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Prev Professional Automotive Repair Technical Discussions for November 3, 2006
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Open Help Requests for GM
Help Request Answers
1986 Cadillac Fleetwood 5.0L Charging VIN: 1G5DW69YXG
Car came in with a dead batt. Charged batt and tested had 847 cca at 12.56 volts. Started it and performed a charging system test. Alternator had to charging output but diode ripel was normal. Replaced alternator and it did the same thing. I thought mabee I go...
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1996 Cadillac Seville SLS 4.6L No Start VIN: 1G6K552Y7T
came in as no start. replaced ignition lock cylinder assembly now it will crank but not fire. dash is saying service fuel system and i got code p0231 short in fuel wiring... tested what i could to no avail..anyone run into this?
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1994 Chevrolet K3500 6.5L MIL Lamp on VIN: 1GTHK33F8R
this is my own truck and had this problem for long time. seems to be worst cold, the ses lite comes on intermittently and get a code 36. didn't happen all summer but now that the temp is @ 2 C happens all day long. I have followed diag procedure as per all dat... Trouble codes: 36 (injector pulse width - long response time)
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1995 Chevrolet Camaro 3.8L Poor Idle Quality VIN: S4S2152003
Hey Guys, This camaro has a strange probelm that we have only duplicated once, and it happens to the customer 3 to4 times a week. When they start it for the first time in the morning, it runs real rough if they turn it off and re-start it, it is fine. We had ...
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1995 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7S
car will start and run and then stall after a few min. when veh. wants to run the fuel pump will activate and my noid light will flash bright. once car stalls the fuel pump will not activate upon key turned on. also the noid light will flash but light is dim. ...
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1995 Chevrolet Blazer 4.3L No Start
i have got a good one. this blazer came in for a no start. the battery was dead from where the customer tried to start it. after charging the battery for 6 hours the blazer started. no codes were found in it except for an egr code which was disconnected by som...
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1999 Chevrolet Malibu 2.4L Poor Idle Quality, Surge, Cuts out, Stall, Misfire, MIL Lamp on, CODE PO300 VIN: IGIND52T6X
ok here we go this car was running about the same as before as it is now the dtc was po300 random misfire i have a snap on modis so i looked at misfire data all cyclinders were misfireing current and had history misfire for all cyclinders 70k i asked cust for ... Trouble codes: P0300
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1999 Chevrolet Blazer 4.3L speedometer VIN: 1GNDT13W0X
Vehicle came in a couple weeks ago, customer complained of no shifting. Monitored datastream and checked for DTC's. No dtc's were present and datastream showed input rpm's and slippage rpm's to be equal while output rpm's read zero, but wheels were turning and...
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2000 Chevrolet Malibu 3.1L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G1ND52J5Y
this malibu intermitantly idles fast, and throughs a p0122. will not act up in the shop. i have shook the wires with my volt meter hooked up. did not lose voltage. using min max pushed the pedal and no dropped voltage. any help is appreciated. thankyou Trouble codes: P0122 (tp or app circuit voltage low)
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1988 GMC K3500 Sierra SLE 7.4L reverse VIN: 1GTGK34N8J
the trans has a harsh park to drive engagement and an even hadrer drive to reverse or n to r engagement. came in idling a little high so we followed gm tsb for proper setup. 700 +- 25 iac all the way in and unplugged, 750 in normal state in drive. still very h...
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2000 GMC Sierra 1500 SL 4.8L engine noise VIN: 2GTEK19U24
engine makes noise, ticking or even a belt noise removed belts but dosent change could be coming from tranny pump but not sure. sounds like noise is in middle of engine disabled 1 cylinder at a time but dosent change.. any ideas
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1989 Oldsmobile Cutlass Calais 2.5L Poor Idle Quality, HARD START VIN: 11G3NL54U7
Hello guys. I HAVE ANOTHER PROBLEM CHILD.LET ME START ON THE STARTING ISSUE. LET THE CAR SIT OOVERNITE IT WILL CRANK FOR LEAST A MINUTE BEFORE IT WILL FIRE UP. NOW I HAVE PUT MY SCOPE ON THE CRANK SIGNAL AND I SEE A FLAT LINE UNTIL IT FIRES THEN I GOT A NICE S...
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1992 Saturn SL2 1.9L water leak VIN: 1G8ZK5472N
Hi, This car is one I fixed up for my daughter to commute to college and the problem I have now is a lot of water on the front footwell area when it rains. I had sealed around the windshield on the right side and checked the door seals. I had used a hose to tr...
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal LS 3.8L Surge VIN: 2G4WB52KXX
Thanks Bruce from Ontario, you gave me the extra input I needed to follow a hunch. After testing converter, which was fine, I decided to replace the TPS even though it looked fine on a scope. Gm has a TSB out for an intermittent miss caused by a TPS on these c...
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1979 Chevrolet K30 Cheyenne 5.7L Suspension/Steering VIN: CKL349B108
I thank everyone for their input. We found the sway bar bushings to be worn away, left wheel bearing needed to be replaced & front springs needed to be replaced. The customer declined repairs, but I thank you all
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1995 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY22P4S
I end up installing new 02 sensor bank 2 and noticed cat inlet and outlet temperture was about 100 degree difference on bank 2 so i installed new cat on bank 2. Will see after month comes back with bank 2 then i failed but only time will tell.. Thanks to all Trouble codes: P0174.
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2000 Chevrolet S10 4.3L Cuts out VIN: 1GCCT19W1Y
Thank you all for the help and sorry for the long delay. I changed the cap and rotor, the crank and cam sensors and it seemed fine but then it happened again. I started keeping a volt meter in the car and sure enough ED, Kim and Randy hit the nail on the head....
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2001 Chevrolet Impala LS 3.8L Hesitation VIN: 2G1WH55K71
Sorry, no fix yet. Suspect valve body wear. Had an oscilloscope on TCC and pulse width signal OK to TCC. EPC pressures normal at varied speeds. 'patch' for now was to install an inline toggle switch on brake switch TCC cutoff wire so that customer just switche...
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2002 Chevrolet Impala 3.4L body computer VIN: 2G1WF55E92
thanks to all who said the bcm was the problem. was surprised how many said be sure to have bcm flashed when the dealer said it did not need to be programmed. car started with new bcm. radio did not unlock and air bag light stayed on. ended up taking to dealer...
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2004 Chevrolet Silverado 1500 4.3L Hesitation, Cuts out, Stall VIN: 1GCEC14X24
Thanks for all who replied it turned out to be the signal wire to the coil was broke in the case. Thank you all
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1996 GMC K1500 Suburban 5.7L Hesitation VIN: 3GKF16R6TG
I have had the customer driving this one for over a week now, with no complaints. We added a BG 44K before it left. I will assume that the problem was an intemittantly sticking injector. If we see it back for this again I will add comments to this post. Thanks...
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2000 GMC Jimmy Diamond Edition 4.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDT13WXY
Thanks for the replies. Paul from California and Laneard from Texas were on track with proublem. Paul, yes unplugging O2 makes a difference. With O2 unplugged PCM gets a reading of 460mv, as a back up I beleive. In fact that is how the cust is driving the truc... Trouble codes: P0171 (B1S1 lean), P0300 (multi missfire).
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1972 Oldsmobile cutlass 350CID oil pressure VIN: 3J57K2R175
Well ol Jed's a millionare! Got oil to the top by using a 3/8 impact gun and some nerves. I had got oil only to 3 lifters(on one side), reinstalled dist. and cranked engine by the starter and still didn't have oil at others. I took the dist. back out and spun ...
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1997 Pontiac Grand Prix GT 3.8L Unknown VIN: 1G2WP12K1V
thank you for the replies as many of you suggested I sold the customer a transmission replacement, replaced with a reman unit and customer is happy
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2000 Pontiac Grand Prix GT 3.8L Cuts out, Stall VIN: 1G2WP52KSY
We changed the ignition module, crank sensor and recalibrated the crank cam sensors. Fuel pump pressure was good and did not drop off when car quit. There were no codes in any of the computors. The car starts back up right after quitting. The replies we had we...
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