6L Oil pressure gauge VIN: 1GTHK23274
Hello all. I got a problem with this oil pressure gauge not working. I got 5v ref.(gray wire) to oil pressure switch and .4v @ idle at connector C107, pin D6 (tan/wht signal wire)and up to 2.6v @ 2500 rpms, are this good values to determine a good oil pressur...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Regal GS 3.8L Stall VIN: 2G4WB55K51
I think most of you guys were right on with this one, I unhooked the MAF and it would keep running. I tried to tell the customer we should get a delco part for this but he said he's going to take it back to the shop that put the first sensor on it.
1993 Chevrolet Lumina Euro 3.1L Cuts out, Stall VIN: 2G1WN54T6P
I have a call out to the owner to bring his car back in. He has yet to respond so when he does I will update this summary with the fix. Thanks to all the responses. It was overwhelming.
1996 Chevrolet Corvette 5.7L No Start, Stall VIN: 1G1YY22P2T
Well... I thought I had found the problem, Thinking that the idle screw (there is an idle, or throtle plate) setting on this manifold, was closed too far. I didnt test drive it. my daughter took it too the store, and it wouldnt start. I got it home (back to th...
2001 Chevrolet Tracker LT 2.5L MIL Lamp on VIN: 2CNBJ73491
Thanks for all the replies. I will look at this tracker again and leave post later. I feel there is a broken wire because if the coils get voltage from same fuse IG it would not be running if fuse was bad. Thanks again everyone. Trouble codes: P0135 (o2 heater), P0141 (o2 heater), P0155 (o2 heater), P0135 (o2 heater).
2002 Chevrolet Silverado 2500 6.0L Spider gears
Thanks for the info guys, this is a 9.5, and my parts guy ordered for a 10.5. Got the correct stuff ordered and should be done with it in a few days.
2007 Chevrolet Malibu LT 3.5L alarm VIN: 1G1ZT58N37
Sorry to waste everyones time. Since it was only a horn problem, my brother decided to wait to fix.
2000 GMC Yukon Denali 5.7L fuel gauge fluctuates VIN: 1GKEK12R2Y
Thanks to everyone, I replaced the cap and rotor as suggested and that didn't work. then I did a fuel pressure test when it didn't start, and it was below the specs. So I replaced the fuel pump and the problem is solved, vehicle runs great. Thanks to everyo...
1998 Pontiac Grand Prix GTP 3.8L No Start VIN: 1G2WP1215W
Thank you all for your valuable input. The testing of this vehicle has taken so long due to the fact that it went a week inbetween without a fail. Many stated intermittant Cam sensors as a high probability and the customer opted to have it replaced. It was ...
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