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Prev Professional Automotive Repair Technical Discussions for December 4, 2009
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Open Help Requests for GM
Help Request Answers
1999 Buick Regal GS 3.8L No Start VIN: 2G4WF5214X
This car apparently died while it was driving down the road. It cranks fine but will not start. We have good spark, and good fuel pressure, but no injector pulse from PCM. When first attempting to start after the car has been sitting for a while, the injector...
2002 Buick Rendezvous CX 3.4L warning light VIN: 3G5DA03E12
I thought that after replacing the lights that the light would go off,is there a reset proceedure for this light? Thanks,
1986 Chevrolet Caprice 4.3L runs poorly VIN: 1G1BN69Z6G
Vehicle came in "died on the road". Towed in, started right up but ran poorly. Set timing and checked vacuum, steady @ 20. Test drive and it would only run well if I had the timing so advanced it pings terribly. Found out that customer shot a halon fire exting...
1993 Chevrolet K1500 WT 4.3L Hydraulic System VIN: 1GCEK14Z4P
The pedal feel and clutch actuation bleeds off over time and won't release the clutch. If you pump the pedal the pressure and feel comes back, for a little while. This truck initially came to me because the roll-pin that retains the fluid line into the master...
1994 Chevrolet G20 Chevy Van 5.7L Stall VIN: 1GCEG25K1R
Engine stalls with rapid application of throttle in neutral or with any throttle application with vehicle in gear. All ignition has been replaced including 2 new distributors. Fuel pump is new with 14 psi that remains constant when engine stalls. Vacuum is 18 ...
1999 Chevrolet Blazer LS 4.3L tcc module VIN: 1GNDT13WXX
This Blazer will not stay in 4wd above 10 mph. Above that speed it reverts to 2wd and sets the service 4wd light. It sets speed sensor code, but all three speed sensors show good. Have replaced front speed sensor and swapped the 2 in the back with the same res...
2000 Chevrolet K3500 7.4L Hesitation, Misfire, MIL Lamp on VIN: 1GCHK33J6Y
Gentleman, I have a difficult problem here. the truck misses and lacks power under heavy acceleration. On scanner it shows constant misfire on #3 cylinder, yet only code present is p0171. When I look at fuel trim it shows only 5% long term fuel trim on bank 1.... Trouble codes: P0171 (lean condition)
2000 Chevrolet Express 3500 5.7L Filling with fuel VIN: 1GCHG35RXY
This van came in after another repair shop put in a fuel pump cannot put fuel in without spilling out no codes set for a vent valve or canister removed filler neck did not see any kinks in tube if anybody has ever run into this please let me know thank you.
2001 Chevrolet Silverado 1500 5.3L wipers VIN: 2GCEK19TX1
wipers operate on high only--we replaced cover /circuit board due to high failure pattern. wipers then worked fine-for 5 minutes--now they are back to hi only--i subscrice to shop key , but diagnostic info is vague--any help would be great
2002 Chevrolet Suburban 1500 LS 5.3L Misfire VIN: 1GNFK16792
hello hope everyone ok. well we replace intake gaskets,spark plug wires, plugs,clean injectors, and still have random misfire, 2002 suburban 5.3 flex fuel. apreciate any help tnx. Trouble codes: 300 (random misfire)
2004 Chevrolet Silverado 2500 HD 6.0L monitor will not se, VIN: 1GCHK29U64
thanks to all in advance. This one has been giving me a hard time for 3 days. Vehical came in with po442 code and po455 code, smoked system three times and no leaks found.Changed gas cap and vent solenoid, still no monitor set and tighten gas cap will display ...
2006 Chevrolet Malibu LT 2.2L steering VIN: 1G1ZS51F46
when making hard turn , when returning whell back to center , hear a clunking sound. found nothing loose in the front suspension. feels like play in tie rods both sides (but there is really no ply in tie rods). also steering to the right is really hard and to ...
2006 GMC Sierra 2500 HD SLE 6.6L engine? VIN: 1GTHK23D26
Have a vibration in neutral or in gear at 1500-1900 rpm coming thru floorboard.Can feel very heavy at throttle and brake pedal. Seem to have gotten worse in the last 4k miles,started at 1600-1800 rpm and has since expanded 1500-2000rpm.Have removed belt and ra...
2003 Oldsmobile Alero GL 3.4L class 2 bus line VIN: IG3NL12E83
HI and thanks for all your help. This car came in on a hook as a no start no crank.No radio and the ipc runs key on bulb test but it does not cycle the gages or have a theft light when trying to start in crank mode. Battery good tested all fuses and found that...
1995 Pontiac Grand Am SE 2.3L Fuel Pump, Ignition Coils, Injectors, Console Indi VIN: 1G2NES5DXS
Car came to us with a no run situation, humming comming from the center of the engine. One relay clicking. Check engine flashing and gear position indicator light flashing. The check engine light, gear shift indicator light, relay all flash at the same time, r...
2000 Pontiac Grand Am GT 3.4L Misfire, MIL Lamp on VIN: 1G2NW12E9Y
Hello, thanks in advance! I starting working on this following alot of repairs. Random Misfire @ 2100-2600 RPMs, in any gear of the transmission. normally occurs at highway speeds. Won't misfire accept when driving not even when under a load in shop. This unit... Trouble codes: P0300
2004 Pontiac Grand Prix GTP 3.8L hard start VIN: 2G2W552234
This customer is complaining of hard start. It takes multiple attempts for the engine to start. We experienced three key cycles. The puzzling thing is when we first hooked up the fuel gouge the pressure was zero. Turn the key on but not start the pressure is 1... Trouble codes: P0128
2004 Saturn Vue 2.2L cruise control VIN: 5GZCZ33D84
The problem I'm haveing is I know that I have good power to the ecm but I don't no where to go to next. Shopkey has left me at a dead end. I believe there is a problem in the ecm causeing the cruise control to not work. The powers for the cruise control are go...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Regal Custom 3.8L MIL Lamp on VIN: 2G4WB52K3T
Perhaps I jumped the gun! I decided to borrow my jobber's illustrated parts guide (NAPA) and located the part in there. Part WAS NOT listed in application catolog for Echlin, Standard or Delco.Part number was good; will be here Monday. Thank You, Guys and have... Trouble codes: P0441.
1995 Chevrolet K1500 5.7L intake VIN: 1GCEK19K7S
believe it or not I think the odor was the brake cleaner i used to clean the sludge out of the engine.
1997 Chevrolet C-Series Kodiak C6H042 7.0L Poor Idle Quality, Surge, HARD START WARM VIN: 1GBJ7T1PVJ
Thank you all for the help! It was the wrong fuel pump, I assumed the cross reference was correct-wrong! when I tested pressure for the new pump it was very low. Once the correct pump was installed all was well. Thank You!
1990 Oldsmobile Cutlass Cruiser SL 3.3L Cuts out, Stall VIN: 1G3AM84N8L
Thanks again to everyones help!! I found 3 injectors that were way out of spec on resistance. I replaced all 3 and the olds never ran better!!! Thanks again!
1996 Pontiac Sunfire SE 2.2L Misfire, MIL Lamp on VIN: 1G2JB1247T
upon further inspection found leak between one and two.finaly got further info on customer had head gasket put on car in 2004 for same concern customer is unloading car n ow than k for everyones replies the where helpful Trouble codes: P0301 (missfire on one).
2001 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX54K61
turned out new aftermkt egr valve causing trouble! when commanded on worked but not opening enough , why this didn't set a pintle position code baffles me but none the less a new valve fixed the problem. Trouble codes: P0401.
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