Switched to Mobil1 0w30 today

[Jay2TheRescue]

That this appears to be a transmission related issue, and it was a coincidence.

EDIT: I've changed my mind. I've learned to not change my oil!

-Jay

[theholycow]

Jay,

What transmission is in your truck? Here's the GM 4L60E technician guide, I just stumbled across it at camaro5.com:
http://www.theimportkiller.com/4l60e.pdf

[Jay2TheRescue]

I don't know. Its a 98 K1500 4wd with the Z71 and HD towing package. I'm not sure if its a 4L60E or a 4L80E. Is there a way to tell from the VIN number, or the equipment codes listed on the inside of the glovebox?

[theholycow]

Yes, there is. The RPO codes in your glovebox can be found online. There's loads of places to find them.

Code M30 is the 4L60E. Code MT1 is the 4L80E.

http://www.gm-trucks.com/home/RPO-Code-Lookup.html
http://lonestarthunder.com/m_rpo.php
http://www.c2e.info/rpocodes

Failing those, of course, there's http://www.google.com/search?q=rpo+decoder

[Jay2TheRescue]

Thanks. I looked on the internet the other day, but I couldn't find the codes. I'll look tomorrow morning.

-Jay

[Jay2TheRescue]

I'm showing M30 on the glovebox tag, so its a 4L60E.

-Jay

[Jay2TheRescue]

I liked that second link. (http://lonestarthunder.com/m_rpo.php) I entered all the codes, and it gave me a breakdown of all equipment...

RPO Decoder/Revealer
Results

AG9
ADJUSTER FRT ST POWER, 6 WAY

AJ1
WINDOW TINTED DEEP, ALL EXCEPT W/S AND DRS

AM7
SEAT RR FOLDING

AU0
LOCK CONTROL, ENTRY REMOTE ENTRY

AU3
LOCK CONTROL SIDE DR, ELEC

A20
WINDOW RR QTR, VENT SWING OUT

A31
WINDOW POWER OPERATED, ALL DOORS

A95
SEAT FRT BKT, HIGH BACK, DRIVER & PASS RECL

B32
COVERING FRT FLOOR MATS, AUX

B33
COVERING REAR FLOOR MATS, AUX

B85
MOLDING B/S EXTERIOR, BRIGHT

B96
MOLDING WHL OPENING

C60
HVAC SYSTEM AIR CONDITIONER FRT, MAN CONTROLS

DD7
MIRROR I/S R/V LT SENSITIVE, COMPASS

DK6
CONSOLE ROOF INTERIOR

D48
MIRROR O/S LH & RH, REMOTE CONTROL, ELECTRIC, COLOR.

D55
CONSOLE FRT COMPT, FLOOR

EVA
TEST DVT, EVAP EMISSION REQUIREMENT

E24
DOOR SIDE REAR, HINGED

E63
BODY EQUIPMENT FLEETSIDE PICK-UP BOX

FE9
CERTIFICATION EMISSION, FEDERAL

FK2
ARM LH TORS BAR SPRING ADJ (A)

FK3
ARM RH TORS BAR SPRING ADJ (B)

GT4
AXLE REAR 3.73 RATIO

G80
AXLE POSITRACTION LIMITED SLIP

JB5
BRAKE POWER, DISC/DRUM, 6,400 LBS

KNP
COOLING SYSTEM TRANS, HD

K34
CRUISE CONTROL AUTOMATIC, ELECTRONIC

K47
AIR CLEANER HIGH CAPACITY

K60
GENERATOR 100 AMP

L31
ENGINE GAS, 8 CYL, 5.7L, CPI

M30
TRANSMISSION AUTO 4 SPD, HMD, 4L60-E, ELECTRONIC

NA1
EMISSION SYSTEM GVW LESS THAN 8,500 LB

NF2
EMISSION SYSTEM FEDERAL, TIER 1

NP1
TRANSFER CASE ELECTRIC SHIFT CONT, TWO SPEED

NP5
STEERING WHEEL LEATHER WRAPPED

NRQ
EXHAUST CLOSE COUPLED

NZZ
SALES PACKAGE SKID PLATE, "OFF ROAD" SPOT

N33
STEERING COLUMN TILT TYPE

OSG
PLANT CODE OSHAWA, ONT, CANADA (TRK)

PF4
WHEEL

Q4B
GVW RATING 6,200 LBS

SLM
SALES PROCESSING STOCK ORDERS

TFE
SALES INCENTIVE COMMITMENT PLUS

UP0
RADIO AM/FM STEREO, SEEK/SCAN, AUTO REV MUSIC SEARCH CASS, CD, AUTO TONE, CLOCK, ETR

UQ3
SPEAKER SYSTEM PERFORMANCE ENHANCED AUDIO

VB3
BUMPER RR STEP, CHROME, IMPACT STRIP

VG3
BUMPER FRT IMPACT STRIP

VK3
LICENSE PLATE FRONT FRT MOUNTING PKG

VR4
TRAILER HITCH WEIGHT DISTRIBUTING PLATFORM

VXS
VEHICLE COMPLETE

V22
GRILLE RADIATOR, CHROME

V73
VEHICLE STATEMENT USA/CANADA

XGD
TIRE FRONT P265/75R16-114S WOL R/PE ST TL AT

YD3
AXLE (BASE EQUIP) FOR SCHEDULING GVW PLATE

YD6
SPRING RR, BASE EQUIPMENT

YE9
CONVENIENCE PKG COMFORT & DECOR LEVEL #3

YGD
TIRE REAR P265/75R16-114S WOL R/PE ST TL AT

ZGD
TIRE SPARE P265/75R16-114S WOL R/PE ST TL AT

ZQ3
SALES PACKAGE DRIVER CONVENIENCE II

ZY1
COLOR COMBINATION SOLID

Z71
CHASSIS PACKAGE "OFF ROAD"

Z82
TRAILER PROVISIONS SPECIAL EQUIPMENT, H.D.

Z88
MARKET BRAND GMC

1SG
PACKAGE OPTION 07

1SZ
DISCOUNT OPTION PACKAGE

11U
PRIMARY COLOR EXTERIOR, PEWTER MET (02)

13D
TRIM COMBINATION CLOTH, LT GRAY (D),(96)

13I
INTERIOR TRIM LT SMOKE GRAY (94)

6GG
COMPONENT FRT LH COMPUTER SEL SUSP (6GG)

7GG
COMPONENT FRT RH COMPUTER SEL SUSP (7GG)

[bowtieguy]

Jay,

ask this guy about your vibrating pedal/possible tranny issues...

www.magicmechanic.com

he is nationally recognized as THE consumer's advocate, plus he rebuilds transmissions.

[Jay2TheRescue]

We have a similar guy doing a local call in show - Pat Goss. He is a regular on the Motorweek TV show. Then again it would always be cool to call CarTalk, but alas, its not a 1986 Dodge Colt Vista Wagon...



-Jay

[Jay2TheRescue]

I just setup an xGauge to report transmission temp. Does anyone out there know what is "normal" and beyond what temp would one be "worried"?

-Jay