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Prev Professional Automotive Repair Technical Discussions for February 28, 2005
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Open Help Requests for GM
Help Request Answers
1985 Chevrolet Cavalier 2.0L No Start, Cuts out VIN: 1G1JC69POF
morning all. i hope some one out there can help me. car was towed in for no-start. owner replaced: plugs, wires, coil, cap, rotor, module. no change. we checked for codes, none found. we have since triple checked timing, replaced module again, installed re-man...
1993 Chevrolet K1500 Cheyenne 5.7L limp mode VIN: 1GCEK14K6P
This one is still haunting me.What I have now is limp mode with codes 67,81,82 I think it will shift 2-3 but being a chrysler tranny tech not totally sure about this.I think all 3 solenoids are powered by the same wire? I replaced the vehicle side of the harne...
1995 Chevrolet Cavalier 2.2L No Start VIN: 3G1JC5248S
Greetings fellow techs.The customers original complaint was that the car would start and stall almost everytime you started it.After a few tries it would run o.k.When the car arrived this morning the customer said that it was now starting o.k. but the mil indi... Trouble codes: 19 (crank sensor fault)
1996 Chevrolet Beretta Z26 3.1L Mechanical VIN: 1G1LW15M2T
Hello everyone, After this car sits for maybe 3-4 hours all the lifters bleed off, the top of engine is loud and it has no power until the engine runs for about 10-15 minutes and the engine is quite and runs very smooth. I know the lifters being collasped is...
1997 Chevrolet K2500 Cheyenne 6.5L all shifts VIN: 1GCGK29F0V
After wires were repaired, vechilce still would not shift. Found out that new tires were put on (upgraded from P245 to P265) Replaced VSS buffer and had recalibrated because of this. Still will not shift. Most of the time it stays in low gear and cannot go ove...
1999 Chevrolet Cavalier 2.2L convertor VIN: 1G1JC5249X
Code P1870 keeps returning, although I haven't seen the TSS pid go over 100rpm when converter clutch is on. I have verified that the solenoid does work, the clutch apply valve doesn't stick and its bore doesn't appear worn (How much clearance is acceptable?). ...
2000 Chevrolet Silverado 1500 4.3L Misfire VIN: 1GCEK14W8Y
this truck will only miss at 2000 rpms. alittle more or less on rpms and the missfire will go away. it seems to only be cylinder # 1.
2001 Chevrolet Express 1500 LS 4.3L No Start VIN: 1GNFG15W41
vehicle was towed in for starts for one second and dies. After inspecting to verify problem, found that i was losing injector pulse. I am able to keep vehicle running with carb spray but i notice that security light is flashing when i keep it running with carb...
1998 GMC 7500 7.0L stays at idle VIN: 1GDM7H1M5W
sometimes when u put the throttle to the floor the engine stays at idle. if you hold it there sometimes you cand hear the throttle open and the engine will rev then. this is a propane delivery truck. and has been converted to run off propane. i dont think this...
1999 GMC Yukon Denali 5.7L Driveline VIN: 1GKEK13R4X
Hello fellow techs: This Yukon 4X4 was towed in. In 2 high there is no response in any gear selected. In 4 low no response unless you rev the engine over 3000 RPM. I was able to drive it in this way barely. Trans fluid is full and clean. No codes in trans comp...
1992 Saturn SL2 1.9L Surge, Stall VIN: 1G8ZJ5472N
This saturn suges slightly at cruise above 30mph and what we have noticed is that our short term fuel trims go down to 60s and 70s and then it would go open loop. Fuel presure is at spec we covered egr to eliminate that. when it came to us it had codes 42,45,a... Trouble codes: 48
1997 Saturn SW2 1.9L Hesitation, Cuts out, Stall VIN: 1G8ZK8275V
Hi guys, this car belongs to a friend, at throttle tip in and very light throttle applications it will stall or buck and keep running. It does this at approx. 1300 to 1500 rpm. Doesn't care what gear it is in, or road speed. TPS seems OK. MAP appears OK. EGR h... Trouble codes: P1599
1999 Saturn SL2 1.9L cruise control VIN: 1G8ZJ527XX
Hello,fellow techs. The cruise control system on this Saturn is completely inoperative. There is no intermittent operation at all. There are no codes in the pcm for the cruise control. It came to our shop for this concern after having had the transmission repl...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac DeVille 4.5L Hesitation, Cuts out VIN: 1G6CD5331L
I sure appreciate all the help everyone gave. Time is valuable & I certainly don't want to close this with out a fix but I will have to. I have been over this car with a fine tooth comb & I have been through the distributor, checked the power & ground cable (p...
1987 Chevrolet Corvette 5.7L Misfire VIN: 1G1YY2184H
I appologize for lack of information. We got many replies on this one. We narrowed it down to either injectors or internal engine problem. We decided to pull the valve cover 1st. No problems found with cam lobes or valve spings. Now onto the injectors. Well su...
1993 Chevrolet K1500 Cheyenne 5.7L 1-2 shift VIN: 1GCEK14K6P
well its in limp mode now the anchor end of the 2/4 band was dislodged.I am going to resubmit this truck because I believe it has other trans problems.thanks to all who replied just check the 2/4 band if you pull the pump
1993 Chevrolet Corvette 40th Anniversary Edition 5.7L Interior lights and keyless entry system VIN: 1G1YY23P5P
Hi Folks Sorry this close has taken so long. I had 4 replies to this problem and all were helpfull. I would like to thank those who responded personaly but my computor had a fit and blew out the hard drive and I have lost the e-mail address. It did turn out to...
1995 Chevrolet Lumina 3.1L head
Thank everyone very much for all of the very informative replies. The vehicle is fixed, the head gasket was blown on cylinder #1 the compression ring was split. I looked at the combustion chambers with a magnifying glass for cracks, none. I checked the surface...
1995 Chevrolet Lumina 3.1L no check engine lite VIN: 2G1WL52M2S
Thank,s for all the tips. I ended up putting a reman ecm in & having gm flash it. I also R&R the crank & cam sensors due to mileage 1st. theres usually a reasen these car.s are at the auction: thank for all the help!
2000 Chevrolet Astro 4.3L No Start VIN: 1GNEL19W8Y
Special thanks to Jeff [...] from Ontario. He got it right. While checking for spark at the spark plug I noticed the coil arcing all over the place. Changed coil and now all is well. Sometimes its a simple thing. Thanks again Trouble codes: P0338 (ckt int high freq).
2003 Chevrolet Tahoe LT 5.3L transmission VIN: 1GNEK13Z63
O.K. guys, From the replies I got I decided to bite the bullet and pull this bad boy out. Once I disassembled it I found 3-4 clutch pack was toast! Everyone that replied correctly told me there was no spring in the 2-3 shift valve. Justin from New York went in...
1999 GMC C1500 Sierra SL 5.0L alternator VIN: GZX6D20001
thanks for all replies 17 replies the fix is an oem alternator after 4 day the truck run great ... iant rock !
2001 GMC W4500 Forward W4S042 5.7L trans case VIN: 4KDC4B1R31
Sorry about the delay to post this fix. Two of the replies I had for this talked about a driveline too short or a binding spline. There was no problem in that area. One was pointing at the engine to trans dowels which were also good. And lastly, the flex plate...
1997 Oldsmobile Cutlass Supreme SL 3.1L anti-theft VIN: 1G3WH52M1V
Like I said in the up-date, I secured wiring at module, bracket, relay and the harness for about [...]. With it mounted in the car: taped, hit on dash, bracket & tried cold and hot tempatures it did not fail to work for me one time and it has been 5 days th...
1992 Pontiac Trans Sport 3.8L Starting VIN: 1GMDU0615N
THANK YOU ALL!!! It wasa problem with a ground wire at the module, red wire with black tracer. THANK YOU AGAIN!!! Elden
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