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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 3, 2014
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1995 Cadillac Fleetwood 5.7L Stall VIN: 1G6DW52P9S
vehicle came in for a coolant leak. replaced water pump. filled cooling system and prepared to start. vehicle sat in shop an extra day because my new water pump arrived as a reboxed core return with gook and gaskets still attached. attempted start but got the ...
1999 Chevrolet Silverado 2500 6.0L No Start VIN: 1GCGK29U1X
Truck was brought to me with engine out. Completely rebuilt the engine and installed it. Have good spark to all cylinders. 60-65 psi of fuel pressure. When being cranked, it fires a couple of times and that's all. Put noid lite on injectors and when you start ...
2001 GMC C7500 Topkick C7H042 8.1L Engine VIN: 1GDJ7H1E11
Truck is used for seasonal work (i.e. salt spreading) Truck ran fine all day, parked over night in heated shop. Two days later, went to move truck outside, discovered No-Start. I have checked all fuses and relays, all seem to be working fine. I am newer to the...
2007 GMC Yukon XL 1500 Denali 6.2L Misfire VIN: 1GKFK66837
#5 picks up above 750 rpm in gear or above 1000 rpm in neutral. A known good spark plug, plug wire, coil and injector have been tried. The valve springs have been removed and inspected. The valve guides are tight. The intake valve felt gummy when turned by han... Trouble codes: 305 (5 cylinder misfire)
1991 Oldsmobile 98 Regency Elite 3.8L Battery Draw VIN: 1G3CW53L2M
Hi: This car as towed to me. After charging battery - runs but idles a little rough. Dash lights are on all the time killing battery. Also has codes 31, park/neutral sw problem, and 41, cam sensor circuit. We installed a new cam sensor because it was cheap but...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet K3500 5.7L No Start, Hard start VIN: 1GBHK33R1V
Fixed for now..customer didn't want to spend any time on diagnosing the problem and requested that we replaced the fuel pump. Replaced pump, filter and relay again. Truck starts good now and havn't heard back from the customer in two weeks.Ill call this fixed ... Trouble codes: P0154 (B2/s1 no activity), P0131 (B1/s1 low voltage), P0140 (B1/s2 no activity), P0151 (B2/s1 low voltage).
1999 Chevrolet Tahoe LS 5.7L noise VIN: 1GNEK13R7X
I tried what most people were saying and pulled the belt off. the tech that was working on it said he had done that, guess he didn't. the noise went away. the I checked the alignment of the p/s pulley. it was about a 1/16 of an inch too far in. pulled it out a...
2003 Chevrolet Silverado 2500 HD 6.6L Allison Transmission VIN: 1GCHK29163
Well 2 replies said check filter/ install of filters. We purchased a ac delco internal and a spin on filter, refilled ran it and no more leaking from vent. Must have been a problem with customer installed filters. Thanks, Mike
2005 Chevrolet Tahoe LS 5.3L dash lights VIN: 1GNEC13TX5
Sorry it took me a little long to close this help request!it was done on friday after thanksgiving, I barrowed the shop scanner & hooked-up there was no codes in any module. What I did is; when the lights were "flickering" at the same time I heard a clicking n...
2007 GMC Sierra 3500 HD SLE 6.6L MIL Lamp on, reduced power VIN: 1GTJK33647
I apologize for the second undecided customer in a row on a IATN help request. They can't decide what to do. If they decide to fix it I will update this post. Thanks for the relies here's what I found. Again I haven't messed with diesel much since the 6.5 GM d... Trouble codes: P02E7.
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